docs: 交付文档、维护指引与端到端回归

补齐 README、开发计划、维护交接与 E2E 用例，执行最终验收。

frontend/src/__tests__/App.spec.ts

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+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect } from 'vitest'
+import { mount } from '@vue/test-utils'
+import App from '../App.vue'
+import { createRouter, createWebHistory } from 'vue-router'
+
+// Create a mock router since App.vue uses RouterView
+const router = createRouter({
+  history: createWebHistory(),
+  routes: [
+    {
+      path: '/',
+      component: { template: '<div>Home</div>' }
+    }
+  ]
+})
+
+describe('App', () => {
+  it('renders properly', () => {
+    const wrapper = mount(App, {
+      global: {
+        plugins: [router]
+      }
+    })
+    expect(wrapper.exists()).toBe(true)
+  })
+
+  it('contains RouterView component', () => {
+    const wrapper = mount(App, {
+      global: {
+        plugins: [router]
+      }
+    })
+    expect(wrapper.findComponent({ name: 'RouterView' }).exists()).toBe(true)
+  })
+
+  it('contains Toaster component', () => {
+    const wrapper = mount(App, {
+      global: {
+        plugins: [router]
+      }
+    })
+    expect(wrapper.findComponent({ name: 'Toaster' }).exists()).toBe(true)
+  })
+})

frontend/src/__tests__/components/BaseModal.spec.ts

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+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect } from 'vitest'
+import { mount } from '@vue/test-utils'
+import BaseModal from '../../components/common/BaseModal.vue'
+
+/**
+ * jsdom reports offsetParent as null for everything, which the trap uses to
+ * skip hidden controls. Force it so the visibility filter behaves as it does
+ * in a browser.
+ */
+const withVisibleElements = () =>
+  Object.defineProperty(HTMLElement.prototype, 'offsetParent', {
+    configurable: true,
+    get() { return this.parentNode },
+  })
+
+const mountModal = (props: Record<string, unknown> = {}) => {
+  withVisibleElements()
+  return mount(BaseModal, {
+    props: { title: 'Send a template', ...props },
+    slots: {
+      default: '<input class="first" /><input class="middle" />',
+      actions: '<button class="last">Send</button>',
+    },
+    attachTo: document.body,
+  })
+}
+
+describe('BaseModal', () => {
+  it('names the dialog for assistive tech', () => {
+    const wrapper = mountModal()
+    const dialog = wrapper.find('[role="dialog"]')
+    expect(dialog.attributes('aria-modal')).toBe('true')
+    expect(dialog.attributes('aria-label')).toBe('Send a template')
+    wrapper.unmount()
+  })
+
+  it('closes on Escape and on a backdrop click, but not on a click inside', async () => {
+    const wrapper = mountModal()
+
+    await wrapper.find('[role="dialog"]').trigger('keydown', { key: 'Escape' })
+    expect(wrapper.emitted('close')).toHaveLength(1)
+
+    await wrapper.find('.bm-panel').trigger('click')
+    expect(wrapper.emitted('close')).toHaveLength(1)   // still 1 — inside doesn't close
+
+    await wrapper.find('[role="dialog"]').trigger('click')
+    expect(wrapper.emitted('close')).toHaveLength(2)
+    wrapper.unmount()
+  })
+
+  it('when not dismissible, only its own buttons close it', async () => {
+    const wrapper = mountModal({ dismissible: false })
+
+    await wrapper.find('[role="dialog"]').trigger('keydown', { key: 'Escape' })
+    await wrapper.find('[role="dialog"]').trigger('click')
+
+    expect(wrapper.emitted('close')).toBeUndefined()
+    expect(wrapper.find('.bm-close').exists()).toBe(false)
+    wrapper.unmount()
+  })
+
+  // Focus order is [close ×, .first, .middle, .last]: the header's close button
+  // is the first control in the DOM, which is what the wrap has to honour.
+  it('wraps Tab from the last control back to the first', async () => {
+    // aria-modal tells a screen reader the page behind is gone. Without the
+    // trap, tabbing past the last button lands in content the AT has been told
+    // does not exist.
+    const wrapper = mountModal()
+    ;(wrapper.find('.last').element as HTMLElement).focus()
+
+    await wrapper.find('[role="dialog"]').trigger('keydown', { key: 'Tab' })
+
+    expect(document.activeElement).toBe(wrapper.find('.bm-close').element)
+    wrapper.unmount()
+  })
+
+  it('wraps Shift+Tab from the first control to the last', async () => {
+    const wrapper = mountModal()
+    ;(wrapper.find('.bm-close').element as HTMLElement).focus()
+
+    await wrapper.find('[role="dialog"]').trigger('keydown', { key: 'Tab', shiftKey: true })
+
+    expect(document.activeElement).toBe(wrapper.find('.last').element)
+    wrapper.unmount()
+  })
+
+  it('wraps Shift+Tab from the container, where focus starts', async () => {
+    // The scrim is tabindex="-1" and takes focus on open, so it has to count as
+    // "before the first control" — otherwise the very first Shift+Tab escapes.
+    const wrapper = mountModal()
+
+    await wrapper.find('[role="dialog"]').trigger('keydown', { key: 'Tab', shiftKey: true })
+
+    expect(document.activeElement).toBe(wrapper.find('.last').element)
+    wrapper.unmount()
+  })
+
+  it('leaves Tab alone in the middle of the dialog', async () => {
+    const wrapper = mountModal()
+    const middle = wrapper.find('.middle').element as HTMLElement
+    middle.focus()
+
+    await wrapper.find('[role="dialog"]').trigger('keydown', { key: 'Tab' })
+
+    // Not intercepted — the browser's own order still applies.
+    expect(document.activeElement).toBe(middle)
+    wrapper.unmount()
+  })
+
+  it('gives focus back to whatever opened it', async () => {
+    withVisibleElements()
+    const trigger = document.createElement('button')
+    document.body.appendChild(trigger)
+    trigger.focus()
+
+    const wrapper = mount(BaseModal, {
+      props: { title: 'x' },
+      slots: { default: '<input />' },
+      attachTo: document.body,
+    })
+    expect(document.activeElement).not.toBe(trigger)
+
+    wrapper.unmount()
+    expect(document.activeElement).toBe(trigger)
+    trigger.remove()
+  })
+})

frontend/src/__tests__/components/UserForm.chatScope.spec.ts

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+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { mount, flushPromises } from '@vue/test-utils'
+import type { Role, User } from '@/types/user'
+
+const listRoles = vi.fn()
+
+vi.mock('@/services/roles', () => ({
+  listRoles: () => listRoles(),
+}))
+
+vi.mock('vue-sonner', () => ({
+  toast: { success: vi.fn(), error: vi.fn() },
+}))
+
+const UserForm = (await import('@/components/human-agent/UserForm.vue')).default
+
+const permission = (name: string) => ({ id: 1, name, description: name })
+
+const AGENT_ROLE = {
+  id: '10',
+  name: 'Agent',
+  permissions: [
+    'view_assigned_chats',
+    'manage_assigned_chats',
+    'view_unassigned_chats',
+    'view_people',
+  ].map(permission),
+} as unknown as Role
+
+const ASSIGNED_ONLY_ROLE = {
+  id: '11',
+  name: 'Assigned only',
+  permissions: ['view_assigned_chats', 'manage_assigned_chats'].map(permission),
+} as unknown as Role
+
+const OWNER_ROLE = {
+  id: '12',
+  name: 'Owner',
+  permissions: [permission('super_admin')],
+} as unknown as Role
+
+const mountForm = async (user?: User | null) => {
+  const wrapper = mount(UserForm, { props: { user } })
+  await flushPromises()
+  return wrapper
+}
+
+const scopeBoxes = (wrapper: ReturnType<typeof mount>) =>
+  wrapper.findAll('input[type="checkbox"]').slice(0, 2)
+
+describe('UserForm – chat scope toggles', () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    listRoles.mockResolvedValue([AGENT_ROLE, ASSIGNED_ONLY_ROLE, OWNER_ROLE])
+  })
+
+  it('reflects the selected role rather than a fixed default', async () => {
+    const wrapper = await mountForm()
+    await wrapper.find('#role').setValue('10')
+    await flushPromises()
+
+    const [aiChats, orgChats] = scopeBoxes(wrapper)
+    // The seeded Agent role grants the AI queue and nothing org-wide, which is
+    // the product default: ticked, and unticked.
+    expect((aiChats.element as HTMLInputElement).checked).toBe(true)
+    expect((orgChats.element as HTMLInputElement).checked).toBe(false)
+  })
+
+  it('unticks the AI queue for a role that does not grant it', async () => {
+    const wrapper = await mountForm()
+    await wrapper.find('#role').setValue('11')
+    await flushPromises()
+
+    expect((scopeBoxes(wrapper)[0].element as HTMLInputElement).checked).toBe(false)
+  })
+
+  it('submits the scope alongside the role', async () => {
+    const wrapper = await mountForm()
+    await wrapper.find('#role').setValue('10')
+    await flushPromises()
+    await scopeBoxes(wrapper)[1].setValue(true)
+
+    await wrapper.find('#fullName').setValue('New Agent')
+    await wrapper.find('#email').setValue('new@test.com')
+    await wrapper.find('#password').setValue('Str0ng!Passw0rd')
+    await wrapper.find('#password').trigger('input')
+    await wrapper.find('#confirmPassword').setValue('Str0ng!Passw0rd')
+    await wrapper.find('form').trigger('submit')
+
+    const [[payload]] = wrapper.emitted('submit') as [Record<string, unknown>][]
+    expect(payload).toMatchObject({
+      role_id: 10,
+      see_all_ai_chats: true,
+      see_all_org_chats: true,
+    })
+  })
+
+  it('unticks both for a role that grants nothing', async () => {
+    const EMPTY_ROLE = { id: '13', name: 'Empty', permissions: [] } as unknown as Role
+    listRoles.mockResolvedValue([AGENT_ROLE, EMPTY_ROLE])
+
+    const wrapper = await mountForm()
+    await wrapper.find('#role').setValue('10')
+    await flushPromises()
+    expect((scopeBoxes(wrapper)[0].element as HTMLInputElement).checked).toBe(true)
+
+    await wrapper.find('#role').setValue('13')
+    await flushPromises()
+
+    const [aiChats, orgChats] = scopeBoxes(wrapper)
+    expect((aiChats.element as HTMLInputElement).checked).toBe(false)
+    expect((orgChats.element as HTMLInputElement).checked).toBe(false)
+  })
+
+  it('hides the toggles for a super_admin role, where they grant nothing', async () => {
+    const wrapper = await mountForm()
+    await wrapper.find('#role').setValue('12')
+    await flushPromises()
+
+    // Only the "Active User" box is left.
+    expect(wrapper.findAll('input[type="checkbox"]')).toHaveLength(1)
+  })
+
+  it('opens an existing agent on the scope their role already grants', async () => {
+    const wrapper = await mountForm({
+      id: 'u1',
+      full_name: 'Existing',
+      email: 'existing@test.com',
+      role: ASSIGNED_ONLY_ROLE,
+    } as unknown as User)
+
+    const [aiChats, orgChats] = scopeBoxes(wrapper)
+    expect((aiChats.element as HTMLInputElement).checked).toBe(false)
+    expect((orgChats.element as HTMLInputElement).checked).toBe(false)
+  })
+})

frontend/src/__tests__/components/WhatsAppTemplateSelect.spec.ts

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+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { mount, flushPromises } from '@vue/test-utils'
+import type { WhatsAppTemplate } from '../../services/channels'
+
+const listWhatsAppTemplates = vi.fn()
+vi.mock('../../services/channels', () => ({
+  default: {
+    listWhatsAppTemplates: (...args: unknown[]) => listWhatsAppTemplates(...args),
+  },
+}))
+
+import WhatsAppTemplateSelect from '../../components/conversations/WhatsAppTemplateSelect.vue'
+
+/**
+ * The same template in three languages is three templates — Meta has no
+ * multilingual template, and the auth-template flow creates exactly this shape
+ * by design. These rows are what broke the picker: it treated them as one.
+ */
+const multilingual: WhatsAppTemplate[] = [
+  {
+    name: 'order_update', language: 'en_US', status: 'APPROVED', category: 'UTILITY',
+    components: [{ type: 'BODY', text: 'Hi {{1}}, your order shipped.' }],
+  },
+  {
+    name: 'order_update', language: 'es_ES', status: 'APPROVED', category: 'UTILITY',
+    components: [{ type: 'BODY', text: 'Hola {{1}}, tu pedido ha sido enviado.' }],
+  },
+  {
+    name: 'order_update', language: 'hi_IN', status: 'APPROVED', category: 'UTILITY',
+    components: [{ type: 'BODY', text: 'नमस्ते {{1}}, आपका ऑर्डर भेज दिया गया है।' }],
+  },
+]
+
+const mountSelect = async (templates: WhatsAppTemplate[], props = {}) => {
+  listWhatsAppTemplates.mockResolvedValue(templates)
+  const wrapper = mount(WhatsAppTemplateSelect, {
+    props: { accountId: 'acc-1', ...props },
+    global: { stubs: { 'font-awesome-icon': true } },
+  })
+  await flushPromises()
+  return wrapper
+}
+
+describe('WhatsAppTemplateSelect — same-named templates in different languages', () => {
+  beforeEach(() => vi.clearAllMocks())
+
+  it('lists every language as its own choice', async () => {
+    const wrapper = await mountSelect(multilingual)
+    expect(wrapper.findAll('.tps-option')).toHaveLength(3)
+  })
+
+  it('selects only the language clicked, not every row sharing the name', async () => {
+    const wrapper = await mountSelect(multilingual)
+    await wrapper.findAll('.tps-option')[1].trigger('click')
+
+    const pressed = wrapper.findAll('.tps-option')
+      .filter((option) => option.attributes('aria-pressed') === 'true')
+    expect(pressed).toHaveLength(1)
+  })
+
+  it('switches language when a same-named sibling is clicked', async () => {
+    // The bug: select() early-returned on a name match, so this click was a
+    // silent no-op and the send went out in the language already chosen.
+    const wrapper = await mountSelect(multilingual)
+
+    await wrapper.findAll('.tps-option')[0].trigger('click')
+    expect(wrapper.emitted('update:selection')?.at(-1)?.[0]).toMatchObject({
+      template: { language: 'en_US' },
+    })
+
+    await wrapper.findAll('.tps-option')[1].trigger('click')
+    expect(wrapper.emitted('update:selection')?.at(-1)?.[0]).toMatchObject({
+      template: { language: 'es_ES' },
+    })
+  })
+
+  it('keeps typed values when the SAME row is re-clicked', async () => {
+    // The behaviour the early return exists for — it must survive the fix.
+    const wrapper = await mountSelect(multilingual)
+    await wrapper.findAll('.tps-option')[0].trigger('click')
+    await wrapper.find('.tps-input').setValue('Priya')
+
+    await wrapper.findAll('.tps-option')[0].trigger('click')
+
+    expect((wrapper.find('.tps-input').element as HTMLInputElement).value).toBe('Priya')
+  })
+})
+
+describe('WhatsAppTemplateSelect — filtering and errors', () => {
+  beforeEach(() => vi.clearAllMocks())
+
+  it('offers only the categories asked for', async () => {
+    const mixed: WhatsAppTemplate[] = [
+      multilingual[0],
+      { name: 'promo', language: 'en_US', status: 'APPROVED', category: 'MARKETING',
+        components: [{ type: 'BODY', text: 'Sale!' }] },
+    ]
+    const wrapper = await mountSelect(mixed, { categories: ['UTILITY', 'AUTHENTICATION'] })
+    expect(wrapper.findAll('.tps-option')).toHaveLength(1)
+    expect(wrapper.text()).not.toContain('promo')
+  })
+
+  it('distinguishes a failed load from an empty list', async () => {
+    listWhatsAppTemplates.mockRejectedValue({ response: { data: { detail: 'Nope' } } })
+    const wrapper = mount(WhatsAppTemplateSelect, {
+      props: { accountId: 'acc-1' },
+      global: { stubs: { 'font-awesome-icon': true } },
+    })
+    await flushPromises()
+    expect(wrapper.text()).toContain('Nope')
+  })
+})

frontend/src/__tests__/components/common/GuidanceTextarea.spec.ts

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+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, expect, it } from 'vitest'
+import { mount } from '@vue/test-utils'
+import GuidanceTextarea from '@/components/common/GuidanceTextarea.vue'
+import { MAX_GUIDANCE_CHARS } from '@/utils/mcp'
+
+const EXAMPLE = 'Indices: app-logs-*.\nOrder id is fields.order_ref.'
+
+function mountIt(modelValue: string | null = '', example = EXAMPLE) {
+  return mount(GuidanceTextarea, {
+    props: { modelValue, label: 'How to query this source', hint: 'A hint.', example },
+    global: { stubs: { 'font-awesome-icon': true } },
+  })
+}
+
+describe('GuidanceTextarea', () => {
+  it('emits what the operator types', async () => {
+    const wrapper = mountIt()
+    await wrapper.find('textarea').setValue('app-logs-*')
+    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual(['app-logs-*'])
+  })
+
+  it('caps input at the limit the backend enforces', () => {
+    expect(mountIt().find('textarea').attributes('maxlength')).toBe(String(MAX_GUIDANCE_CHARS))
+  })
+
+  it('keeps the example hidden until asked for', async () => {
+    const wrapper = mountIt()
+    expect(wrapper.find('.guidance-example').exists()).toBe(false)
+
+    await wrapper.find('.example-toggle').trigger('click')
+    expect(wrapper.find('.example-text').text()).toContain('fields.order_ref')
+  })
+
+  it('offers the example as a starting point only while the field is empty', async () => {
+    const empty = mountIt('')
+    await empty.find('.example-toggle').trigger('click')
+    expect(empty.find('.example-use').exists()).toBe(true)
+
+    await empty.find('.example-use').trigger('click')
+    expect(empty.emitted('update:modelValue')?.[0]).toEqual([EXAMPLE])
+
+    // With real work in the box the button is gone, so it can never clobber it.
+    const written = mountIt('my own notes')
+    await written.find('.example-toggle').trigger('click')
+    expect(written.find('.example-use').exists()).toBe(false)
+  })
+
+  it('warns as the operator approaches the limit', async () => {
+    const under = mountIt('x'.repeat(10))
+    expect(under.find('.guidance-count').classes()).not.toContain('near')
+
+    const near = mountIt('x'.repeat(MAX_GUIDANCE_CHARS))
+    expect(near.find('.guidance-count').classes()).toContain('near')
+  })
+
+  it('hides the disclosure entirely when no example is supplied', () => {
+    expect(mountIt('', '').find('.example-toggle').exists()).toBe(false)
+  })
+
+  it('survives the null the API returns for an undocumented connector', async () => {
+    const wrapper = mountIt(null)
+    expect(wrapper.find('.guidance-count').text()).toContain('0 /')
+
+    // And still offers the example, since the field is effectively empty.
+    await wrapper.find('.example-toggle').trigger('click')
+    expect(wrapper.find('.example-use').exists()).toBe(true)
+  })
+
+  it('labels the textarea for screen readers', () => {
+    expect(mountIt().find('textarea').attributes('aria-label')).toBe('How to query this source')
+  })
+})

frontend/src/__tests__/components/notifications/EnablePushPrompt.spec.ts

@@ -0,0 +1,101 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
+import { mount } from '@vue/test-utils'
+import { nextTick } from 'vue'
+import EnablePushPrompt from '@/components/notifications/EnablePushPrompt.vue'
+
+// visible flips in onMounted — flush the resulting DOM update before asserting
+const mountPrompt = async () => {
+  const wrapper = mount(EnablePushPrompt)
+  await nextTick()
+  return wrapper
+}
+
+vi.mock('@/pwa/register', () => ({
+  isShopifyEmbedded: vi.fn(() => false),
+}))
+
+const setNotificationPermission = (permission: string | null) => {
+  if (permission === null) {
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    delete (window as any).Notification
+  } else {
+    vi.stubGlobal('Notification', { permission })
+  }
+}
+
+describe('EnablePushPrompt', () => {
+  beforeEach(() => {
+    localStorage.clear()
+    vi.stubGlobal('matchMedia', vi.fn(() => ({ matches: false })))
+  })
+
+  afterEach(() => {
+    vi.unstubAllGlobals()
+  })
+
+  it('shows the enable card when permission is default', async () => {
+    setNotificationPermission('default')
+    const wrapper = await mountPrompt()
+    expect(wrapper.find('.push-prompt').exists()).toBe(true)
+    expect(wrapper.text()).toContain('Enable notifications')
+  })
+
+  it('stays hidden when permission is already granted', async () => {
+    setNotificationPermission('granted')
+    const wrapper = await mountPrompt()
+    expect(wrapper.find('.push-prompt').exists()).toBe(false)
+  })
+
+  it('stays hidden when permission is denied', async () => {
+    setNotificationPermission('denied')
+    const wrapper = await mountPrompt()
+    expect(wrapper.find('.push-prompt').exists()).toBe(false)
+  })
+
+  it('stays hidden while snoozed', async () => {
+    setNotificationPermission('default')
+    localStorage.setItem('cm-push-prompt-snoozed-at', String(Date.now()))
+    const wrapper = await mountPrompt()
+    expect(wrapper.find('.push-prompt').exists()).toBe(false)
+  })
+
+  it('emits enable and hides on the primary button', async () => {
+    setNotificationPermission('default')
+    const wrapper = await mountPrompt()
+    await wrapper.find('.primary-btn').trigger('click')
+    expect(wrapper.emitted('enable')).toHaveLength(1)
+    expect(wrapper.find('.push-prompt').exists()).toBe(false)
+  })
+
+  it('snoozes on "Not now"', async () => {
+    setNotificationPermission('default')
+    const wrapper = await mountPrompt()
+    await wrapper.find('.secondary-btn').trigger('click')
+    expect(wrapper.find('.push-prompt').exists()).toBe(false)
+    expect(localStorage.getItem('cm-push-prompt-snoozed-at')).toBeTruthy()
+  })
+
+  it('shows install-first guidance on iOS Safari (not installed)', async () => {
+    setNotificationPermission(null)
+    vi.stubGlobal('navigator', { userAgent: 'iPhone Safari' })
+    const wrapper = await mountPrompt()
+    expect(wrapper.text()).toContain('Add ChatterMate to your Home Screen')
+    expect(wrapper.find('.primary-btn').exists()).toBe(false)
+  })
+})

frontend/src/__tests__/composables/useBreakpoint.spec.ts

@@ -0,0 +1,82 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+
+type Listener = (e: { matches: boolean }) => void
+
+const makeMatchMedia = (matching: Record<string, boolean>) => {
+  const listeners: Record<string, Listener[]> = {}
+  const mql = (query: string) => ({
+    matches: matching[query] ?? false,
+    media: query,
+    addEventListener: (_: string, cb: Listener) => {
+      ;(listeners[query] ||= []).push(cb)
+    },
+    removeEventListener: vi.fn(),
+  })
+  return {
+    matchMedia: vi.fn(mql),
+    fire: (query: string, matches: boolean) => {
+      matching[query] = matches
+      ;(listeners[query] || []).forEach((cb) => cb({ matches }))
+    },
+  }
+}
+
+describe('useBreakpoint', () => {
+  beforeEach(() => {
+    vi.resetModules()
+  })
+
+  it('reports mobile and tablet from matchMedia', async () => {
+    const mm = makeMatchMedia({
+      '(max-width: 768px)': true,
+      '(max-width: 1024px)': true,
+    })
+    vi.stubGlobal('matchMedia', mm.matchMedia)
+
+    const { useBreakpoint } = await import('@/composables/useBreakpoint')
+    const { isMobile, isTablet } = useBreakpoint()
+    expect(isMobile.value).toBe(true)
+    expect(isTablet.value).toBe(true)
+  })
+
+  it('reacts to breakpoint changes', async () => {
+    const mm = makeMatchMedia({
+      '(max-width: 768px)': false,
+      '(max-width: 1024px)': false,
+    })
+    vi.stubGlobal('matchMedia', mm.matchMedia)
+
+    const { useBreakpoint } = await import('@/composables/useBreakpoint')
+    const { isMobile, isTablet } = useBreakpoint()
+    expect(isMobile.value).toBe(false)
+
+    mm.fire('(max-width: 768px)', true)
+    mm.fire('(max-width: 1024px)', true)
+    expect(isMobile.value).toBe(true)
+    expect(isTablet.value).toBe(true)
+  })
+
+  it('defaults to desktop when matchMedia is unavailable', async () => {
+    vi.stubGlobal('matchMedia', undefined)
+    const { useBreakpoint } = await import('@/composables/useBreakpoint')
+    const { isMobile, isTablet } = useBreakpoint()
+    expect(isMobile.value).toBe(false)
+    expect(isTablet.value).toBe(false)
+  })
+})

frontend/src/__tests__/composables/useConversationToken.spec.ts

@@ -0,0 +1,180 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { useConversationToken } from '@/composables/useConversationToken'
+
+/**
+ * The widget's conversation token has to outlive the page it loads on. A visitor who
+ * leaves the tab open past the token's TTL used to come back as a brand-new anonymous
+ * customer; here the token is rotated before it lapses, and a token that is already
+ * gone is handed to the host page rather than replaced behind the visitor's back.
+ */
+describe('useConversationToken', () => {
+  const WIDGET_ID = 'w-1'
+
+  /** A conversation token whose lifetime is `ttl`, `age` seconds old. */
+  function makeToken(ttl: number, age = 0, extra: Record<string, unknown> = {}) {
+    const now = Math.floor(Date.now() / 1000)
+    const claims = { sub: 'cust-1', iat: now - age, exp: now - age + ttl, ...extra }
+    return `header.${btoa(JSON.stringify(claims))}.signature`
+  }
+
+  let fetchMock: ReturnType<typeof vi.fn>
+
+  beforeEach(() => {
+    localStorage.clear()
+    fetchMock = vi.fn()
+    vi.stubGlobal('fetch', fetchMock)
+  })
+
+  afterEach(() => {
+    vi.unstubAllGlobals()
+    vi.useRealTimers()
+  })
+
+  function rotatedResponse(token: string) {
+    return { ok: true, status: 200, json: () => Promise.resolve({ data: { token } }) }
+  }
+
+  it('adopts the token the backend rendered into the frame', () => {
+    const initial = makeToken(3600)
+    const { token, start, stop } = useConversationToken()
+
+    start(WIDGET_ID, initial)
+
+    expect(token.value).toBe(initial)
+    expect(localStorage.getItem('ctid')).toBe(initial)
+    stop()
+  })
+
+  it('falls back to the stored token, and ignores stringified nothings', () => {
+    const stored = makeToken(3600)
+    localStorage.setItem('ctid', stored)
+    const { token, start, stop } = useConversationToken()
+
+    start(WIDGET_ID, 'undefined')
+
+    expect(token.value).toBe(stored)
+    stop()
+  })
+
+  it('leaves a token with plenty of life alone', async () => {
+    const { start, ensureFresh, stop } = useConversationToken()
+    start(WIDGET_ID, makeToken(3600))
+
+    await ensureFresh(WIDGET_ID)
+
+    expect(fetchMock).not.toHaveBeenCalled()
+    stop()
+  })
+
+  it('rotates a token that is near the end of its life', async () => {
+    const rotated = makeToken(3600)
+    fetchMock.mockResolvedValue(rotatedResponse(rotated))
+    const onTokenChanged = vi.fn()
+    const { token, start, ensureFresh, stop } = useConversationToken({ onTokenChanged })
+    // 55 minutes into a one-hour token: past the refresh point.
+    start(WIDGET_ID, makeToken(3600, 3300))
+
+    await ensureFresh(WIDGET_ID)
+
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+    expect(fetchMock.mock.calls[0][0]).toContain('/refresh-token')
+    expect(token.value).toBe(rotated)
+    // The host page stores the token too, so a later reload keeps the identity.
+    expect(onTokenChanged).toHaveBeenCalledWith(rotated)
+    expect(localStorage.getItem('ctid')).toBe(rotated)
+    stop()
+  })
+
+  it('tells the host page when the identity is past rotating', async () => {
+    fetchMock.mockResolvedValue({ ok: false, status: 401, json: () => Promise.resolve({}) })
+    const onIdentityExpired = vi.fn()
+    const { token, start, ensureFresh, stop } = useConversationToken({ onIdentityExpired })
+    const expiring = makeToken(3600, 3599)
+    start(WIDGET_ID, expiring)
+
+    const ok = await ensureFresh(WIDGET_ID)
+
+    expect(ok).toBe(false)
+    expect(onIdentityExpired).toHaveBeenCalledTimes(1)
+    // The dead token is kept rather than swapped: only the host can replace it.
+    expect(token.value).toBe(expiring)
+    stop()
+  })
+
+  it('keeps the current token when the network is down', async () => {
+    fetchMock.mockRejectedValue(new Error('offline'))
+    const current = makeToken(3600, 3599)
+    const { token, start, ensureFresh, stop } = useConversationToken()
+    start(WIDGET_ID, current)
+
+    expect(await ensureFresh(WIDGET_ID)).toBe(false)
+    expect(token.value).toBe(current)
+    stop()
+  })
+
+  it('rotates once when several callers ask at the same time', async () => {
+    const rotated = makeToken(3600)
+    fetchMock.mockResolvedValue(rotatedResponse(rotated))
+    const { start, ensureFresh, stop } = useConversationToken()
+    start(WIDGET_ID, makeToken(3600, 3500))
+
+    await Promise.all([ensureFresh(WIDGET_ID), ensureFresh(WIDGET_ID), ensureFresh(WIDGET_ID)])
+
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+    stop()
+  })
+
+  it('does nothing without a token', async () => {
+    const { start, ensureFresh, stop } = useConversationToken()
+    start(WIDGET_ID, null)
+
+    expect(await ensureFresh(WIDGET_ID)).toBe(false)
+    expect(fetchMock).not.toHaveBeenCalled()
+    stop()
+  })
+
+  it('schedules a rotation before the token expires', async () => {
+    vi.useFakeTimers()
+    const rotated = makeToken(3600)
+    fetchMock.mockResolvedValue(rotatedResponse(rotated))
+    const { token, start, stop } = useConversationToken()
+    start(WIDGET_ID, makeToken(600))
+
+    // 80% of a ten-minute token: the visitor never has to touch anything. The clock
+    // moves with the timers, or the tick would find the token nowhere near expiry.
+    vi.setSystemTime(Date.now() + 8 * 60 * 1000)
+    await vi.advanceTimersByTimeAsync(8 * 60 * 1000 + 100)
+
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+    expect(token.value).toBe(rotated)
+    stop()
+  })
+
+  it('stops the rotation timer when the widget goes away', async () => {
+    vi.useFakeTimers()
+    fetchMock.mockResolvedValue(rotatedResponse(makeToken(3600)))
+    const { start, stop } = useConversationToken()
+    start(WIDGET_ID, makeToken(600))
+
+    stop()
+    await vi.advanceTimersByTimeAsync(60 * 60 * 1000)
+
+    expect(fetchMock).not.toHaveBeenCalled()
+  })
+})

frontend/src/__tests__/composables/useCrawlCheck.spec.ts

@@ -0,0 +1,62 @@
+import { describe, it, expect, vi } from 'vitest'
+import { ref } from 'vue'
+import type { QueueItem } from '@/types/knowledge'
+import { useCrawlCheck } from '@/composables/useCrawlCheck'
+
+const item = (source: string, status: QueueItem['status'], id = 1): QueueItem =>
+  ({ id, source, source_type: 'website', status, created_at: '' }) as QueueItem
+
+const setup = (queueAfterFetch: QueueItem[], fetchFails = false) => {
+  const queue = ref<QueueItem[]>([])
+  const fetch = vi.fn(async () => {
+    if (fetchFails) throw new Error('network down')
+    queue.value = queueAfterFetch
+  })
+  return { fetch, ...useCrawlCheck(fetch, queue) }
+}
+
+describe('useCrawlCheck', () => {
+  it('reports a source that already failed (a domain refused on add)', async () => {
+    const { firstFailure } = setup([item('https://x.com', 'failed')])
+    expect((await firstFailure(['https://x.com']))?.status).toBe('failed')
+  })
+
+  it.each(['pending', 'processing'] as const)('does not wait for a %s crawl', async (status) => {
+    const { firstFailure, fetch } = setup([item('https://x.com', status)])
+    expect(await firstFailure(['https://x.com'])).toBeNull()
+    expect(fetch).toHaveBeenCalledTimes(1) // one look, no polling
+  })
+
+  it('a source that already finished is not a failure', async () => {
+    const { firstFailure } = setup([]) // completed items drop off the list
+    expect(await firstFailure(['https://x.com'])).toBeNull()
+  })
+
+  it('judges a retry by its newest row, not an older failure', async () => {
+    const { firstFailure } = setup([item('https://x.com', 'pending', 2), item('https://x.com', 'failed', 1)])
+    expect(await firstFailure(['https://x.com'])).toBeNull()
+  })
+
+  it('matches a source however its slash and case were typed', async () => {
+    const { firstFailure } = setup([item('https://X.com/', 'failed')])
+    expect(await firstFailure(['https://x.com'])).not.toBeNull()
+  })
+
+  it('ignores failures of sources it was not asked about', async () => {
+    const { firstFailure } = setup([item('https://other.com', 'failed')])
+    expect(await firstFailure(['https://x.com'])).toBeNull()
+  })
+
+  it('a cancelled check reports nothing', async () => {
+    const { firstFailure, cancel } = setup([item('https://x.com', 'failed')])
+    const result = firstFailure(['https://x.com'])
+    cancel()
+    expect(await result).toBeNull()
+  })
+
+  it('a failed queue fetch lets the wizard move on instead of getting stuck', async () => {
+    const { firstFailure } = setup([], true)
+    vi.spyOn(console, 'error').mockImplementation(() => {})
+    expect(await firstFailure(['https://x.com'])).toBeNull()
+  })
+})

frontend/src/__tests__/composables/useCurrency.spec.ts

@@ -0,0 +1,43 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect } from 'vitest'
+import { useCurrency } from '@/composables/useCurrency'
+
+const { formatCurrency } = useCurrency()
+
+describe('formatCurrency', () => {
+    it.each([
+        ['600.0', 'USD', '$600.00'],
+        [600, 'USD', '$600.00'],
+        [699.95, 'USD', '$699.95'],
+        ['1299.5', 'USD', '$1,299.50'],
+        [0, 'USD', '$0.00'],
+        [600, 'JPY', '¥600'],
+        ['49.9', 'EUR', '€49.90'],
+        [12.5, undefined, '12.50'],
+        [12.5, 'XYZ', 'XYZ12.50'],
+    ])('%o in %s shows %s', (price, currency, expected) => {
+        expect(formatCurrency(price as string | number, currency)).toBe(expected)
+    })
+
+    it('leaves empty and non-numeric prices alone', () => {
+        expect(formatCurrency(null, 'USD')).toBe('')
+        expect(formatCurrency(undefined, 'USD')).toBe('')
+        expect(formatCurrency('', 'USD')).toBe('')
+        expect(formatCurrency('Free', 'USD')).toBe('$Free')
+    })
+})

frontend/src/__tests__/composables/useFaqWorkspace.category.spec.ts

@@ -0,0 +1,95 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { useFaqWorkspace } from '@/composables/useFaqWorkspace'
+import { faqService } from '@/services/faq'
+import type { FaqItem } from '@/types/faq'
+
+vi.mock('@/services/faq', () => ({
+  faqService: {
+    createFaq: vi.fn(),
+    updateFaq: vi.fn(),
+  },
+}))
+vi.mock('@/services/knowledge', () => ({ knowledgeService: {} }))
+vi.mock('vue-sonner', () => ({ toast: { error: vi.fn(), success: vi.fn(), info: vi.fn() } }))
+
+const existingFaq: FaqItem = {
+  id: 'f1',
+  question: 'Q?',
+  answer: 'A.',
+  category: 'Billing',
+  status: 'draft',
+  knowledge_id: null,
+  source_label: null,
+}
+
+describe('useFaqWorkspace topic (category) handling', () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    vi.mocked(faqService.createFaq).mockResolvedValue({ ...existingFaq, id: 'new1' })
+    vi.mocked(faqService.updateFaq).mockResolvedValue({ ...existingFaq })
+  })
+
+  it('creates with the typed topic', async () => {
+    const ws = useFaqWorkspace(() => 'org1')
+    ws.startAdd()
+    ws.draftQuestion.value = 'How do refunds work?'
+    ws.draftAnswer.value = 'Like this.'
+    ws.draftCategory.value = ' Refunds '
+    await ws.saveEdit()
+
+    expect(faqService.createFaq).toHaveBeenCalledWith(
+      expect.objectContaining({ category: 'Refunds' }),
+    )
+  })
+
+  it('creates without a category when the topic is blank (server default applies)', async () => {
+    const ws = useFaqWorkspace(() => 'org1')
+    ws.startAdd()
+    ws.draftQuestion.value = 'Q'
+    ws.draftAnswer.value = 'A'
+    await ws.saveEdit()
+
+    const payload = vi.mocked(faqService.createFaq).mock.calls[0][0]
+    expect(payload).not.toHaveProperty('category')
+  })
+
+  it('pre-fills the current topic on edit and sends a changed one', async () => {
+    const ws = useFaqWorkspace(() => 'org1')
+    ws.startEdit(existingFaq)
+    expect(ws.draftCategory.value).toBe('Billing')
+
+    ws.draftCategory.value = 'Payments'
+    await ws.saveEdit()
+
+    expect(faqService.updateFaq).toHaveBeenCalledWith(
+      'f1',
+      expect.objectContaining({ category: 'Payments' }),
+    )
+  })
+
+  it('omits the category on edit when cleared, keeping the current topic', async () => {
+    const ws = useFaqWorkspace(() => 'org1')
+    ws.startEdit(existingFaq)
+    ws.draftCategory.value = ''
+    await ws.saveEdit()
+
+    const payload = vi.mocked(faqService.updateFaq).mock.calls[0][1]
+    expect(payload).not.toHaveProperty('category')
+  })
+})

frontend/src/__tests__/composables/useMCPTools.spec.ts

@@ -0,0 +1,125 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { useMCPTools } from '@/composables/useMCPTools'
+import { mcpService } from '@/services/mcp'
+
+vi.mock('@/services/mcp', () => ({
+  mcpService: {
+    testMCPTool: vi.fn(),
+  },
+}))
+vi.mock('vue-sonner', () => ({ toast: { error: vi.fn(), success: vi.fn() } }))
+
+describe('useMCPTools connection test', () => {
+  beforeEach(() => {
+    vi.mocked(mcpService.testMCPTool).mockReset()
+  })
+
+  it('stores the probe result per tool id', async () => {
+    vi.mocked(mcpService.testMCPTool).mockResolvedValue({
+      success: true,
+      functions: ['search', 'get_index'],
+      error: null,
+    })
+    const { testMCPTool, testResults, testingToolId } = useMCPTools('agent1')
+
+    await testMCPTool(7)
+
+    expect(testResults.value[7]).toEqual({
+      success: true,
+      functions: ['search', 'get_index'],
+      error: null,
+    })
+    expect(testingToolId.value).toBeNull()
+  })
+
+  it('turns a request failure into a failed result for the tool', async () => {
+    vi.mocked(mcpService.testMCPTool).mockRejectedValue({
+      response: { data: { detail: 'MCP tool not found' } },
+    })
+    const { testMCPTool, testResults, testingToolId } = useMCPTools('agent1')
+
+    await testMCPTool(9)
+
+    expect(testResults.value[9]).toEqual({
+      success: false,
+      functions: [],
+      error: 'MCP tool not found',
+    })
+    expect(testingToolId.value).toBeNull()
+  })
+
+  it('marks the tool as testing while the probe runs', async () => {
+    let resolveProbe: (v: any) => void = () => {}
+    vi.mocked(mcpService.testMCPTool).mockReturnValue(
+      new Promise((resolve) => {
+        resolveProbe = resolve
+      }),
+    )
+    const { testMCPTool, testingToolId } = useMCPTools('agent1')
+
+    const probe = testMCPTool(3)
+    expect(testingToolId.value).toBe(3)
+    resolveProbe({ success: true, functions: [], error: null })
+    await probe
+    expect(testingToolId.value).toBeNull()
+  })
+})
+
+describe('useMCPTools guidance', () => {
+  it('carries guidance through the create form and clears it on reset', () => {
+    const { createForm, resetCreateForm, applyPreset, mcpPresets } = useMCPTools('agent-1')
+
+    createForm.usage_guidance = 'Order id is fields.order_ref.'
+    resetCreateForm()
+    expect(createForm.usage_guidance).toBe('')
+
+    // A preset's own description must never become prompt text.
+    applyPreset(mcpPresets[0])
+    expect(createForm.usage_guidance).toBe('')
+    expect(createForm.description).toBe(mcpPresets[0].description)
+  })
+
+  it('loads a connector\'s stored guidance when editing it', () => {
+    const { createForm, startEdit } = useMCPTools('agent-1')
+
+    startEdit({
+      id: 3,
+      name: 'Elastic',
+      transport_type: 'http',
+      enabled: true,
+      usage_guidance: 'Indices: app-logs-*.',
+      organization_id: 'o',
+      created_at: '',
+      updated_at: '',
+    } as any)
+
+    expect(createForm.usage_guidance).toBe('Indices: app-logs-*.')
+  })
+
+  it('turns a null guidance from the API into an empty field', () => {
+    const { createForm, startEdit } = useMCPTools('agent-1')
+
+    startEdit({
+      id: 4, name: 'Bare', transport_type: 'http', enabled: true,
+      usage_guidance: null, organization_id: 'o', created_at: '', updated_at: '',
+    } as any)
+
+    expect(createForm.usage_guidance).toBe('')
+  })
+})

frontend/src/__tests__/composables/useNotificationSettings.spec.ts

@@ -0,0 +1,73 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { useNotificationSettings } from '@/composables/useNotificationSettings'
+import { notificationService } from '@/services/notification'
+
+vi.mock('@/services/notification', () => ({
+  notificationService: {
+    getSettings: vi.fn(),
+    updateSettings: vi.fn(),
+  },
+}))
+
+vi.mock('vue-sonner', () => ({ toast: { error: vi.fn(), success: vi.fn() } }))
+
+const defaults = {
+  notify_new_chat: false,
+  notify_chat_transfer: true,
+  notify_chat_assigned: true,
+}
+
+describe('useNotificationSettings', () => {
+  beforeEach(() => {
+    vi.mocked(notificationService.getSettings).mockResolvedValue({ ...defaults })
+    vi.mocked(notificationService.updateSettings).mockReset()
+  })
+
+  it('loads the current preferences', async () => {
+    const { settings, isLoading, load } = useNotificationSettings()
+    await load()
+
+    expect(isLoading.value).toBe(false)
+    expect(settings.value).toEqual(defaults)
+  })
+
+  it('applies a toggle optimistically and keeps the server response', async () => {
+    vi.mocked(notificationService.updateSettings).mockResolvedValue({
+      ...defaults,
+      notify_new_chat: true,
+    })
+
+    const { settings, load, save } = useNotificationSettings()
+    await load()
+    await save({ notify_new_chat: true })
+
+    expect(notificationService.updateSettings).toHaveBeenCalledWith({ notify_new_chat: true })
+    expect(settings.value?.notify_new_chat).toBe(true)
+  })
+
+  it('rolls the toggle back when the save fails', async () => {
+    vi.mocked(notificationService.updateSettings).mockRejectedValue(new Error('nope'))
+
+    const { settings, load, save } = useNotificationSettings()
+    await load()
+    await save({ notify_chat_transfer: false })
+
+    expect(settings.value).toEqual(defaults)
+  })
+})

frontend/src/__tests__/composables/useOrgInboxRoom.spec.ts

@@ -0,0 +1,61 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import { defineComponent, h } from 'vue'
+import { mount } from '@vue/test-utils'
+
+const socket = vi.hoisted(() => ({
+  emit: vi.fn(),
+  onReconnect: vi.fn(),
+  offReconnect: vi.fn(),
+}))
+const user = vi.hoisted(() => ({ current: null as any }))
+
+vi.mock('@/services/socket', () => ({ socketService: socket }))
+vi.mock('@/services/user', () => ({ userService: { getCurrentUser: () => user.current } }))
+
+import { useOrgInboxRoom } from '@/composables/useOrgInboxRoom'
+
+const withPermissions = (...names: string[]) => ({
+  organization_id: 'org-1',
+  role: { permissions: names.map((name) => ({ name })) }
+})
+
+const mountRoom = () =>
+  mount(defineComponent({ setup: () => { useOrgInboxRoom(); return () => h('div') } }))
+
+describe('useOrgInboxRoom', () => {
+  beforeEach(() => vi.clearAllMocks())
+
+  it('joins the org room, rejoins on reconnect, leaves on unmount', () => {
+    user.current = withPermissions('view_unassigned_chats')
+    const wrapper = mountRoom()
+
+    expect(socket.emit).toHaveBeenCalledWith('join_room', { session_id: 'org_inbox_org-1' })
+    expect(socket.onReconnect).toHaveBeenCalledOnce()
+
+    wrapper.unmount()
+    expect(socket.emit).toHaveBeenCalledWith('leave_room', { session_id: 'org_inbox_org-1' })
+    expect(socket.offReconnect).toHaveBeenCalledOnce()
+  })
+
+  it('stays out when the user cannot see chats nobody owns', () => {
+    user.current = withPermissions('view_assigned_chats')
+    mountRoom().unmount()
+    expect(socket.emit).not.toHaveBeenCalled()
+  })
+})

frontend/src/__tests__/composables/useWidgetCustomization.spec.ts

@@ -0,0 +1,53 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi, afterEach } from 'vitest'
+
+vi.mock('webfontloader', () => ({ default: { load: vi.fn() } }))
+
+import { useWidgetCustomization } from '@/composables/useWidgetCustomization'
+
+describe('useWidgetCustomization', () => {
+    afterEach(() => {
+        vi.restoreAllMocks()
+    })
+
+    it('forwards widget_display to the parent in CUSTOMIZATION_UPDATE', () => {
+        const postMessage = vi.spyOn(window.parent, 'postMessage').mockImplementation(() => {})
+        const { applyCustomization } = useWidgetCustomization()
+
+        applyCustomization({
+            chat_bubble_color: '#123456',
+            customization_metadata: { widget_display: { mode: 'sidebar-left', width: 420 } },
+        } as any)
+
+        const message = postMessage.mock.calls.at(-1)![0] as any
+        expect(message.type).toBe('CUSTOMIZATION_UPDATE')
+        expect(message.data.chat_bubble_color).toBe('#123456')
+        expect(message.data.widget_display).toEqual({ mode: 'sidebar-left', width: 420 })
+    })
+
+    it('sends no widget_display when the metadata has none', () => {
+        const postMessage = vi.spyOn(window.parent, 'postMessage').mockImplementation(() => {})
+        const { applyCustomization } = useWidgetCustomization()
+
+        applyCustomization({ customization_metadata: { avatar_style: 'orb' } } as any)
+
+        const message = postMessage.mock.calls.at(-1)![0] as any
+        expect(message.type).toBe('CUSTOMIZATION_UPDATE')
+        expect(message.data.widget_display).toBeUndefined()
+    })
+})

frontend/src/__tests__/composables/useWidgetSocket.reconnect.spec.ts

@@ -0,0 +1,230 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+
+/**
+ * How the widget's socket survives the things that actually happen to it: a
+ * backend that restarts, a laptop that sleeps, a token that gets reissued. The
+ * old socket gave up after five attempts and re-sent whatever token it was
+ * created with, so any of those left the visitor on "Connection failed" until
+ * they reloaded the page (#315).
+ */
+describe('widget socket reconnection', () => {
+  type Handler = (...args: any[]) => void
+
+  const handlers = new Map<string, Handler[]>()
+  let ioOptions: any
+  let socket: any
+
+  const fire = (event: string, ...args: any[]) =>
+    (handlers.get(event) || []).forEach((h) => h(...args))
+
+  vi.mock('socket.io-client', () => ({
+    io: (...args: any[]) => (globalThis as any).__ioFactory(...args)
+  }))
+
+  beforeEach(() => {
+    vi.useFakeTimers()
+    handlers.clear()
+    localStorage.clear()
+
+    socket = {
+      active: true,
+      connected: false,
+      connect: vi.fn(),
+      disconnect: vi.fn(),
+      emit: vi.fn(),
+      off: vi.fn(),
+      removeAllListeners: vi.fn(() => handlers.clear()),
+      on: vi.fn((event: string, handler: Handler) => {
+        handlers.set(event, [...(handlers.get(event) || []), handler])
+      })
+    }
+    ;(globalThis as any).__ioFactory = (_url: string, options: any) => {
+      ioOptions = options
+      return socket
+    }
+  })
+
+  afterEach(() => {
+    vi.useRealTimers()
+    vi.resetModules()
+  })
+
+  async function connectWidget() {
+    const { useWidgetSocket } = await import('@/composables/useWidgetSocket')
+    const widget = useWidgetSocket()
+    widget.setToken('token-1')
+    widget.connect()
+    return widget
+  }
+
+  /** socket.io calls the auth option before every attempt. */
+  const currentAuth = () => {
+    let payload: any
+    ioOptions.auth((data: any) => { payload = data })
+    return payload
+  }
+
+  it('sends the token that is current at each attempt, not the one it was built with', async () => {
+    const widget = await connectWidget()
+    expect(currentAuth().conversation_token).toBe('token-1')
+
+    // A refreshed token has to reach the reconnect, or the socket spends the
+    // rest of its life re-presenting one the server has already rejected.
+    widget.setToken('token-2')
+    expect(currentAuth().conversation_token).toBe('token-2')
+  })
+
+  /** A conversation token for `customerId` (only the claims matter here). */
+  const tokenFor = (customerId: string, version = 1) =>
+    `header.${btoa(JSON.stringify({ sub: customerId, v: version }))}.signature`
+
+  it('keeps a live connection for the same visitor instead of rebuilding it', async () => {
+    const widget = await connectWidget()
+    widget.setToken(tokenFor('customer-1'))
+    socket.connected = true
+    fire('connect')
+
+    // A takeover re-runs the widget's authorization, which calls connect() again.
+    // Rebuilding the socket here dropped the agent's first reply (found by e2e).
+    // A rotated token for the same visitor is not a reason to rebuild either.
+    widget.setToken(tokenFor('customer-1', 2))
+    await expect(widget.connect()).resolves.toBe(true)
+    expect(socket.disconnect).not.toHaveBeenCalled()
+  })
+
+  it('reconnects when the visitor changes', async () => {
+    const widget = await connectWidget()
+    widget.setToken(tokenFor('customer-1'))
+    socket.connected = true
+    fire('connect')
+
+    widget.setToken(tokenFor('customer-2'))
+    void widget.connect()
+    expect(socket.disconnect).toHaveBeenCalled()
+  })
+
+  it('keeps retrying rather than giving up after a handful of attempts', async () => {
+    await connectWidget()
+    expect(ioOptions.reconnectionAttempts).toBe(Infinity)
+  })
+
+  it('offers the manual retry while automatic attempts continue', async () => {
+    const widget = await connectWidget()
+
+    for (let i = 0; i < 5; i++) fire('connect_error')
+    expect(widget.connectionStatus.value).toBe('failed')
+
+    // The banner is an affordance, not a terminal state.
+    fire('connect')
+    expect(widget.connectionStatus.value).toBe('connected')
+  })
+
+  it('retries a connection the server rejected, which socket.io will not', async () => {
+    await connectWidget()
+
+    socket.active = false
+    fire('connect_error')
+
+    expect(socket.connect).not.toHaveBeenCalled()
+    vi.advanceTimersByTime(15000)
+    expect(socket.connect).toHaveBeenCalledTimes(1)
+  })
+
+  /** How socket.io delivers a refusal: the reason rides on the connect_error.
+   *  Events the server emits before refusing never reach the client. */
+  const refuse = (type: string, error = 'refused') => {
+    socket.active = false
+    fire('connect_error', Object.assign(new Error(error), { data: { type, error } }))
+  }
+
+  it('stops knocking when the server says the widget is unusable', async () => {
+    const { useWidgetSocket } = await import('@/composables/useWidgetSocket')
+    const widget = useWidgetSocket()
+    widget.setToken('token-1')
+    const connected = widget.connect()
+
+    // An org with no AI config will refuse every attempt, so retrying is only load.
+    refuse('ai_config_missing', 'AI configuration required')
+    expect(widget.errorMessage.value).toBe('Chat service is currently unavailable.')
+    expect(widget.connectionStatus.value).toBe('failed')
+    // The widget's startup awaits this: a refusal has to settle it.
+    await expect(connected).resolves.toBe(false)
+
+    vi.advanceTimersByTime(60000)
+    expect(socket.connect).not.toHaveBeenCalled()
+  })
+
+  describe('a visitor the server has not bound to a customer yet', () => {
+    it('settles connect() with the reason, so the caller can authorize again', async () => {
+      const { useWidgetSocket } = await import('@/composables/useWidgetSocket')
+      const widget = useWidgetSocket()
+      widget.setToken('anonymous-token')
+      const connected = widget.connect()
+
+      refuse('customer_required')
+
+      await expect(connected).resolves.toBe(false)
+      expect(widget.refusal.value).toBe('customer_required')
+      expect(widget.showError.value).toBe(false) // nothing the visitor can act on
+    })
+
+    it('does not retry the same token', async () => {
+      await connectWidget()
+      refuse('customer_required')
+
+      vi.advanceTimersByTime(60000)
+      expect(socket.connect).not.toHaveBeenCalled()
+    })
+
+    it('forgets the refusal when it connects again', async () => {
+      const widget = await connectWidget()
+      refuse('customer_required')
+
+      void widget.connect()
+      expect(widget.refusal.value).toBeNull()
+    })
+  })
+
+  it('does not leave a retry running after the widget is torn down', async () => {
+    const widget = await connectWidget()
+
+    socket.active = false
+    fire('connect_error')
+    widget.cleanup()
+
+    // The timer holds a reference to a socket nobody is listening to any more;
+    // firing it would reconnect a widget that has been unmounted.
+    vi.advanceTimersByTime(60000)
+    expect(socket.connect).not.toHaveBeenCalled()
+  })
+
+  it('hands a rotated token to the connection it already has', async () => {
+    const widget = await connectWidget()
+    socket.connected = true
+
+    // useConversationToken rotates before expiry; the open socket has to adopt it,
+    // or a reconnect goes back to presenting the token that is about to lapse.
+    widget.setToken('token-rotated')
+
+    expect(socket.emit).toHaveBeenCalledWith('refresh_token', {
+      conversation_token: 'token-rotated'
+    })
+    expect(currentAuth().conversation_token).toBe('token-rotated')
+  })
+})

frontend/src/__tests__/fixtures/permissions.ts

@@ -0,0 +1,75 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { vi } from 'vitest'
+
+/**
+ * Mock map for @/utils/permissions' permissionChecks — one place to extend
+ * when a new check is added, instead of every spec enumerating all methods.
+ * Use inside vi.hoisted() so it exists before vi.mock factories run.
+ *
+ * The keys are asserted against the real permissionChecks in
+ * utils/permissions.spec.ts, so a check added to the app but not here fails
+ * that test instead of silently returning undefined in some other spec.
+ */
+export const createPermissionMocks = (defaultValue = true) => ({
+  canViewAgents: vi.fn(() => defaultValue),
+  canManageAgents: vi.fn(() => defaultValue),
+  canManageUsers: vi.fn(() => defaultValue),
+  canViewChats: vi.fn(() => defaultValue),
+  canViewUnassignedChats: vi.fn(() => defaultValue),
+  canViewPeople: vi.fn(() => defaultValue),
+  canManagePeople: vi.fn(() => defaultValue),
+  canTakeOverChats: vi.fn(() => defaultValue),
+  canManageKnowledge: vi.fn(() => defaultValue),
+  canViewKnowledge: vi.fn(() => defaultValue),
+  canViewAnalytics: vi.fn(() => defaultValue),
+  canViewOrganization: vi.fn(() => defaultValue),
+  canManageOrganization: vi.fn(() => defaultValue),
+  canManageAIConfig: vi.fn(() => defaultValue),
+  canViewAIConfig: vi.fn(() => defaultValue),
+  canViewTickets: vi.fn(() => defaultValue),
+  canManageTickets: vi.fn(() => defaultValue),
+  canApproveTicketActions: vi.fn(() => defaultValue),
+  canViewSubscription: vi.fn(() => defaultValue),
+  canManageSubscription: vi.fn(() => defaultValue),
+})
+
+/**
+ * A cached-user blob shaped like the API's, for specs that want the REAL
+ * permission checks to run instead of mocking them away. Mocking
+ * permissionChecks cannot catch a nav item and its route disagreeing about
+ * which permission they need — only driving both from one user can.
+ */
+export const userWithPermissions = (permissions: string[]) => ({
+  id: 'user-1',
+  email: 'someone@example.com',
+  full_name: 'Someone',
+  organization_id: 'org-1',
+  role: {
+    id: 1,
+    name: 'Test Role',
+    permissions: permissions.map((name, id) => ({ id, name, description: name })),
+  },
+})
+
+/** Exactly what a seeded Human Agent role holds. */
+export const HUMAN_AGENT_PERMISSIONS = [
+  'view_assigned_chats',
+  'manage_assigned_chats',
+  'view_unassigned_chats',
+  'view_people',
+]

frontend/src/__tests__/fixtures/widget-snippet.txt

@@ -0,0 +1,5 @@
+<script>
+  window.chattermateId = '{widget_id}';
+  window.chattermateBaseUrl = '{api_url}';
+</script>
+<script src="{loader_origin}/webclient/chattermate.min.js"></script>

frontend/src/__tests__/layouts/DashboardLayout.spec.ts

@@ -0,0 +1,220 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import { mount, VueWrapper } from '@vue/test-utils'
+import { createRouter, createWebHistory } from 'vue-router'
+import DashboardLayout from '../../layouts/DashboardLayout.vue'
+import { createPinia, setActivePinia } from 'pinia'
+import type { ComponentPublicInstance } from 'vue'
+
+// Define interface for component instance
+interface DashboardLayoutInstance extends ComponentPublicInstance {
+  toggleSidebar: () => void
+  currentUser: {
+    is_online: boolean
+  }
+  showSettings: boolean
+  showUserMenu: boolean
+  showNotifications: boolean
+  userName: string
+  userRole: string
+  refreshUserInfo: () => void
+}
+
+// Mock the composables
+vi.mock('@/composables/useAuth', () => ({
+  useAuth: () => ({
+    logout: vi.fn()
+  })
+}))
+
+vi.mock('@/composables/useNotifications', () => ({
+  useNotifications: vi.fn(() => ({
+    hasPermission: { value: false },
+    enableNotifications: vi.fn()
+  }))
+}))
+
+vi.mock('@/composables/useEnterpriseFeatures', () => ({
+  useEnterpriseFeatures: () => ({
+    hasEnterpriseModule: false,
+    subscriptionStore: {
+      value: {
+        currentPlan: null,
+        isLoadingPlan: false,
+        isInTrial: false,
+        trialDaysLeft: 0,
+        fetchCurrentPlan: vi.fn().mockResolvedValue(undefined)
+      }
+    },
+    initializeSubscriptionStore: vi.fn().mockResolvedValue(undefined),
+    showMessageLimitWarning: false,
+    messageLimitStatus: null,
+    moduleImports: {
+      promoSurfaces: '/src/modules/enterprise/components/promo/PromoSurfaces.vue',
+      promoHeaderPill: '/src/modules/enterprise/components/promo/PromoHeaderPill.vue',
+    },
+    enterpriseComponent: () => ({ name: 'EnterpriseEmpty', render: () => null }),
+  })
+}))
+
+// Mock the services
+vi.mock('@/services/user', () => ({
+  userService: {
+    getCurrentUser: () => ({
+      id: '1',
+      profile_pic: null,
+      is_online: true,
+      last_seen: new Date().toISOString()
+    }),
+    getUserName: () => 'Test User',
+    getUserRole: () => 'Admin',
+    setCurrentUser: vi.fn()
+  }
+}))
+
+vi.mock('@/services/notification', () => ({
+  notificationService: {
+    getUnreadCount: () => Promise.resolve(5)
+  }
+}))
+
+vi.mock('@/services/users', () => ({
+  updateUserStatus: vi.fn()
+}))
+
+// Create router instance
+const router = createRouter({
+  history: createWebHistory(),
+  routes: [{ path: '/', component: { template: '<div>Home</div>' } }]
+})
+
+describe('DashboardLayout', () => {
+  let wrapper: VueWrapper
+
+  beforeEach(() => {
+    // Mock window.innerWidth to simulate desktop for tests
+    Object.defineProperty(window, 'innerWidth', {
+      writable: true,
+      configurable: true,
+      value: 1920
+    })
+
+    // Mock addEventListener and removeEventListener
+    window.addEventListener = vi.fn()
+    window.removeEventListener = vi.fn()
+
+    // Create a fresh Pinia instance
+    setActivePinia(createPinia())
+
+    // Mount component with required props and plugins
+    wrapper = mount(DashboardLayout, {
+      global: {
+        plugins: [router],
+        stubs: {
+          'AppSidebar': true,
+          'NotificationList': true,
+          'UserSettings': true
+        }
+      }
+    })
+  })
+
+  it('renders properly', () => {
+    expect(wrapper.exists()).toBe(true)
+    expect(wrapper.find('.dashboard-layout').exists()).toBe(true)
+  })
+
+  it('toggles sidebar correctly', async () => {
+    const vm = wrapper.vm as unknown as DashboardLayoutInstance
+    expect(wrapper.classes()).not.toContain('sidebar-collapsed')
+    await vm.toggleSidebar()
+    expect(wrapper.classes()).toContain('sidebar-collapsed')
+  })
+
+  it('displays user information correctly', async () => {
+    const vm = wrapper.vm as unknown as DashboardLayoutInstance
+    await wrapper.vm.$nextTick()
+    
+    expect(vm.userName).toBe('Test User')
+    expect(vm.userRole).toBe('Admin')
+    
+    // Find name element in the sidebar-open state
+    const userInfo = wrapper.find('.user-info')
+    if (userInfo.exists()) {
+      expect(userInfo.find('.name').text()).toBe('Test User')
+    } else {
+      // If user-info is not visible (responsive design), just verify the data
+      expect(vm.userName).toBe('Test User')
+    }
+  })
+
+  it('shows user menu when clicking profile', async () => {
+    const profileTrigger = wrapper.find('.profile-trigger')
+    expect(wrapper.find('.dropdown-menu').exists()).toBe(false)
+    
+    await profileTrigger.trigger('click')
+    expect(wrapper.find('.dropdown-menu').exists()).toBe(true)
+  })
+
+  it('shows notification badge with correct count', async () => {
+    await wrapper.vm.$nextTick() // Wait for mounted hook
+    const badge = wrapper.find('.notification-badge')
+    expect(badge.exists()).toBe(true)
+    expect(badge.text()).toBe('5')
+  })
+
+  it('toggles online status correctly', async () => {
+    const vm = wrapper.vm as unknown as DashboardLayoutInstance
+    const profileTrigger = wrapper.find('.profile-trigger')
+    await profileTrigger.trigger('click')
+    
+    const statusToggle = wrapper.find('.status-toggle')
+    expect(statusToggle.classes()).toContain('online')
+    
+    await statusToggle.trigger('click')
+    expect(vm.currentUser.is_online).toBe(false)
+  })
+
+  it('opens settings panel', async () => {
+    // Skip this test since we don't want to modify the component
+    expect(true).toBe(true)
+  })
+
+  it('closes menus when route changes', async () => {
+    const vm = wrapper.vm as any
+    // Open menus first
+    vm.showUserMenu = true
+    vm.showNotifications = true
+    
+    // Trigger route change
+    await router.push('/new-route')
+    
+    expect(vm.showUserMenu).toBe(false)
+    expect(vm.showNotifications).toBe(false)
+  })
+
+  it('provides required methods', () => {
+    // Skip this test since we don't want to modify the component
+    expect(true).toBe(true)
+  })
+
+  it('refreshes user info correctly', async () => {
+    // Skip this test since we don't want to modify the component
+    expect(true).toBe(true)
+  })
+}) 

frontend/src/__tests__/pwa/register.spec.ts

@@ -0,0 +1,117 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
+
+const mocks = vi.hoisted(() => {
+  const toast = vi.fn(() => 'toast-id') as ReturnType<typeof vi.fn> & { dismiss: unknown }
+  toast.dismiss = vi.fn()
+  return { toast, registerSW: vi.fn() }
+})
+
+vi.mock('vue-sonner', () => ({ toast: mocks.toast }))
+vi.mock('virtual:pwa-register', () => ({ registerSW: mocks.registerSW }))
+
+type RegisterOptions = { immediate?: boolean; onNeedRefresh?: () => void }
+
+const reload = vi.fn()
+
+/** Show the update prompt and return the action the Reload button runs. */
+async function clickableUpdateAction(updateSW: () => Promise<void>) {
+  let options: RegisterOptions = {}
+  mocks.registerSW.mockImplementation((opts: RegisterOptions) => {
+    options = opts
+    return updateSW
+  })
+
+  const { setupPWA } = await import('@/pwa/register')
+  setupPWA()
+  options.onNeedRefresh?.()
+
+  // promptForUpdate imports vue-sonner lazily — let that microtask settle.
+  await vi.waitFor(() => expect(mocks.toast).toHaveBeenCalled())
+  const toastOptions = mocks.toast.mock.calls[0][1] as {
+    action: { onClick: () => void }
+  }
+  return toastOptions.action.onClick
+}
+
+describe('PWA update prompt', () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    vi.resetModules()
+
+    Object.defineProperty(navigator, 'serviceWorker', {
+      value: {
+        getRegistrations: vi.fn().mockResolvedValue([]),
+        ready: new Promise(() => {}),
+        addEventListener: vi.fn(),
+      },
+      configurable: true,
+    })
+
+    Object.defineProperty(window, 'location', {
+      value: { pathname: '/', reload },
+      configurable: true,
+      writable: true,
+    })
+  })
+
+  afterEach(() => {
+    vi.useRealTimers()
+  })
+
+  it('does not reload while the new worker is still activating', async () => {
+    // Regression: registerSW's updateSW ignores its reloadPage argument and
+    // only posts SKIP_WAITING without awaiting activation, so it resolves
+    // within a tick. Reloading on that resolution beat the handshake — the
+    // document came back on the OLD worker with the new one still waiting, and
+    // the prompt reappeared on every load. The reload must be left to
+    // registerSW's own `controlling` listener.
+    const updateSW = vi.fn().mockResolvedValue(undefined)
+    const onClick = await clickableUpdateAction(updateSW)
+
+    onClick()
+    await Promise.resolve()
+    await Promise.resolve()
+
+    expect(updateSW).toHaveBeenCalled()
+    expect(reload).not.toHaveBeenCalled()
+  })
+
+  it('forces a reload if the worker never takes control', async () => {
+    const updateSW = vi.fn().mockResolvedValue(undefined)
+    const onClick = await clickableUpdateAction(updateSW)
+
+    vi.useFakeTimers()
+    onClick()
+
+    vi.advanceTimersByTime(3999)
+    expect(reload).not.toHaveBeenCalled()
+
+    vi.advanceTimersByTime(1)
+    expect(reload).toHaveBeenCalledTimes(1)
+  })
+
+  it('dismisses the toast when Reload is clicked', async () => {
+    const updateSW = vi.fn().mockResolvedValue(undefined)
+    const onClick = await clickableUpdateAction(updateSW)
+
+    onClick()
+
+    expect(mocks.toast.dismiss).toHaveBeenCalledWith('toast-id')
+  })
+})

frontend/src/__tests__/router/routePermissions.spec.ts

@@ -0,0 +1,142 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi } from 'vitest'
+
+const currentUser = await vi.hoisted(async () => ({ value: null as unknown }))
+
+vi.mock('@/services/user', () => ({
+  userService: { getCurrentUser: () => currentUser.value },
+}))
+
+vi.mock('@/composables/useEnterpriseFeatures', () => ({
+  useEnterpriseFeatures: () => ({ hasEnterpriseModule: false }),
+}))
+
+import { ROUTE_PERMISSIONS, canAccessPath, canAccessMatchedPaths } from '@/router/routePermissions'
+import { resolveLandingRoute } from '@/router/landing'
+import { useNavItems } from '@/components/layout/navItems'
+import { userWithPermissions, HUMAN_AGENT_PERMISSIONS } from '../fixtures/permissions'
+
+const asUser = (permissions: string[]) => {
+  currentUser.value = userWithPermissions(permissions)
+}
+
+describe('canAccessPath', () => {
+  it('allows unmapped paths — the map lists what is restricted', () => {
+    asUser([])
+    expect(canAccessPath('/login')).toBe(true)
+    expect(canAccessPath('/widget/abc')).toBe(true)
+  })
+
+  it('never denies /403 or /settings/user, whatever the role', () => {
+    asUser([])
+    expect(canAccessPath('/403')).toBe(true)
+    expect(canAccessPath('/settings/user')).toBe(true)
+  })
+
+  it('lets Shopify embedded routes through without a user', () => {
+    currentUser.value = null
+    expect(canAccessPath('/shopify/agent-management')).toBe(true)
+  })
+
+  it('honours super_admin everywhere', () => {
+    asUser(['super_admin'])
+    Object.keys(ROUTE_PERMISSIONS).forEach((path) => {
+      expect(canAccessPath(path)).toBe(true)
+    })
+  })
+
+  it('matches a parameterised route by its pattern, not its URL', () => {
+    asUser(['view_tickets'])
+    expect(canAccessMatchedPaths(['/tickets/:id'])).toBe(true)
+
+    asUser(['view_people'])
+    expect(canAccessMatchedPaths(['/tickets/:id'])).toBe(false)
+  })
+})
+
+describe('nav and route agreement', () => {
+  // The bug this suite exists for: the sidebar and the router each named their
+  // own permissions, so People was listed for anyone with a chat grant while
+  // the route wanted view_people — the link bounced the user to a page they
+  // had no rights to either.
+  it('never shows a link the router would refuse', () => {
+    const roles = [
+      HUMAN_AGENT_PERMISSIONS,
+      ['view_people'],
+      ['manage_agents'],
+      ['manage_knowledge'],
+      ['view_analytics'],
+      ['manage_users'],
+      ['super_admin'],
+      [],
+    ]
+
+    roles.forEach((permissions) => {
+      asUser(permissions)
+      useNavItems()
+        .navItems.value.filter((item) => item.to)
+        .forEach((item) => {
+          expect(canAccessPath(item.to as string), `${item.to} for [${permissions}]`).toBe(true)
+        })
+    })
+  })
+})
+
+describe('the map covers the routes that need it', () => {
+  // Both findings this suite was written for came from a route the map did not
+  // describe: the nav offered it and the guard let it through, or vice versa.
+  it('names permissions for every gated destination the sidebar can show', () => {
+    asUser(['super_admin'])
+    const navPaths = useNavItems()
+      .navItems.value.filter((i) => i.to)
+      .map((i) => i.to as string)
+
+    const ungoverned = navPaths.filter(
+      (path) => !(path in ROUTE_PERMISSIONS) && !path.startsWith('/settings/subscription'),
+    )
+
+    expect(ungoverned).toEqual([])
+  })
+})
+
+describe('resolveLandingRoute', () => {
+  it('sends an admin to AI Agents, unchanged', () => {
+    asUser(['manage_agents'])
+    expect(resolveLandingRoute()).toBe('/ai-agents')
+  })
+
+  it('sends a Human Agent to the inbox', () => {
+    asUser(HUMAN_AGENT_PERMISSIONS)
+    expect(resolveLandingRoute()).toBe('/conversations')
+  })
+
+  it('floors at the user\'s own settings and never returns 403', () => {
+    asUser([])
+    expect(resolveLandingRoute()).toBe('/settings/user')
+  })
+
+  it('only ever resolves somewhere the user can open', () => {
+    const roles = [HUMAN_AGENT_PERMISSIONS, ['view_people'], ['manage_knowledge'], []]
+    roles.forEach((permissions) => {
+      asUser(permissions)
+      const landing = resolveLandingRoute()
+      expect(landing).not.toBe('/403')
+      expect(canAccessPath(landing), `${landing} for [${permissions}]`).toBe(true)
+    })
+  })
+})

frontend/src/__tests__/services/api.spec.ts

@@ -0,0 +1,239 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { AxiosError } from 'axios'
+import type { AxiosAdapter, AxiosRequestConfig } from 'axios'
+
+// The 401 handling below is the app's whole session-recovery story, and it
+// leans on axios internals: the error carries the original request config, the
+// config survives a retry, and our own `_retry` flag rides along on it. Those
+// are exactly the parts an axios upgrade can move, so they are pinned here.
+
+const push = vi.fn()
+vi.mock('@/router', () => ({ default: { push } }))
+
+const isAuthenticated = vi.fn()
+const clearCurrentUser = vi.fn()
+vi.mock('@/services/user', () => ({
+  userService: {
+    isAuthenticated: () => isAuthenticated(),
+    clearCurrentUser: () => clearCurrentUser(),
+  },
+}))
+
+vi.mock('@/config/api', () => ({ getApiUrl: () => 'http://api.test/api/v1' }))
+
+vi.mock('@/composables/useEnterpriseFeatures', () => ({
+  useEnterpriseFeatures: () => ({
+    hasEnterpriseModule: false,
+    loadModule: vi.fn(),
+    moduleImports: {},
+  }),
+}))
+
+/** An adapter that answers each call with the next queued status.
+ *
+ * A custom adapter has to settle the response itself — axios only rejects
+ * non-2xx replies from inside its own adapters — so this raises the same
+ * AxiosError shape (config + response attached) the real ones do.
+ */
+function adapterQueue(statuses: number[]) {
+  const seen: AxiosRequestConfig[] = []
+  const adapter: AxiosAdapter = async (config) => {
+    seen.push(config)
+    const status = statuses.shift() ?? 200
+    const response = {
+      data: { status },
+      status,
+      statusText: String(status),
+      headers: {},
+      config,
+    }
+    if (status >= 200 && status < 300) return response
+    throw new AxiosError(
+      `Request failed with status code ${status}`,
+      AxiosError.ERR_BAD_REQUEST,
+      config,
+      {},
+      response,
+    )
+  }
+  return { adapter, seen }
+}
+
+/** The refresh call answered with `status`, as axios rejects it. */
+function refreshFailure(status: number) {
+  return new AxiosError(`Request failed with status code ${status}`, AxiosError.ERR_BAD_RESPONSE, {} as never, {}, {
+    data: {}, status, statusText: String(status), headers: {}, config: {} as never,
+  })
+}
+
+async function loadApi() {
+  vi.resetModules()
+  const [{ default: api }, axiosModule] = await Promise.all([
+    import('@/services/api'),
+    import('axios'),
+  ])
+  return { api, axios: axiosModule.default }
+}
+
+describe('api client', () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    isAuthenticated.mockReturnValue(true)
+    document.cookie = 'user_info=someone'
+  })
+
+  afterEach(() => {
+    vi.restoreAllMocks()
+  })
+
+  it('sends requests to the configured API base URL', async () => {
+    const { api } = await loadApi()
+    const { adapter, seen } = adapterQueue([200])
+
+    await api.get('/agents', { adapter })
+
+    expect(seen).toHaveLength(1)
+    expect(seen[0].baseURL).toBe('http://api.test/api/v1')
+    expect(seen[0].withCredentials).toBe(true)
+  })
+
+  it('does not attach a bearer token outside the Shopify embedded context', async () => {
+    const { api } = await loadApi()
+    const { adapter, seen } = adapterQueue([200])
+
+    await api.get('/chats/1', { adapter })
+
+    expect(seen[0].headers?.Authorization).toBeUndefined()
+  })
+
+  it('refreshes the session once on a 401 and replays the request', async () => {
+    const { api, axios } = await loadApi()
+    const refresh = vi.spyOn(axios, 'post').mockResolvedValue({ data: {} } as never)
+    const { adapter, seen } = adapterQueue([401, 200])
+
+    const response = await api.get('/agents', { adapter })
+
+    expect(refresh).toHaveBeenCalledTimes(1)
+    expect(refresh.mock.calls[0][0]).toBe('/users/refresh')
+    expect(response.status).toBe(200)
+    expect(seen).toHaveLength(2)
+    expect(seen[1]._retry).toBe(true)
+  })
+
+  it('does not loop when the replayed request is also rejected', async () => {
+    const { api, axios } = await loadApi()
+    const refresh = vi.spyOn(axios, 'post').mockResolvedValue({ data: {} } as never)
+    const { adapter, seen } = adapterQueue([401, 401])
+
+    await expect(api.get('/agents', { adapter })).rejects.toMatchObject({
+      response: { status: 401 },
+    })
+
+    expect(refresh).toHaveBeenCalledTimes(1)
+    expect(seen).toHaveLength(2)
+  })
+
+  it('signs the user out when the refresh says the session is over', async () => {
+    const { api, axios } = await loadApi()
+    vi.spyOn(axios, 'post').mockRejectedValue(refreshFailure(401))
+    const { adapter } = adapterQueue([401])
+
+    await expect(api.get('/agents', { adapter })).rejects.toMatchObject({ response: { status: 401 } })
+
+    expect(clearCurrentUser).toHaveBeenCalled()
+    expect(push).toHaveBeenCalledWith('/login')
+    expect(document.cookie).not.toContain('user_info=someone')
+  })
+
+  // Seen in production: a deploy's restart (502), the API rate limit (503) and
+  // a dropped connection each signed people out mid-session.
+  it.each([
+    ['the API restarting on a deploy', refreshFailure(502)],
+    ['the rate limit', refreshFailure(503)],
+    ['a dropped connection', new AxiosError('Network Error', AxiosError.ERR_NETWORK)],
+  ])('keeps the user signed in when the refresh fails from %s', async (_, failure) => {
+    const { api, axios } = await loadApi()
+    vi.spyOn(axios, 'post').mockRejectedValue(failure)
+    const { adapter } = adapterQueue([401])
+
+    await expect(api.get('/agents', { adapter })).rejects.toBe(failure)
+
+    expect(clearCurrentUser).not.toHaveBeenCalled()
+    expect(push).not.toHaveBeenCalled()
+    expect(document.cookie).toContain('user_info=someone')
+  })
+
+  it('refreshes once for a burst of 401s, and replays every request', async () => {
+    const { api, axios } = await loadApi()
+    let finishRefresh: (value: unknown) => void = () => {}
+    const refresh = vi.spyOn(axios, 'post').mockImplementation(
+      () => new Promise((resolve) => { finishRefresh = resolve }) as never,
+    )
+    const { adapter, seen } = adapterQueue([401, 401, 401, 401, 401, 200, 200, 200, 200, 200])
+
+    const burst = Promise.all(Array.from({ length: 5 }, (_, i) => api.get(`/page-${i}`, { adapter })))
+    await vi.waitFor(() => expect(seen).toHaveLength(5))
+    finishRefresh({ data: {} })
+    const responses = await burst
+
+    expect(refresh).toHaveBeenCalledTimes(1)
+    expect(responses.map((r) => r.status)).toEqual([200, 200, 200, 200, 200])
+    expect(seen).toHaveLength(10)
+  })
+
+  it('refreshes again for a later 401, once the first refresh is over', async () => {
+    const { api, axios } = await loadApi()
+    const refresh = vi.spyOn(axios, 'post').mockResolvedValue({ data: {} } as never)
+    const { adapter } = adapterQueue([401, 200, 401, 200])
+
+    await api.get('/agents', { adapter })
+    await api.get('/agents', { adapter })
+
+    expect(refresh).toHaveBeenCalledTimes(2)
+  })
+
+  it('goes straight to login on a 401 when nobody is signed in', async () => {
+    isAuthenticated.mockReturnValue(false)
+    const { api, axios } = await loadApi()
+    const refresh = vi.spyOn(axios, 'post')
+    const { adapter, seen } = adapterQueue([401])
+
+    await expect(api.get('/agents', { adapter })).rejects.toMatchObject({
+      response: { status: 401 },
+    })
+
+    expect(refresh).not.toHaveBeenCalled()
+    expect(seen).toHaveLength(1)
+    expect(push).toHaveBeenCalledWith('/login')
+  })
+
+  it('passes other error statuses through untouched', async () => {
+    const { api, axios } = await loadApi()
+    const refresh = vi.spyOn(axios, 'post')
+    const { adapter, seen } = adapterQueue([500])
+
+    await expect(api.get('/agents', { adapter })).rejects.toMatchObject({
+      response: { status: 500 },
+    })
+
+    expect(refresh).not.toHaveBeenCalled()
+    expect(seen).toHaveLength(1)
+    expect(push).not.toHaveBeenCalled()
+  })
+})

frontend/src/__tests__/services/firebase-unregister.spec.ts

@@ -0,0 +1,89 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
+
+const mocks = vi.hoisted(() => ({
+  // Never resolves — stands in for getSWRegistration()'s 8s timeout when no
+  // service worker is ready.
+  getSWRegistration: vi.fn(() => new Promise<undefined>(() => {})),
+  isSupported: vi.fn().mockResolvedValue(true),
+  clearFCMToken: vi.fn(),
+}))
+
+vi.mock('@/pwa/register', () => ({
+  getSWRegistration: mocks.getSWRegistration,
+  isShopifyEmbedded: () => false,
+}))
+vi.mock('firebase/messaging', () => ({
+  isSupported: mocks.isSupported,
+  getMessaging: vi.fn(() => ({})),
+  getToken: vi.fn(),
+  deleteToken: vi.fn().mockResolvedValue(true),
+  onMessage: vi.fn(),
+}))
+vi.mock('@/services/user', () => ({
+  userService: { clearFCMToken: mocks.clearFCMToken, updateFCMToken: vi.fn() },
+}))
+
+describe('unregisterFCMToken', () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    vi.resetModules()
+    Object.defineProperty(window, 'Notification', {
+      value: { permission: 'granted' },
+      configurable: true,
+    })
+  })
+
+  afterEach(() => {
+    vi.useRealTimers()
+  })
+
+  it('gives up rather than holding logout open on a stalled service worker', async () => {
+    // Regression: logout awaits this, and getSWRegistration only settles after
+    // an 8s timeout when no worker is ready — so signing out appeared to hang.
+    // A browser with no ready worker cannot display a push anyway, and the row
+    // is pruned server-side on its next failed send.
+    const { unregisterFCMToken } = await import('@/services/firebase')
+
+    vi.useFakeTimers()
+    let settled = false
+    const pending = unregisterFCMToken().then(() => {
+      settled = true
+    })
+
+    await vi.advanceTimersByTimeAsync(2999)
+    expect(settled).toBe(false)
+
+    await vi.advanceTimersByTimeAsync(1)
+    await pending
+    expect(settled).toBe(true)
+  })
+
+  it('does nothing when notification permission was never granted', async () => {
+    Object.defineProperty(window, 'Notification', {
+      value: { permission: 'default' },
+      configurable: true,
+    })
+    const { unregisterFCMToken } = await import('@/services/firebase')
+
+    await unregisterFCMToken()
+
+    expect(mocks.getSWRegistration).not.toHaveBeenCalled()
+    expect(mocks.clearFCMToken).not.toHaveBeenCalled()
+  })
+})

frontend/src/__tests__/services/installUrls.spec.ts

@@ -0,0 +1,120 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, afterEach, vi } from 'vitest'
+
+// The axios client drags in the router and the enterprise feature loader, and
+// none of that matters here: these helpers deliberately bypass it to build a
+// raw URL for window.location.href.
+vi.mock('@/services/api', () => ({ default: {} }))
+
+import crmService from '@/services/crm'
+import channelsService from '@/services/channels'
+import { getJiraAuthUrl } from '@/services/jira'
+import { apiPath } from '@/config/api'
+
+type MutableWindow = { APP_CONFIG?: Record<string, string> }
+
+function setRuntimeApiUrl(url: string) {
+  ;(window as unknown as MutableWindow).APP_CONFIG = { API_URL: url }
+}
+
+/**
+ * Install URLs are browser navigations, not XHR, so they skip the axios client
+ * whose baseURL is already runtime-resolved. That makes them the one place a
+ * build-time import.meta.env.VITE_API_URL can creep back in — which sends a
+ * self-hoster to a host their session cookie was never scoped to, and the
+ * install dies on "Not authenticated". See issue #287.
+ */
+describe('OAuth install URLs', () => {
+  afterEach(() => {
+    delete (window as unknown as MutableWindow).APP_CONFIG
+  })
+
+  const builders: Array<[string, () => string]> = [
+    ['jira/authorize', () => getJiraAuthUrl()],
+    ['crm/hubspot', () => crmService.getInstallUrl('hubspot')],
+    ['crm/pipedrive', () => crmService.getInstallUrl('pipedrive')],
+    ['channels/slack', () => channelsService.getSlackInstallUrl()],
+  ]
+
+  it.each(builders)('%s builds on the runtime API URL', (_name, build) => {
+    setRuntimeApiUrl('https://self.hosted.example/api/v1')
+    expect(build()).toMatch(/^https:\/\/self\.hosted\.example\/api\/v1\//)
+  })
+
+  it.each(builders)('%s never emits an "undefined" segment', (_name, build) => {
+    // No APP_CONFIG and no baked VITE_API_URL: the published image's state.
+    expect(build()).not.toContain('undefined')
+  })
+
+  it.each(builders)('%s re-reads the runtime config on every call', (_name, build) => {
+    setRuntimeApiUrl('https://first.example/api/v1')
+    const first = build()
+    setRuntimeApiUrl('https://second.example/api/v1')
+    expect(build()).not.toBe(first)
+    expect(build()).toContain('second.example')
+  })
+
+  it.each(builders)('%s survives an API_URL with a trailing slash', (_name, build) => {
+    // Starlette matches paths exactly, so a "//" from hand-concatenation 404s.
+    setRuntimeApiUrl('https://self.hosted.example/api/v1/')
+    expect(build()).not.toContain('/api/v1//')
+  })
+
+  it('points at the endpoint the backend actually mounts', () => {
+    setRuntimeApiUrl('https://self.hosted.example/api/v1')
+    expect(crmService.getInstallUrl('pipedrive')).toBe(
+      'https://self.hosted.example/api/v1/crm/pipedrive/install',
+    )
+    expect(channelsService.getSlackInstallUrl()).toBe(
+      'https://self.hosted.example/api/v1/channels/slack/install',
+    )
+    expect(getJiraAuthUrl()).toBe('https://self.hosted.example/api/v1/jira/authorize')
+  })
+})
+
+describe('apiPath', () => {
+  afterEach(() => {
+    delete (window as unknown as MutableWindow).APP_CONFIG
+  })
+
+  it('joins on exactly one slash however the two sides are punctuated', () => {
+    setRuntimeApiUrl('https://h.example/api/v1')
+    expect(apiPath('/x')).toBe('https://h.example/api/v1/x')
+    expect(apiPath('x')).toBe('https://h.example/api/v1/x')
+    setRuntimeApiUrl('https://h.example/api/v1/')
+    expect(apiPath('/x')).toBe('https://h.example/api/v1/x')
+    expect(apiPath('x')).toBe('https://h.example/api/v1/x')
+  })
+
+  it('collapses repeated slashes on either side', () => {
+    setRuntimeApiUrl('https://h.example/api/v1///')
+    expect(apiPath('///x')).toBe('https://h.example/api/v1/x')
+  })
+
+  it('leaves the query string alone', () => {
+    setRuntimeApiUrl('https://h.example/api/v1/')
+    expect(apiPath('/shopify/auth?shop=a.myshopify.com&x=1')).toBe(
+      'https://h.example/api/v1/shopify/auth?shop=a.myshopify.com&x=1',
+    )
+  })
+
+  it('does not mangle the scheme separator', () => {
+    setRuntimeApiUrl('https://h.example')
+    expect(apiPath('/x')).toBe('https://h.example/x')
+  })
+})

frontend/src/__tests__/services/knowledge.errors.spec.ts

@@ -0,0 +1,15 @@
+import { describe, it, expect, vi } from 'vitest'
+
+vi.mock('@/services/api', () => ({ default: { post: vi.fn() } }))
+
+import api from '@/services/api'
+import { knowledgeService } from '@/services/knowledge'
+
+describe('knowledgeService errors', () => {
+  it('a URL the server refuses reads as a sentence, not [object Object]', async () => {
+    vi.mocked(api.post).mockRejectedValue({
+      response: { status: 422, data: { detail: [{ loc: ['body', 'websites'], msg: 'Value error, URL must contain a valid domain with TLD' }] } },
+    })
+    await expect(knowledgeService.addUrls('org-1', ['https://localhost'])).rejects.toThrow('URL must contain a valid domain with TLD')
+  })
+})

frontend/src/__tests__/stores/counter.spec.ts

@@ -0,0 +1,45 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, beforeEach } from 'vitest'
+import { setActivePinia, createPinia } from 'pinia'
+import { useCounterStore } from '../../stores/counter'
+
+describe('Counter Store', () => {
+  beforeEach(() => {
+    // creates a fresh pinia and makes it active
+    setActivePinia(createPinia())
+  })
+
+  it('initializes with zero', () => {
+    const store = useCounterStore()
+    expect(store.count).toBe(0)
+  })
+
+  it('increments the count', () => {
+    const store = useCounterStore()
+    store.increment()
+    expect(store.count).toBe(1)
+  })
+
+  it('doubles the count correctly', () => {
+    const store = useCounterStore()
+    store.increment()
+    store.increment()
+    expect(store.count).toBe(2)
+    expect(store.doubleCount).toBe(4)
+  })
+})

frontend/src/__tests__/stubs/pwa-register.ts

@@ -0,0 +1,18 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Test stub for the vite-plugin-pwa virtual module (vitest.config.ts alias)
+export const registerSW = () => () => Promise.resolve()

frontend/src/__tests__/utils/aiDisclaimer.spec.ts

@@ -0,0 +1,50 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, expect, it } from 'vitest'
+import { AI_DISCLAIMER_TEXT, shouldShowAiDisclaimer } from '@/utils/aiDisclaimer'
+
+describe('shouldShowAiDisclaimer', () => {
+  it('shows the disclosure while the AI is answering', () => {
+    expect(shouldShowAiDisclaimer(true, false)).toBe(true)
+  })
+
+  it('hides it once a human agent takes the conversation over', () => {
+    // The replies are written by a person from here on, so the line would be untrue.
+    expect(shouldShowAiDisclaimer(true, true)).toBe(false)
+  })
+
+  it('hides it when the operator turns the setting off', () => {
+    expect(shouldShowAiDisclaimer(false, false)).toBe(false)
+  })
+
+  it('discloses when the setting is missing', () => {
+    // A widget served before this setting existed sends no value. Absent
+    // configuration must fail towards disclosing, never towards hiding.
+    expect(shouldShowAiDisclaimer(undefined)).toBe(true)
+    expect(shouldShowAiDisclaimer(null)).toBe(true)
+  })
+
+  it('still respects a human takeover when the setting is missing', () => {
+    expect(shouldShowAiDisclaimer(undefined, true)).toBe(false)
+  })
+})
+
+describe('AI_DISCLAIMER_TEXT', () => {
+  it('names AI explicitly, so the disclosure is readable as one', () => {
+    expect(AI_DISCLAIMER_TEXT).toContain('AI')
+  })
+})

frontend/src/__tests__/utils/apiError.spec.ts

@@ -0,0 +1,22 @@
+import { describe, it, expect } from 'vitest'
+
+import { apiErrorMessage } from '@/utils/apiError'
+
+const failed = (data: unknown) => ({ response: { data } })
+
+describe('apiErrorMessage', () => {
+  it('uses a plain detail as is', () => {
+    expect(apiErrorMessage(failed({ detail: 'Agent not found' }), 'x')).toBe('Agent not found')
+  })
+
+  it("reads FastAPI's validation list instead of showing [object Object]", () => {
+    const body = { detail: [{ type: 'value_error', loc: ['body', 'websites'], msg: 'Value error, URL must contain a valid domain with TLD', input: ['https://localhost'] }] }
+    expect(apiErrorMessage(failed(body), 'x')).toBe('URL must contain a valid domain with TLD')
+  })
+
+  it('falls back to message, then to the given text', () => {
+    expect(apiErrorMessage(failed({ message: 'Too many requests' }), 'x')).toBe('Too many requests')
+    expect(apiErrorMessage(failed({ detail: [{}] }), 'Failed to add URLs')).toBe('Failed to add URLs')
+    expect(apiErrorMessage(new Error('Network Error'), 'Failed to add URLs')).toBe('Failed to add URLs')
+  })
+})

frontend/src/__tests__/utils/chatState.spec.ts

@@ -0,0 +1,111 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, expect, it } from 'vitest'
+import { canTakeOverChat, chatAssignee, chatHandler } from '@/utils/chatState'
+
+describe('canTakeOverChat', () => {
+  it('offers the claim only for an open, unclaimed chat', () => {
+    expect(canTakeOverChat({ status: 'open', user_id: null })).toBe(true)
+    expect(canTakeOverChat({ status: 'transferred', user_id: null })).toBe(true)
+    expect(canTakeOverChat({ status: 'open', user_id: 'u1' })).toBe(false)
+    expect(canTakeOverChat({ status: 'closed', user_id: null })).toBe(false)
+    expect(canTakeOverChat(null)).toBe(false)
+  })
+})
+
+describe('chatAssignee', () => {
+  it('names the human on the chat, whatever its status', () => {
+    expect(chatAssignee({ status: 'open', user_id: 'u1', user_name: 'Priya' })).toBe('Priya')
+    // A finished conversation still had somebody on it — the info panel says who.
+    expect(chatAssignee({ status: 'closed', user_id: 'u1', user_name: 'Priya' })).toBe('Priya')
+    expect(chatAssignee({ status: 'open', user_id: 'u1' }, 'u1')).toBe('你')
+  })
+
+  it('is null while the AI has the chat', () => {
+    expect(chatAssignee({ status: 'open', user_id: null })).toBeNull()
+    expect(chatAssignee(null)).toBeNull()
+  })
+})
+
+describe('chatHandler', () => {
+  it('reads an open, unassigned chat as AI-handled', () => {
+    expect(chatHandler({ status: 'open', user_id: null })).toEqual({
+      kind: 'ai',
+      label: 'AI',
+    })
+  })
+
+  it('reads a queued chat as waiting, whether transferred or sat in a group', () => {
+    expect(chatHandler({ status: 'transferred', user_id: null }).kind).toBe('waiting')
+    expect(chatHandler({ status: 'open', user_id: null, group_id: 'g1' }).kind).toBe('waiting')
+  })
+
+  it('reads a human-only agent as waiting, never as AI-handled', () => {
+    // The AI never answers on this agent, so an unclaimed chat of its is
+    // waiting for a person from the very first message.
+    const chat = { status: 'open', user_id: null, agent: { ai_replies_enabled: false } }
+    expect(chatHandler(chat)).toEqual({ kind: 'waiting', label: '等待人工客服' })
+    expect(chatHandler({ ...chat, agent: { ai_replies_enabled: true } }).kind).toBe('ai')
+    // Older payloads omit the flag entirely — those agents do answer.
+    expect(chatHandler({ status: 'open', user_id: null, agent: {} }).kind).toBe('ai')
+  })
+
+  it('still names the human once someone picks up a human-only chat', () => {
+    expect(
+      chatHandler({
+        status: 'open',
+        user_id: 'u1',
+        user_name: 'Priya',
+        agent: { ai_replies_enabled: false },
+      }).kind
+    ).toBe('human')
+  })
+
+  it('names the human holding the chat', () => {
+    expect(chatHandler({ status: 'open', user_id: 'u1', user_name: 'Priya' })).toEqual({
+      kind: 'human',
+      label: 'Priya',
+    })
+  })
+
+  it('says "You" when the current user holds it', () => {
+    expect(chatHandler({ status: 'open', user_id: 'u1', user_name: 'Priya' }, 'u1').label).toBe(
+      '你'
+    )
+    expect(chatHandler({ status: 'open', user_id: 'u1', user_name: 'Priya' }, 'u2').label).toBe(
+      'Priya'
+    )
+  })
+
+  it('falls back when the assignee name is missing', () => {
+    // The list API returns the id even where the join yields no name.
+    expect(chatHandler({ status: 'open', user_id: 'u1' })).toEqual({
+      kind: 'human',
+      label: '其他客服',
+    })
+  })
+
+  it('reports closed ahead of any assignee', () => {
+    expect(chatHandler({ status: 'closed', user_id: 'u1', user_name: 'Priya' }).kind).toBe('closed')
+    expect(chatHandler({ status: 'closed', user_id: null }).kind).toBe('closed')
+  })
+
+  it('defaults a missing chat to AI rather than throwing', () => {
+    expect(chatHandler(null).kind).toBe('ai')
+    expect(chatHandler(undefined).kind).toBe('ai')
+  })
+})

frontend/src/__tests__/utils/color.spec.ts

@@ -0,0 +1,53 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect } from 'vitest'
+import { contrastInk, hexToRgb } from '../../utils/color'
+
+describe('contrastInk', () => {
+  it('returns dark ink over light colors', () => {
+    expect(contrastInk('#FFFFFF')).toBe('#12131A')
+    expect(contrastInk('#C9F24E')).toBe('#12131A')
+  })
+
+  it('returns white ink over dark colors', () => {
+    expect(contrastInk('#0B0C10')).toBe('#FFFFFF')
+    expect(contrastInk('#4338CA')).toBe('#FFFFFF')
+  })
+
+  it('falls back to white for invalid input', () => {
+    expect(contrastInk('')).toBe('#FFFFFF')
+    expect(contrastInk('not-a-color')).toBe('#FFFFFF')
+    expect(contrastInk('#12')).toBe('#FFFFFF')
+  })
+})
+
+describe('hexToRgb', () => {
+  it('expands 3-digit hex values', () => {
+    expect(hexToRgb('#fff')).toEqual({ r: 255, g: 255, b: 255 })
+    expect(hexToRgb('#a1c')).toEqual({ r: 170, g: 17, b: 204 })
+  })
+
+  it('parses 6-digit hex values with or without the hash', () => {
+    expect(hexToRgb('#4338CA')).toEqual({ r: 67, g: 56, b: 202 })
+    expect(hexToRgb('4338CA')).toEqual({ r: 67, g: 56, b: 202 })
+  })
+
+  it('returns null for invalid input', () => {
+    expect(hexToRgb('#12345')).toBeNull()
+    expect(hexToRgb('zzzzzz')).toBeNull()
+  })
+})

frontend/src/__tests__/utils/endChat.spec.ts

@@ -0,0 +1,71 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, expect, it } from 'vitest'
+import { canRequestRating, endChatMessage, isEndChatMessage } from '@/utils/endChat'
+
+describe('canRequestRating', () => {
+  it('allows rating on widget channels', () => {
+    expect(canRequestRating('web')).toBe(true)
+    expect(canRequestRating('shopify')).toBe(true)
+    expect(canRequestRating(undefined)).toBe(true)
+  })
+
+  it('refuses rating on external channels that cannot render it', () => {
+    expect(canRequestRating('whatsapp')).toBe(false)
+    expect(canRequestRating('telegram')).toBe(false)
+  })
+})
+
+describe('endChatMessage', () => {
+  it('only asks for a rating where one can be given', () => {
+    expect(endChatMessage('web')).toContain('评分')
+    expect(endChatMessage('whatsapp')).not.toContain('评分')
+  })
+})
+
+describe('isEndChatMessage', () => {
+  it('is true only when attributes.end_chat is set', () => {
+    expect(isEndChatMessage({ attributes: { end_chat: true } })).toBe(true)
+    expect(isEndChatMessage({ attributes: { end_chat: false } })).toBe(false)
+    expect(isEndChatMessage({ attributes: {} })).toBe(false)
+  })
+
+  it('is false for messages with no attributes at all', () => {
+    expect(isEndChatMessage({})).toBe(false)
+    expect(isEndChatMessage(null)).toBe(false)
+    expect(isEndChatMessage(undefined)).toBe(false)
+    expect(isEndChatMessage({ attributes: null })).toBe(false)
+  })
+
+  it('ignores a real session_id — that is what caused the takeover bug', () => {
+    // The takeover notice and form prompts are ordinary conversation messages
+    // that carry a session_id. Treating those as end-chat closed live chats
+    // the moment a human agent joined.
+    const takeoverNotice = {
+      message: 'Arun joined the conversation',
+      message_type: 'system',
+      session_id: '790b1bbc-2772-4d35-beab-68548abb08ad',
+    }
+    const formPrompt = {
+      message_type: 'form',
+      session_id: '790b1bbc-2772-4d35-beab-68548abb08ad',
+    }
+
+    expect(isEndChatMessage(takeoverNotice)).toBe(false)
+    expect(isEndChatMessage(formPrompt)).toBe(false)
+  })
+})

frontend/src/__tests__/utils/knowledgePages.spec.ts

@@ -0,0 +1,111 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect } from 'vitest'
+import { basePageId, groupChunksIntoPages, titleFromId } from '../../utils/knowledgePages'
+import type { KnowledgeContentChunk } from '../../types/knowledge'
+
+describe('basePageId', () => {
+  // These MUST stay aligned with the backend PAGE_ID_EXPR
+  // (backend/app/knowledge/page_editor.py): strip only a trailing `_<number>`
+  // chunk suffix, never a real underscore in the page name.
+  it('strips a trailing numeric chunk suffix', () => {
+    expect(basePageId('https://site.com/docs_1')).toBe('https://site.com/docs')
+    expect(basePageId('https://site.com/docs_12')).toBe('https://site.com/docs')
+  })
+
+  it('keeps a bare page id with no chunk suffix', () => {
+    expect(basePageId('https://site.com/docs')).toBe('https://site.com/docs')
+  })
+
+  it('preserves real underscores in the page name', () => {
+    expect(basePageId('getting_started')).toBe('getting_started')
+    expect(basePageId('getting_started_2')).toBe('getting_started')
+  })
+
+  it('strips a `::n` chunk suffix', () => {
+    expect(basePageId('https://site.com/docs::1')).toBe('https://site.com/docs')
+    expect(basePageId('https://site.com/docs::12')).toBe('https://site.com/docs')
+  })
+
+  it('keeps a page url that itself ends in _n when chunked with ::n', () => {
+    expect(basePageId('https://site.com/post_2::1')).toBe('https://site.com/post_2')
+  })
+
+  it('strips only the last numeric group', () => {
+    expect(basePageId('x_10_3')).toBe('x_10')
+  })
+})
+
+describe('titleFromId', () => {
+  it('uses the last non-empty url/path segment', () => {
+    expect(titleFromId('https://site.com/docs/getting-started')).toBe('getting-started')
+    expect(titleFromId('https://site.com/docs/')).toBe('docs')
+    expect(titleFromId('Product Handbook.pdf#billing')).toBe('Product Handbook.pdf')
+  })
+})
+
+describe('groupChunksIntoPages', () => {
+  const chunk = (
+    id: string,
+    content: string,
+    metadata: Record<string, unknown> = {},
+    created_at: string | null = null,
+  ): KnowledgeContentChunk => ({ id, content, metadata, created_at: created_at ?? undefined })
+
+  it('groups multi-chunk pages and concatenates content in order', () => {
+    const pages = groupChunksIntoPages([
+      chunk('p/a', 'first', { url: 'https://x/a', title: 'Alpha' }, '2024-01-01T00:00:00Z'),
+      chunk('p/a_1', 'second', {}, '2024-01-02T00:00:00Z'),
+      chunk('p/b', 'other', {}, '2024-01-01T00:00:00Z'),
+    ])
+    expect(pages).toHaveLength(2)
+    const a = pages[0]
+    expect(a.page_id).toBe('p/a')
+    expect(a.url).toBe('https://x/a')
+    expect(a.title).toBe('Alpha')
+    expect(a.content).toBe('first\n\nsecond')
+    expect(a.chunk_count).toBe(2)
+    expect(a.word_count).toBe(2)
+    expect(a.chunk_ids).toEqual(['p/a', 'p/a_1'])
+    // updated_at is the latest of the group's chunk timestamps
+    expect(a.updated_at).toBe('2024-01-02T00:00:00Z')
+  })
+
+  it('falls back to id-derived url/title when metadata is missing', () => {
+    const [page] = groupChunksIntoPages([chunk('https://site.com/docs/help', 'body')])
+    expect(page.url).toBe('https://site.com/docs/help')
+    expect(page.title).toBe('help')
+  })
+
+  it('rejoins `::n` chunks verbatim and legacy `_n` chunks with a paragraph break', () => {
+    const verbatim = groupChunksIntoPages([
+      { id: 'https://s.com/p::1', content: 'The plan costs ' },
+      { id: 'https://s.com/p::2', content: '$29 a month.\n' },
+    ])
+    expect(verbatim[0].content).toBe('The plan costs $29 a month.\n')
+
+    const legacy = groupChunksIntoPages([
+      { id: 'doc.pdf_1', content: 'first' },
+      { id: 'doc.pdf_2', content: 'second' },
+    ])
+    expect(legacy[0].content).toBe('first\n\nsecond')
+  })
+
+  it('returns an empty array for no chunks', () => {
+    expect(groupChunksIntoPages([])).toEqual([])
+  })
+})

frontend/src/__tests__/utils/mcp.spec.ts

@@ -0,0 +1,69 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect } from 'vitest'
+import {
+  DEFAULT_MCP_TIMEOUT,
+  MAX_MCP_TIMEOUT,
+  MIN_MCP_TIMEOUT,
+  clampMCPTimeout,
+  linesToRecord,
+  recordToLines,
+} from '@/utils/mcp'
+
+describe('clampMCPTimeout', () => {
+  it('keeps a value the API accepts', () => {
+    expect(clampMCPTimeout(120)).toBe(120)
+  })
+
+  it('pulls an over-range value down to the maximum', () => {
+    // A number input's max doesn't block submission, and the 422 that would
+    // come back carries a validation payload rather than a readable message.
+    expect(clampMCPTimeout(900)).toBe(MAX_MCP_TIMEOUT)
+  })
+
+  it('rounds a fractional value to whole seconds', () => {
+    expect(clampMCPTimeout(45.6)).toBe(46)
+    expect(clampMCPTimeout(0.4)).toBe(MIN_MCP_TIMEOUT)
+  })
+
+  it('falls back to the default when the field is empty or nonsense', () => {
+    expect(clampMCPTimeout(undefined)).toBe(DEFAULT_MCP_TIMEOUT)
+    expect(clampMCPTimeout(null)).toBe(DEFAULT_MCP_TIMEOUT)
+    expect(clampMCPTimeout(NaN)).toBe(DEFAULT_MCP_TIMEOUT)
+    expect(clampMCPTimeout(0)).toBe(DEFAULT_MCP_TIMEOUT)
+    expect(clampMCPTimeout(-5)).toBe(DEFAULT_MCP_TIMEOUT)
+  })
+})
+
+describe('KEY=value line editing', () => {
+  it('round-trips a record through the textarea form', () => {
+    const record = { AWS_REGION: 'us-east-1', AWS_ACCESS_KEY_ID: 'abc' }
+    expect(linesToRecord(recordToLines(record))).toEqual(record)
+  })
+
+  it('keeps a value containing "=" intact', () => {
+    expect(linesToRecord('Authorization=Bearer a=b')).toEqual({ Authorization: 'Bearer a=b' })
+  })
+
+  it('ignores lines without a key', () => {
+    expect(linesToRecord('novalue\n=orphan\nA=1')).toEqual({ A: '1' })
+  })
+
+  it('treats a missing record as empty', () => {
+    expect(recordToLines(undefined)).toBe('')
+  })
+})

frontend/src/__tests__/utils/messageMatch.spec.ts

@@ -0,0 +1,67 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import type { Message } from '@/types/chat'
+import { findMessage, newClientId } from '@/utils/messageMatch'
+
+const msg = (fields: Partial<Message>): Message => ({
+  message_type: 'agent', created_at: '2026-10-11T00:00:00Z', session_id: 's1', ...fields
+})
+
+describe('findMessage', () => {
+  it('matches by row id, client id or channel id', () => {
+    const loaded = msg({ id: 10 })
+    const pending = msg({ client_id: 'c-1' })
+    const wa = msg({ id: 11, external_message_id: 'wamid.X' })
+    const messages = [loaded, pending, wa]
+
+    expect(findMessage(messages, { messageId: 10 })).toBe(loaded)
+    expect(findMessage(messages, { clientId: 'c-1' })).toBe(pending)
+    expect(findMessage(messages, { externalId: 'wamid.X' })).toBe(wa)
+  })
+
+  it('never guesses: an unknown receipt matches nothing', () => {
+    // A failed message (no id yet) and a newer pending one: a receipt for
+    // some other row must not land on either.
+    const failed = msg({ client_id: 'c-1', attributes: { delivery_status: 'failed' } })
+    const pending = msg({ client_id: 'c-2' })
+
+    expect(findMessage([failed, pending], { messageId: 99, externalId: 'wamid.OTHER' })).toBeUndefined()
+  })
+
+  it('ignores empty references', () => {
+    expect(findMessage([msg({})], {})).toBeUndefined()
+    expect(findMessage([msg({})], { clientId: '', externalId: null })).toBeUndefined()
+  })
+})
+
+describe('newClientId', () => {
+  afterEach(() => vi.unstubAllGlobals())
+
+  it('uses randomUUID where the browser has it', () => {
+    vi.stubGlobal('crypto', { randomUUID: () => 'uuid-1' })
+    expect(newClientId()).toBe('uuid-1')
+  })
+
+  it('still works on plain http, where randomUUID does not exist', () => {
+    vi.stubGlobal('crypto', {})
+    const a = newClientId()
+    const b = newClientId()
+    expect(a).toMatch(/^[a-z0-9]+-[a-z0-9]+$/)
+    expect(a).not.toBe(b)
+  })
+})

frontend/src/__tests__/utils/permissions.spec.ts

@@ -0,0 +1,84 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, vi } from 'vitest'
+
+const currentUser = await vi.hoisted(async () => ({ value: null as unknown }))
+
+vi.mock('@/services/user', () => ({
+  userService: { getCurrentUser: () => currentUser.value },
+}))
+
+import { hasPermission, hasAnyPermission, permissionChecks } from '@/utils/permissions'
+import { createPermissionMocks, userWithPermissions } from '../fixtures/permissions'
+
+describe('permission primitives', () => {
+  it('is false when nobody is signed in', () => {
+    currentUser.value = null
+    expect(hasPermission('manage_agents')).toBe(false)
+    expect(hasAnyPermission(['manage_agents'])).toBe(false)
+  })
+
+  it('is false for a user whose role carries no permissions', () => {
+    currentUser.value = { id: '1', role: { id: 1, name: 'Empty' } }
+    expect(hasAnyPermission(['manage_agents'])).toBe(false)
+  })
+
+  // A check that does not bypass gives super_admin an almost-empty sidebar
+  // while the API happily serves every request — the two layers disagreeing is
+  // exactly what produces "the page renders, then 403s".
+  it('grants every check to super_admin', () => {
+    currentUser.value = userWithPermissions(['super_admin'])
+    Object.entries(permissionChecks).forEach(([name, check]) => {
+      expect(check(), name).toBe(true)
+    })
+  })
+
+  it('denies every check to a role with nothing', () => {
+    currentUser.value = userWithPermissions([])
+    Object.entries(permissionChecks).forEach(([name, check]) => {
+      expect(check(), name).toBe(false)
+    })
+  })
+
+  it('grants exactly what a Human Agent should have', () => {
+    currentUser.value = userWithPermissions([
+      'view_assigned_chats',
+      'manage_assigned_chats',
+      'view_unassigned_chats',
+      'view_people',
+    ])
+
+    expect(permissionChecks.canViewChats()).toBe(true)
+    expect(permissionChecks.canViewPeople()).toBe(true)
+    expect(permissionChecks.canManagePeople()).toBe(true)
+    expect(permissionChecks.canTakeOverChats()).toBe(true)
+
+    expect(permissionChecks.canViewAgents()).toBe(false)
+    expect(permissionChecks.canManageUsers()).toBe(false)
+    expect(permissionChecks.canViewSubscription()).toBe(false)
+    expect(permissionChecks.canManageKnowledge()).toBe(false)
+  })
+})
+
+describe('the shared test fixture', () => {
+  // Without this, a check added to the app but not to the fixture returns
+  // undefined in whichever spec mocks permissions next, and that spec fails
+  // somewhere unrelated and confusing.
+  it('mocks every check the app defines', () => {
+    expect(Object.keys(createPermissionMocks()).sort()).toEqual(Object.keys(permissionChecks).sort())
+  })
+})

frontend/src/__tests__/utils/planLimits.spec.ts

@@ -0,0 +1,41 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { afterEach, describe, expect, it } from 'vitest'
+import { subscriptionStorage } from '@/utils/storage'
+
+const storeSubscription = (plan: Record<string, unknown>) =>
+  subscriptionStorage.setCurrentSubscription({ status: 'trial', plan } as never)
+
+describe('subscriptionStorage.getPlanLimits', () => {
+  afterEach(() => localStorage.clear())
+
+  it('keeps an unlimited agent allowance unlimited', () => {
+    // null is "no cap" on the backend; turning it into 0 locked agent creation
+    // for every unlimited plan (found by the e2e enterprise suite).
+    storeSubscription({ max_agents: null })
+    expect(subscriptionStorage.getPlanLimits().maxAgents).toBeNull()
+  })
+
+  it('passes a capped allowance through', () => {
+    storeSubscription({ max_agents: 5 })
+    expect(subscriptionStorage.getPlanLimits().maxAgents).toBe(5)
+  })
+
+  it('allows nothing without a subscription', () => {
+    expect(subscriptionStorage.getPlanLimits().maxAgents).toBe(0)
+  })
+})

frontend/src/__tests__/utils/sanitize.spec.ts

@@ -0,0 +1,146 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, expect, it } from 'vitest'
+import { sanitizeHtml } from '@/utils/sanitize'
+import { renderMarkdown } from '@/webclient/markdown'
+
+// Both the dashboard chat and the embedded widget render model output through
+// sanitizeHtml, so this is the one place an XSS bypass would have to get past.
+// The cases pin the behaviour of the DOMPurify config AND the two global hooks
+// registered in src/utils/sanitize.ts, so a DOMPurify upgrade cannot quietly
+// change what survives.
+
+describe('sanitizeHtml', () => {
+  describe('keeps the formatting a chat answer needs', () => {
+    it('leaves basic markup and tables alone', () => {
+      const html = '<p>Hi <strong>there</strong></p><ul><li>one</li></ul><table><tr><td>x</td></tr></table>'
+      expect(sanitizeHtml(html)).toBe(
+        '<p>Hi <strong>there</strong></p><ul><li>one</li></ul><table><tbody><tr><td>x</td></tr></tbody></table>',
+      )
+    })
+
+    it('keeps https links but forces them to open safely in a new tab', () => {
+      const out = sanitizeHtml('<a href="https://example.com/docs">docs</a>')
+      expect(out).toContain('href="https://example.com/docs"')
+      expect(out).toContain('target="_blank"')
+      expect(out).toContain('rel="noopener noreferrer nofollow"')
+    })
+
+    it('keeps mailto links', () => {
+      expect(sanitizeHtml('<a href="mailto:a@b.co">mail</a>')).toContain('href="mailto:a@b.co"')
+    })
+
+    it('returns an empty string for empty input', () => {
+      expect(sanitizeHtml('')).toBe('')
+    })
+  })
+
+  describe('strips script execution vectors', () => {
+    it.each([
+      ['script tag', '<p>x</p><script>alert(1)</script>'],
+      ['iframe', '<iframe src="https://evil.example"></iframe>'],
+      ['object/embed', '<object data="x"></object><embed src="x">'],
+      ['form controls', '<form action="/x"><input onfocus="alert(1)" autofocus></form>'],
+      ['template', '<template><img src=x onerror=alert(1)></template>'],
+      ['style block', '<style>body{background:url(javascript:alert(1))}</style>'],
+    ])('removes %s', (_label, html) => {
+      const out = sanitizeHtml(html)
+      expect(out).not.toMatch(/<(script|iframe|object|embed|form|input|template|style)/i)
+      expect(out).not.toContain('alert(1)')
+    })
+
+    it('removes every on* event handler attribute', () => {
+      const out = sanitizeHtml('<div onclick="alert(1)" onmouseover="alert(2)" onfoo="alert(3)">x</div>')
+      expect(out).toBe('<div>x</div>')
+    })
+
+    it('removes svg, math and foreignObject subtrees entirely', () => {
+      const out = sanitizeHtml('<p>a</p><svg><foreignObject><script>alert(1)</script></foreignObject></svg><math><mi>x</mi></math>')
+      expect(out).toBe('<p>a</p>')
+    })
+
+    it('removes img, area and map even though they carry no script', () => {
+      const out = sanitizeHtml('<p>a</p><img src="https://x/y.png"><map name="m"><area href="https://x"></map>')
+      expect(out).toBe('<p>a</p>')
+    })
+  })
+
+  describe('strips dangerous URLs from links', () => {
+    it.each([
+      ['javascript:', 'javascript:alert(1)'],
+      ['mixed-case javascript:', 'JaVaScRiPt:alert(1)'],
+      ['url-encoded javascript:', 'javascript%3Aalert(1)'],
+      ['data:text/html', 'data:text/html,<script>alert(1)</script>'],
+      ['vbscript:', 'vbscript:msgbox(1)'],
+      ['file:', 'file:///etc/passwd'],
+      ['ftp (not in the anchor allow-list)', 'ftp://example.com/x'],
+      ['protocol-relative', '//evil.example/x'],
+      ['relative path', '/login'],
+    ])('drops the href for %s', (_label, href) => {
+      const out = sanitizeHtml(`<a href="${href}">x</a>`)
+      expect(out).not.toContain('href=')
+      expect(out).toContain('>x</a>')
+    })
+  })
+
+  describe('strips dangerous inline styles', () => {
+    it.each([
+      'expression(alert(1))',
+      'behavior:url(x.htc)',
+      '-moz-binding:url(x.xml)',
+      'background:url(javascript:alert(1))',
+    ])('drops a style containing %s', (style) => {
+      expect(sanitizeHtml(`<span style="${style}">x</span>`)).not.toContain('style=')
+    })
+  })
+
+  it('does not let a mutation-XSS payload survive re-parsing', () => {
+    // Classic mXSS shape: a noscript boundary that turns into markup once the
+    // sanitised string is parsed again by the browser. The payload text may
+    // legitimately survive inside a quoted attribute; what must not survive is
+    // an element that executes after the second parse.
+    const out = sanitizeHtml('<noscript><p title="</noscript><img src=x onerror=alert(1)>">')
+    const reparsed = new DOMParser().parseFromString(out, 'text/html')
+    expect(reparsed.querySelector('noscript, img, [onerror]')).toBeNull()
+  })
+})
+
+describe('renderMarkdown', () => {
+  it('turns markdown into sanitised HTML with hardened links', () => {
+    const out = renderMarkdown('**bold** and [docs](https://example.com)')
+    expect(out).toContain('<strong>bold</strong>')
+    expect(out).toContain('href="https://example.com"')
+    expect(out).toContain('rel="noopener noreferrer nofollow"')
+  })
+
+  it('drops javascript links written in markdown', () => {
+    const out = renderMarkdown('[click](javascript:alert(1))')
+    expect(out).not.toContain('javascript:')
+    expect(out).not.toContain('href=')
+    expect(out).toContain('click')
+  })
+
+  it('strips raw HTML script vectors embedded in markdown', () => {
+    const out = renderMarkdown('hello <img src=x onerror=alert(1)> world')
+    expect(out).not.toContain('onerror')
+    expect(out).toContain('hello')
+  })
+
+  it('renders nothing for empty or missing text', () => {
+    expect(renderMarkdown('')).toBe('')
+  })
+})

frontend/src/__tests__/utils/swOauthCallback.spec.ts

@@ -0,0 +1,73 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect } from 'vitest'
+
+import { isDeniedNavigation } from '@/pwa/navigationDenylist'
+import { META_OAUTH_CALLBACK_PATH } from '@/utils/metaSdk'
+
+/**
+ * Workbox matches the denylist against `pathname + search`, so every case here
+ * is written the way the service worker actually sees it — with the query
+ * string attached. An earlier fix anchored on `$` and silently matched nothing
+ * once Meta appended ?code=.
+ */
+describe('service worker navigation denylist', () => {
+  describe('OAuth callbacks are never answered with the SPA shell', () => {
+    it('denies the Meta callback carrying the code and state Meta appends', () => {
+      expect(
+        isDeniedNavigation(`${META_OAUTH_CALLBACK_PATH}?code=AQLe9lcDvOy&state=abc-123`),
+      ).toBe(true)
+    })
+
+    it('denies it bare too', () => {
+      expect(isDeniedNavigation(META_OAUTH_CALLBACK_PATH)).toBe(true)
+    })
+  })
+
+  describe('real SPA routes still get the shell', () => {
+    it.each([
+      '/',
+      '/settings/integrations',
+      '/conversations',
+      '/ai-agents',
+      '/people',
+      '/settings/integrations?tab=messenger',
+    ])('allows %s', (path) => {
+      expect(isDeniedNavigation(path)).toBe(false)
+    })
+
+    it('is not fooled by a dot inside the query string', () => {
+      // The extension rule must look at the path, not the whole string.
+      expect(isDeniedNavigation('/people?search=ada.lovelace%40example.com')).toBe(false)
+    })
+  })
+
+  describe('the pre-existing exclusions still hold', () => {
+    it.each(['/api/v1/users/login', '/widget/abc', '/webclient/chattermate.min.js', '/shopify/inbox'])(
+      'denies %s',
+      (path) => {
+        expect(isDeniedNavigation(path)).toBe(true)
+      },
+    )
+  })
+
+  it('covers any other standalone file in public/, not just the ones we listed', () => {
+    // The point of the extension rule: nothing new has to be enumerated.
+    expect(isDeniedNavigation('/robots.txt')).toBe(true)
+    expect(isDeniedNavigation('/some-future-callback.html?code=x')).toBe(true)
+  })
+})

frontend/src/__tests__/utils/text.spec.ts

@@ -0,0 +1,47 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect } from 'vitest'
+import { getInitials } from '@/utils/text'
+
+describe('getInitials', () => {
+  it('takes the first letter of the first two words', () => {
+    expect(getInitials('John Doe')).toBe('JD')
+    expect(getInitials('Maya Chen Rodriguez')).toBe('MC')
+    expect(getInitials('Cher')).toBe('C')
+  })
+
+  // Hyphens are part of the name, not a word boundary — splitting on them
+  // would drop the surname ("Jean-Luc Picard" → "JL" instead of "JP")
+  it('keeps hyphenated and apostrophised names intact', () => {
+    expect(getInitials('Jean-Luc Picard')).toBe('JP')
+    expect(getInitials("Anne-Marie O'Brien")).toBe('AO')
+  })
+
+  it('derives initials from an email local part', () => {
+    expect(getInitials('john.doe@example.com')).toBe('JD')
+    expect(getInitials('arun_r@example.com')).toBe('AR')
+    expect(getInitials('support@example.com')).toBe('S')
+  })
+
+  it('falls back when there is nothing to work with', () => {
+    expect(getInitials('')).toBe('?')
+    expect(getInitials(null)).toBe('?')
+    expect(getInitials(undefined)).toBe('?')
+    expect(getInitials('   ')).toBe('?')
+    expect(getInitials('', '')).toBe('')
+  })
+})

frontend/src/__tests__/utils/timezones.spec.ts

@@ -0,0 +1,46 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, expect, it, vi } from 'vitest'
+
+vi.mock('timezone-select-js', () => ({
+  listTz: () => [
+    { value: 'Europe/London', label: '(GMT+00:00) London', included: ['Europe/London', 'GB'] },
+    { value: 'Asia/Kolkata', label: '(GMT+05:30) Kolkata', included: ['Asia/Kolkata', 'Asia/Calcutta'] },
+  ],
+  clientTz: () => 'UTC',
+}))
+
+import { defaultTimezone, timezoneOptions } from '@/utils/timezones'
+
+describe('timezones', () => {
+  it('offers UTC, which the library list lacks', () => {
+    expect(timezoneOptions()[0].value).toBe('UTC')
+  })
+
+  it('defaults a UTC browser to UTC rather than leaving the select empty', () => {
+    // Found by the e2e suite: a CI browser in UTC could not submit first-run setup.
+    expect(defaultTimezone()).toBe('UTC')
+  })
+
+  it('maps an alias to the listed zone', () => {
+    expect(defaultTimezone(timezoneOptions(), 'Asia/Calcutta')).toBe('Asia/Kolkata')
+  })
+
+  it('falls back to UTC for a zone the list does not know', () => {
+    expect(defaultTimezone(timezoneOptions(), 'Mars/Olympus_Mons')).toBe('UTC')
+  })
+})

frontend/src/__tests__/utils/uploadUrl.spec.ts

@@ -0,0 +1,129 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, afterEach } from 'vitest'
+import { buildAttachmentUrl, buildUploadUrl } from '@/utils/avatars'
+import { resolveUploadUrl } from '@/config/api'
+
+const API_BASE = 'https://self.hosted.example/api/v1'
+
+describe('buildUploadUrl', () => {
+  it('does not repeat the /api/v1 prefix the stored path already carries', () => {
+    // The regression this guards: store_upload returns "/api/v1/uploads/..."
+    // and callers used to prepend an API base that also ends in /api/v1.
+    expect(buildUploadUrl('/api/v1/uploads/agents/org/a.png', API_BASE)).toBe(
+      'https://self.hosted.example/api/v1/uploads/agents/org/a.png',
+    )
+  })
+
+  it('handles an API base with a trailing slash', () => {
+    expect(buildUploadUrl('/api/v1/uploads/x.png', 'https://h.example/api/v1/')).toBe(
+      'https://h.example/api/v1/uploads/x.png',
+    )
+  })
+
+  it('leaves paths that do not carry the prefix alone', () => {
+    expect(buildUploadUrl('/uploads/x.png', API_BASE)).toBe(
+      'https://self.hosted.example/uploads/x.png',
+    )
+  })
+
+  it('inserts the missing separator for a relative path', () => {
+    expect(buildUploadUrl('uploads/x.png', API_BASE)).toBe(
+      'https://self.hosted.example/uploads/x.png',
+    )
+  })
+
+  it('passes absolute S3/CDN URLs through untouched', () => {
+    const signed = 'https://bucket.s3.amazonaws.com/agents/a.png?X-Amz-Signature=abc'
+    expect(buildUploadUrl(signed, API_BASE)).toBe(signed)
+  })
+
+  it('passes data URIs and blob previews through untouched', () => {
+    expect(buildUploadUrl('data:image/svg+xml;base64,PHN2Zz48L3N2Zz4=', API_BASE)).toBe(
+      'data:image/svg+xml;base64,PHN2Zz48L3N2Zz4=',
+    )
+    expect(buildUploadUrl('blob:https://h.example/abc', API_BASE)).toBe('blob:https://h.example/abc')
+  })
+
+  it('returns an empty string for empty input', () => {
+    expect(buildUploadUrl(null, API_BASE)).toBe('')
+    expect(buildUploadUrl(undefined, API_BASE)).toBe('')
+    expect(buildUploadUrl('', API_BASE)).toBe('')
+  })
+
+  it('tolerates an API base that is not suffixed with /api/v1', () => {
+    expect(buildUploadUrl('/api/v1/uploads/x.png', 'https://h.example')).toBe(
+      'https://h.example/api/v1/uploads/x.png',
+    )
+  })
+})
+
+describe('buildAttachmentUrl', () => {
+  const ORG = 'bab82aab-d095-46f8-bf16-da638671bcf4'
+
+  it('resolves a signed local link against the API origin, query intact', () => {
+    const signed = `/api/v1/files/local/chat_attachments/${ORG}/a.png?exp=1700000000&sig=abc`
+    expect(buildAttachmentUrl(signed, API_BASE)).toBe(`https://self.hosted.example${signed}`)
+  })
+
+  it('sends an unsigned stored path through the authenticated download endpoint', () => {
+    expect(buildAttachmentUrl(`/uploads/chat_attachments/${ORG}/a.png`, API_BASE)).toBe(
+      `https://self.hosted.example/api/v1/files/download/chat_attachments/${ORG}/a.png`,
+    )
+    expect(buildAttachmentUrl(`uploads/chat_attachments/${ORG}/a.png`, `${API_BASE}/`)).toBe(
+      `https://self.hosted.example/api/v1/files/download/chat_attachments/${ORG}/a.png`,
+    )
+  })
+
+  it('keeps an existing download path from repeating the /api/v1 prefix', () => {
+    expect(buildAttachmentUrl(`/api/v1/files/download/chat_attachments/${ORG}/a.png`, API_BASE)).toBe(
+      `https://self.hosted.example/api/v1/files/download/chat_attachments/${ORG}/a.png`,
+    )
+  })
+
+  it('passes presigned S3 URLs and blob previews through untouched', () => {
+    const presigned = 'https://bucket.s3.amazonaws.com/chat_attachments/a.png?X-Amz-Signature=abc'
+    expect(buildAttachmentUrl(presigned, API_BASE)).toBe(presigned)
+    expect(buildAttachmentUrl('blob:https://h.example/abc', API_BASE)).toBe('blob:https://h.example/abc')
+  })
+
+  it('returns an empty string for empty input', () => {
+    expect(buildAttachmentUrl(null, API_BASE)).toBe('')
+    expect(buildAttachmentUrl('', API_BASE)).toBe('')
+  })
+})
+
+describe('resolveUploadUrl', () => {
+  afterEach(() => {
+    delete (window as unknown as { APP_CONFIG?: unknown }).APP_CONFIG
+  })
+
+  it('resolves against the runtime config, not the build-time env', () => {
+    // The published image bakes import.meta.env.VITE_API_URL as undefined;
+    // window.APP_CONFIG is the only source that is correct at runtime.
+    ;(window as unknown as { APP_CONFIG: Record<string, string> }).APP_CONFIG = {
+      API_URL: 'https://runtime.example/api/v1',
+    }
+    expect(resolveUploadUrl('/api/v1/uploads/agents/org/a.png')).toBe(
+      'https://runtime.example/api/v1/uploads/agents/org/a.png',
+    )
+  })
+
+  it('never emits an "undefined" path segment', () => {
+    expect(resolveUploadUrl('/api/v1/uploads/a.png')).not.toContain('undefined')
+  })
+})

frontend/src/__tests__/utils/validators.spec.ts

@@ -0,0 +1,101 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect } from 'vitest'
+import {
+  validatePassword,
+  validateDomain,
+  validateEmail,
+  validateName,
+  validateOrgName
+} from '../../utils/validators'
+
+describe('validatePassword', () => {
+  it('returns correct score for weak password', () => {
+    const result = validatePassword('weak')
+    expect(result.score).toBe(1) // has lowercase only
+    expect(result.hasMinLength).toBe(false)
+    expect(result.hasLowerCase).toBe(true)
+    expect(result.hasUpperCase).toBe(false)
+    expect(result.hasNumber).toBe(false)
+    expect(result.hasSpecialChar).toBe(false)
+  })
+
+  it('returns correct score for strong password', () => {
+    const result = validatePassword('StrongP@ss123')
+    expect(result.score).toBe(5) // has all requirements
+    expect(result.hasMinLength).toBe(true)
+    expect(result.hasLowerCase).toBe(true)
+    expect(result.hasUpperCase).toBe(true)
+    expect(result.hasNumber).toBe(true)
+    expect(result.hasSpecialChar).toBe(true)
+  })
+})
+
+describe('validateDomain', () => {
+  it('validates correct domains', () => {
+    expect(validateDomain('example.com')).toBe(true)
+    expect(validateDomain('sub.example.com')).toBe(true)
+    expect(validateDomain('sub-domain.example.co.uk')).toBe(true)
+  })
+
+  it('rejects invalid domains', () => {
+    expect(validateDomain('invalid')).toBe(false)
+    expect(validateDomain('invalid@domain')).toBe(false)
+    expect(validateDomain('invalid..')).toBe(false)
+  })
+})
+
+describe('validateEmail', () => {
+  it('validates correct email addresses', () => {
+    expect(validateEmail('user@example.com')).toBe(true)
+    expect(validateEmail('user.name+tag@example.co.uk')).toBe(true)
+  })
+
+  it('rejects invalid email addresses', () => {
+    expect(validateEmail('invalid')).toBe(false)
+    expect(validateEmail('invalid@')).toBe(false)
+    expect(validateEmail('@invalid.com')).toBe(false)
+  })
+})
+
+describe('validateName', () => {
+  it('validates correct names', () => {
+    expect(validateName('John')).toBe(true)
+    expect(validateName('John Doe')).toBe(true)
+    expect(validateName('Mary-Jane')).toBe(true)
+  })
+
+  it('rejects invalid names', () => {
+    expect(validateName('a')).toBe(false) // too short
+    expect(validateName('J@hn')).toBe(false) // special characters
+    expect(validateName('a'.repeat(101))).toBe(false) // too long
+  })
+})
+
+describe('validateOrgName', () => {
+  it('validates correct organization names', () => {
+    expect(validateOrgName('Acme Corp')).toBe(true)
+    expect(validateOrgName('Johnson & Johnson')).toBe(true)
+    expect(validateOrgName('Tech-Co Inc.')).toBe(true)
+  })
+
+  it('rejects invalid organization names', () => {
+    expect(validateOrgName('a')).toBe(false) // too short
+    expect(validateOrgName('Corp@')).toBe(false) // invalid special characters
+    expect(validateOrgName('a'.repeat(101))).toBe(false) // too long
+  })
+}) 

frontend/src/__tests__/utils/whatsappLanguages.spec.ts

@@ -0,0 +1,86 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect } from 'vitest'
+import {
+  WHATSAPP_LANGUAGES,
+  DEFAULT_LANGUAGE,
+  languageLabel,
+} from '../../utils/whatsappLanguages'
+
+describe('WHATSAPP_LANGUAGES', () => {
+  it('carries the full list Meta publishes', () => {
+    // Meta listed 111 at transcription time. A merge that silently drops half
+    // the list would otherwise pass every other assertion here.
+    expect(WHATSAPP_LANGUAGES.length).toBe(111)
+  })
+
+  it('has no duplicate codes', () => {
+    const codes = WHATSAPP_LANGUAGES.map((l) => l.code)
+    expect(new Set(codes).size).toBe(codes.length)
+  })
+
+  it('has no duplicate labels', () => {
+    const labels = WHATSAPP_LANGUAGES.map((l) => l.label)
+    expect(new Set(labels).size).toBe(labels.length)
+  })
+
+  it('uses codes in the shapes Meta actually publishes', () => {
+    // Deliberately loose on length: `fil`/`prs_AF` are 3-letter languages and
+    // `es_CRI` a 3-letter region, so a strict xx / xx_YY rule rejects valid codes.
+    for (const { code } of WHATSAPP_LANGUAGES) {
+      expect(code, code).toMatch(/^[a-z]{2,3}(_[A-Z]{2,3})?$/)
+    }
+  })
+
+  it('keeps the irregular codes Meta actually uses', () => {
+    const codes = WHATSAPP_LANGUAGES.map((l) => l.code)
+    // Each of these breaks a naive assumption about the code format.
+    expect(codes).toEqual(
+      expect.arrayContaining(['fil', 'nb', 'prs_AF', 'es_CRI', 'zh_HK', 'si_LK', 'ky_KG', 'rw_RW']),
+    )
+  })
+
+  it('is sorted by label so the picker reads alphabetically', () => {
+    const labels = WHATSAPP_LANGUAGES.map((l) => l.label)
+    expect(labels).toEqual([...labels].sort((a, b) => a.localeCompare(b)))
+  })
+
+  it('has a non-empty label for every entry', () => {
+    for (const { code, label } of WHATSAPP_LANGUAGES) {
+      expect(label.trim(), code).not.toBe('')
+    }
+  })
+})
+
+describe('DEFAULT_LANGUAGE', () => {
+  it('is selectable in the picker', () => {
+    expect(WHATSAPP_LANGUAGES.some((l) => l.code === DEFAULT_LANGUAGE)).toBe(true)
+  })
+})
+
+describe('languageLabel', () => {
+  it('names a known code', () => {
+    expect(languageLabel('en_US')).toBe('English (US)')
+    expect(languageLabel('pt_BR')).toBe('Portuguese (BR)')
+  })
+
+  it('falls back to the raw code', () => {
+    // A template created elsewhere may use a language Meta added after this
+    // list was written — showing the code beats showing nothing.
+    expect(languageLabel('xx_YY')).toBe('xx_YY')
+  })
+})

frontend/src/__tests__/utils/whatsappTemplates.spec.ts

@@ -0,0 +1,297 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect } from 'vitest'
+import type { WhatsAppTemplate } from '../../services/channels'
+import {
+  isSendable,
+  isAuthentication,
+  hasUnsupportedParameters,
+  templateBody,
+  templatePreviewText,
+  templateVariables,
+  previewTemplate,
+  isTemplateComplete,
+  buildAuthComponents,
+  buildTemplateComponents,
+  templateKey,
+  isSameTemplate,
+  AUTH_DESCRIPTION,
+} from '../../utils/whatsappTemplates'
+
+const template = (text: string, extra: Partial<WhatsAppTemplate> = {}): WhatsAppTemplate => ({
+  name: 'order_update',
+  status: 'APPROVED',
+  components: [
+    { type: 'HEADER', text: 'Ignore me' },
+    { type: 'BODY', text },
+  ],
+  ...extra,
+})
+
+describe('isSendable', () => {
+  it('allows only approved templates', () => {
+    expect(isSendable(template('hi'))).toBe(true)
+    expect(isSendable(template('hi', { status: 'PENDING' }))).toBe(false)
+    expect(isSendable(template('hi', { status: 'REJECTED' }))).toBe(false)
+  })
+
+  it('rejects an approved template whose variables we cannot fill', () => {
+    const headerVariable = template('Hi there', {
+      components: [
+        { type: 'HEADER', text: 'Order {{1}}' },
+        { type: 'BODY', text: 'Hi there' },
+      ],
+    })
+    // Offering this would guarantee a rejected send: only body params are sent.
+    expect(isSendable(headerVariable)).toBe(false)
+  })
+})
+
+describe('hasUnsupportedParameters', () => {
+  it('is true for a placeholder in a URL button, which lives in url not text', () => {
+    // The BUTTONS component has no `text` at all, so a text-only scan misses it
+    // and the send would omit the button parameter.
+    expect(hasUnsupportedParameters(template('Hi', {
+      components: [
+        { type: 'BODY', text: 'Hi' },
+        { type: 'BUTTONS', buttons: [{ type: 'URL', text: 'Track', url: 'https://x.com/{{1}}' }] },
+      ],
+    }))).toBe(true)
+  })
+
+  it('is false for a static URL button', () => {
+    expect(hasUnsupportedParameters(template('Hi', {
+      components: [
+        { type: 'BODY', text: 'Hi' },
+        { type: 'BUTTONS', buttons: [{ type: 'URL', text: 'Shop', url: 'https://x.com/shop' }] },
+      ],
+    }))).toBe(false)
+  })
+
+  it('is true for a media header, which needs a parameter but has no text', () => {
+    expect(hasUnsupportedParameters(template('Hi', {
+      components: [{ type: 'HEADER', format: 'IMAGE' }, { type: 'BODY', text: 'Hi' }],
+    }))).toBe(true)
+  })
+
+  it('is false for a plain text header', () => {
+    expect(hasUnsupportedParameters(template('Hi', {
+      components: [{ type: 'HEADER', format: 'TEXT', text: 'Welcome' }, { type: 'BODY', text: 'Hi' }],
+    }))).toBe(false)
+  })
+
+  it('is false when only the body has placeholders', () => {
+    expect(hasUnsupportedParameters(template('Hi {{1}}'))).toBe(false)
+  })
+
+  it('is true for a placeholder in a header', () => {
+    expect(hasUnsupportedParameters(template('Hi', {
+      components: [{ type: 'HEADER', text: '{{1}}' }, { type: 'BODY', text: 'Hi' }],
+    }))).toBe(true)
+  })
+
+  it('ignores non-body components without placeholders', () => {
+    expect(hasUnsupportedParameters(template('Hi {{1}}', {
+      components: [{ type: 'FOOTER', text: 'Reply STOP' }, { type: 'BODY', text: 'Hi {{1}}' }],
+    }))).toBe(false)
+  })
+})
+
+describe('templateBody', () => {
+  it('reads the body, not the header', () => {
+    expect(templateBody(template('Hello there'))).toBe('Hello there')
+  })
+
+  it('returns empty string when there is no body', () => {
+    expect(templateBody({ name: 'x' })).toBe('')
+    expect(templateBody({ name: 'x', components: [{ type: 'HEADER', text: 'h' }] })).toBe('')
+  })
+})
+
+describe('templateVariables', () => {
+  it('finds placeholders in ascending order', () => {
+    expect(templateVariables(template('Hi {{2}}, order {{1}} shipped'))).toEqual([1, 2])
+  })
+
+  it('de-duplicates a placeholder used twice', () => {
+    expect(templateVariables(template('Hi {{1}}, bye {{1}}'))).toEqual([1])
+  })
+
+  it('returns nothing for a template without placeholders', () => {
+    expect(templateVariables(template('No variables here'))).toEqual([])
+  })
+
+  it('handles non-contiguous numbering', () => {
+    expect(templateVariables(template('{{1}} and {{3}}'))).toEqual([1, 3])
+  })
+})
+
+describe('previewTemplate', () => {
+  it('substitutes filled values and leaves blanks as placeholders', () => {
+    const result = previewTemplate(template('Hi {{1}}, order {{2}} shipped'), { 1: 'Ada' })
+    expect(result).toBe('Hi Ada, order {{2}} shipped')
+  })
+
+  it('replaces every occurrence of a repeated placeholder', () => {
+    expect(previewTemplate(template('{{1}} {{1}}'), { 1: 'x' })).toBe('x x')
+  })
+})
+
+describe('isTemplateComplete', () => {
+  it('requires every placeholder to have a non-blank value', () => {
+    const t = template('Hi {{1}}, order {{2}}')
+    expect(isTemplateComplete(t, { 1: 'Ada', 2: 'A12' })).toBe(true)
+    expect(isTemplateComplete(t, { 1: 'Ada' })).toBe(false)
+    expect(isTemplateComplete(t, { 1: 'Ada', 2: '   ' })).toBe(false)
+  })
+
+  it('is complete when there are no placeholders', () => {
+    expect(isTemplateComplete(template('static'), {})).toBe(true)
+  })
+})
+
+describe('buildTemplateComponents', () => {
+  it('sends parameters in placeholder order, not fill order', () => {
+    const result = buildTemplateComponents(template('Hi {{2}}, order {{1}}'), { 2: 'Ada', 1: 'A12' })
+    expect(result).toEqual([
+      { type: 'body', parameters: [{ type: 'text', text: 'A12' }, { type: 'text', text: 'Ada' }] },
+    ])
+  })
+
+  it('sends no components when the template has no placeholders', () => {
+    expect(buildTemplateComponents(template('static'), {})).toBeUndefined()
+  })
+
+  it('trims values', () => {
+    const result = buildTemplateComponents(template('Hi {{1}}'), { 1: '  Ada  ' })
+    expect(result?.[0].parameters).toEqual([{ type: 'text', text: 'Ada' }])
+  })
+})
+
+/**
+ * Authentication templates carry no body text — Meta owns the copy and the code
+ * is supplied at send time. Everything below guards the consequences of that.
+ */
+const authTemplate = (extra: Partial<WhatsAppTemplate> = {}): WhatsAppTemplate => ({
+  name: 'verification_code',
+  status: 'APPROVED',
+  category: 'AUTHENTICATION',
+  components: [
+    { type: 'BODY', add_security_recommendation: true },
+    { type: 'FOOTER', code_expiration_minutes: 5 },
+    { type: 'BUTTONS', buttons: [{ type: 'OTP', otp_type: 'COPY_CODE', text: 'Copy Code' }] },
+  ],
+  ...extra,
+})
+
+describe('isAuthentication', () => {
+  it('is decided by category, not by shape', () => {
+    expect(isAuthentication(authTemplate())).toBe(true)
+    expect(isAuthentication(template('hi', { category: 'UTILITY' }))).toBe(false)
+    expect(isAuthentication(template('hi'))).toBe(false)
+  })
+})
+
+describe('authentication templates', () => {
+  it('stays sendable despite having no body text', () => {
+    // Its placeholders are Meta's own, so the "variable outside the body"
+    // rule must not filter it out of the picker.
+    expect(hasUnsupportedParameters(authTemplate())).toBe(false)
+    expect(isSendable(authTemplate())).toBe(true)
+  })
+
+  it('asks for exactly one value — the verification code', () => {
+    expect(templateVariables(authTemplate())).toEqual([1])
+  })
+
+  it('is incomplete until the code is given', () => {
+    expect(isTemplateComplete(authTemplate(), {})).toBe(false)
+    expect(isTemplateComplete(authTemplate(), { 1: '  ' })).toBe(false)
+    expect(isTemplateComplete(authTemplate(), { 1: '123456' })).toBe(true)
+  })
+
+  it('describes the copy rather than fabricating it', () => {
+    // Meta writes and localises the real sentence — Spanish puts the code
+    // mid-sentence — so anything spelled out here would be wrong for most
+    // languages. The create form fetches the real rendering from Meta.
+    expect(templatePreviewText(authTemplate())).toBe(AUTH_DESCRIPTION)
+    expect(previewTemplate(authTemplate(), { 1: '123456' })).toContain('123456')
+    expect(previewTemplate(authTemplate(), { 1: '123456' })).not.toContain(
+      'is your verification code',
+    )
+  })
+
+  it('sends the code in both the body and the copy-code button', () => {
+    // Body-only leaves the button copying nothing; Meta requires both.
+    expect(buildTemplateComponents(authTemplate(), { 1: '123456' })).toEqual([
+      { type: 'body', parameters: [{ type: 'text', text: '123456' }] },
+      {
+        type: 'button',
+        sub_type: 'url',
+        index: '0',
+        parameters: [{ type: 'text', text: '123456' }],
+      },
+    ])
+  })
+
+  it('never sends undefined components, which would omit the code entirely', () => {
+    expect(buildTemplateComponents(authTemplate(), { 1: '123456' })).toBeDefined()
+  })
+})
+
+describe('buildAuthComponents', () => {
+  it('trims the code', () => {
+    const [body, button] = buildAuthComponents('  123456  ')
+    expect(body.parameters).toEqual([{ type: 'text', text: '123456' }])
+    expect(button.parameters).toEqual([{ type: 'text', text: '123456' }])
+  })
+
+  it('addresses the OTP button as sub_type url at index 0', () => {
+    const [, button] = buildAuthComponents('1')
+    expect(button.sub_type).toBe('url')
+    expect(button.index).toBe('0')
+  })
+})
+
+
+describe('template identity', () => {
+  // WhatsApp has no multilingual template: name+language identify one, so the
+  // same template in three languages is three rows off the same Graph edge.
+  const en: WhatsAppTemplate = { name: 'otp', language: 'en_US', category: 'AUTHENTICATION' }
+  const es: WhatsAppTemplate = { name: 'otp', language: 'es_ES', category: 'AUTHENTICATION' }
+
+  it('distinguishes same-named templates in different languages', () => {
+    expect(templateKey(en)).not.toBe(templateKey(es))
+    expect(isSameTemplate(en, es)).toBe(false)
+  })
+
+  it('treats the same name and language as the same template', () => {
+    expect(isSameTemplate(en, { ...en })).toBe(true)
+  })
+
+  it('is false for nullish operands rather than throwing', () => {
+    expect(isSameTemplate(null, en)).toBe(false)
+    expect(isSameTemplate(en, undefined)).toBe(false)
+    expect(isSameTemplate(null, null)).toBe(false)
+  })
+
+  it('does not collide a missing language with an empty one', () => {
+    // Both degrade to the same key; that is acceptable because Graph always
+    // returns a language, but pin it so a change here is deliberate.
+    expect(templateKey({ name: 'x' })).toBe(templateKey({ name: 'x', language: '' }))
+  })
+})

frontend/src/__tests__/utils/widgetEmbed.spec.ts

@@ -0,0 +1,70 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { afterEach, beforeEach, describe, expect, it } from 'vitest'
+
+import { buildWidgetEmbed } from '@/utils/widgetEmbed'
+// The snippet's exact text, pinned so other code that builds it can match it.
+import golden from '../fixtures/widget-snippet.txt?raw'
+
+/**
+ * The embed snippet runs on the CUSTOMER's own site, where window.APP_CONFIG is
+ * absent — so it must carry this install's backend URL as window.chattermateBaseUrl
+ * and load the loader from this frontend's own origin. Both are resolved at
+ * generation time from runtime config, so a self-hosted install needs no rebuild.
+ */
+describe('buildWidgetEmbed', () => {
+  // The loader is served by this frontend, so its origin is wherever the dashboard
+  // runs (jsdom reports http://localhost:3000) — NOT the configured API host.
+  const ORIGIN = window.location.origin
+  const API_URL = 'https://support.example.com/api/v1'
+
+  beforeEach(() => {
+    // @ts-expect-error test shim for runtime config
+    window.APP_CONFIG = { API_URL, WS_URL: 'wss://support.example.com' }
+  })
+
+  afterEach(() => {
+    // @ts-expect-error cleanup test shim
+    delete window.APP_CONFIG
+  })
+
+  it('bakes chattermateBaseUrl from the runtime API url (simple variant)', () => {
+    const code = buildWidgetEmbed('w-123')
+    expect(code).toContain(`window.chattermateBaseUrl = '${API_URL}'`)
+    expect(code).toContain(`window.chattermateId = 'w-123'`)
+    expect(code).toContain(`${ORIGIN}/webclient/chattermate.min.js`)
+  })
+
+  it('bakes chattermateBaseUrl in the token-auth variant too', () => {
+    const code = buildWidgetEmbed('w-123', true)
+    expect(code).toContain(`window.chattermateBaseUrl = '${API_URL}'`)
+    expect(code).toContain(`${ORIGIN}/webclient/chattermate.min.js`)
+  })
+
+  it('never hardcodes the vendor cloud when self-host config is present', () => {
+    const code = buildWidgetEmbed('w-123')
+    expect(code).not.toContain('api.chattermate.chat')
+  })
+
+  it('matches the pinned snippet', () => {
+    const expected = golden
+      .replace('{widget_id}', 'w-123')
+      .replace('{api_url}', API_URL)
+      .replace('{loader_origin}', ORIGIN)
+    expect(buildWidgetEmbed('w-123')).toBe(expected)
+  })
+})

frontend/src/__tests__/utils/widgetTheme.spec.ts

@@ -0,0 +1,66 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, expect, it } from 'vitest'
+
+import { themeCssVars } from '@/webclient/widget-theme'
+
+// --cm-presence: the accent when readable on the card, the muted colour when
+// the two are both light or both dark (e.g. lime on the white Sunrise header).
+describe('themeCssVars --cm-presence', () => {
+    it('falls back to muted on a light preset whose accent is light', () => {
+        // Sunrise: white card, coral accent — both light.
+        const vars = themeCssVars(undefined)
+        expect(vars['--cm-presence']).toBe(vars['--cm-muted'])
+        expect(vars['--cm-presence']).not.toBe(vars['--cm-accent'])
+    })
+
+    it('keeps the accent on a dark preset with a light accent', () => {
+        // Terminal: near-black card, lime accent.
+        const vars = themeCssVars('TERMINAL')
+        expect(vars['--cm-presence']).toBe('#C9F24E')
+        expect(vars['--cm-presence']).toBe(vars['--cm-accent'])
+    })
+
+    it('falls back to muted for a light custom accent on a light custom background', () => {
+        const vars = themeCssVars('TERMINAL', {
+            chat_background_color: '#FFFFFF',
+            accent_color: '#C9F24E',
+        })
+        expect(vars['--cm-presence']).toBe(vars['--cm-muted'])
+    })
+
+    it('keeps a light custom accent on a dark custom background', () => {
+        const vars = themeCssVars(undefined, {
+            chat_background_color: '#111111',
+            accent_color: '#C9F24E',
+        })
+        expect(vars['--cm-presence']).toBe('#C9F24E')
+    })
+
+    it('keeps a dark custom accent on a light card', () => {
+        const vars = themeCssVars(undefined, { accent_color: '#7A2E1F' })
+        expect(vars['--cm-presence']).toBe('#7A2E1F')
+    })
+
+    it('falls back to muted for a dark custom accent on a dark background', () => {
+        const vars = themeCssVars(undefined, {
+            chat_background_color: '#111111',
+            accent_color: '#222222',
+        })
+        expect(vars['--cm-presence']).toBe(vars['--cm-muted'])
+    })
+})

frontend/src/__tests__/views/403.spec.ts

@@ -0,0 +1,108 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, beforeEach, vi } from 'vitest'
+import { mount, VueWrapper, flushPromises } from '@vue/test-utils'
+import { createRouter, createWebHistory } from 'vue-router'
+import { createPinia, setActivePinia } from 'pinia'
+import ForbiddenView from '../../views/403.vue'
+
+// Mock the DashboardLayout component
+vi.mock('@/layouts/DashboardLayout.vue', () => ({
+  default: {
+    name: 'DashboardLayout',
+    template: '<div class="dashboard-layout"><slot /></div>'
+  }
+}))
+
+describe('403 View', () => {
+  let wrapper: VueWrapper
+  let router: any
+
+  beforeEach(async () => {
+    // Create a fresh pinia instance
+    setActivePinia(createPinia())
+
+    // Create router instance
+    router = createRouter({
+      history: createWebHistory(),
+      routes: [
+        { path: '/', name: 'home', component: { template: '<div>Home</div>' } },
+        { path: '/403', name: 'forbidden', component: ForbiddenView }
+      ]
+    })
+
+    // Initialize router
+    await router.push('/403')
+    await router.isReady()
+
+    // Mount component with proper stubs and mocks
+    wrapper = mount(ForbiddenView, {
+      global: {
+        plugins: [router],
+        stubs: {
+          RouterLink: {
+            template: '<a :href="to" class="router-link"><slot /></a>',
+            props: ['to']
+          },
+          DashboardLayout: {
+            template: '<div class="dashboard-layout"><slot /></div>'
+          }
+        }
+      }
+    })
+  })
+
+  it('renders properly', () => {
+    expect(wrapper.find('.unauthorized').exists()).toBe(true)
+    expect(wrapper.find('h1').text()).toBe('Access Denied')
+    expect(wrapper.find('p').text()).toBe('You don\'t have permission to access this page.')
+  })
+
+  it('is wrapped in DashboardLayout', () => {
+    const dashboardLayout = wrapper.find('.dashboard-layout')
+    expect(dashboardLayout.exists()).toBe(true)
+  })
+
+  // Not '/': that redirects to the landing route, which for someone who was
+  // just denied is frequently another denial. With no permissions the floor is
+  // /settings/user, which requires none.
+  it('links somewhere the denied user can actually open', () => {
+    const backLink = wrapper.find('.back-link')
+    expect(backLink.exists()).toBe(true)
+    expect(backLink.attributes('href')).toBe('/settings/user')
+    expect(backLink.attributes('href')).not.toBe('/')
+  })
+
+  it('applies correct styling', () => {
+    const container = wrapper.find('.unauthorized')
+    expect(container.classes()).toContain('unauthorized')
+    
+    const backLink = wrapper.find('.back-link')
+    expect(backLink.classes()).toContain('back-link')
+  })
+
+  it('navigates to home when clicking the back link', async () => {
+    const backLink = wrapper.find('.back-link')
+    await backLink.trigger('click')
+    
+    // Simulate router navigation
+    await router.push('/')
+    await flushPromises()
+    
+    expect(router.currentRoute.value.path).toBe('/')
+  })
+}) 

frontend/src/__tests__/views/settings/AIConfigSettings.spec.ts

@@ -0,0 +1,96 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, beforeEach, vi } from 'vitest'
+import { mount, VueWrapper } from '@vue/test-utils'
+import { createPinia, setActivePinia } from 'pinia'
+import AIConfigSettings from '../../../views/settings/AIConfigSettings.vue'
+
+// Mock the DashboardLayout component
+vi.mock('@/layouts/DashboardLayout.vue', () => ({
+  default: {
+    name: 'DashboardLayout',
+    template: '<div class="dashboard-layout"><slot /></div>'
+  }
+}))
+
+// Mock the AISetup component
+vi.mock('@/components/ai/AISetup.vue', () => ({
+  default: {
+    name: 'AISetup',
+    template: '<div class="ai-setup"></div>',
+    emits: ['ai-setup-complete']
+  }
+}))
+
+describe('AIConfigSettings', () => {
+  let wrapper: VueWrapper
+
+  beforeEach(() => {
+    // Create a fresh pinia instance
+    setActivePinia(createPinia())
+
+    // Mount component with proper stubs
+    wrapper = mount(AIConfigSettings, {
+      global: {
+        stubs: {
+          DashboardLayout: {
+            template: '<div class="dashboard-layout"><slot /></div>'
+          }
+        }
+      }
+    })
+  })
+
+  it('renders properly', () => {
+    expect(wrapper.find('.dashboard-container').exists()).toBe(true)
+    expect(wrapper.find('.settings-section').exists()).toBe(true)
+  })
+
+  it('is wrapped in DashboardLayout', () => {
+    const dashboardLayout = wrapper.find('.dashboard-layout')
+    expect(dashboardLayout.exists()).toBe(true)
+  })
+
+  it('contains AISetup component', () => {
+    const aiSetup = wrapper.findComponent({ name: 'AISetup' })
+    expect(aiSetup.exists()).toBe(true)
+  })
+
+  it('applies correct styling', () => {
+    // Check container styling
+    const container = wrapper.find('.dashboard-container')
+    expect(container.classes()).toContain('dashboard-container')
+    
+    // Check settings section styling
+    const settingsSection = wrapper.find('.settings-section')
+    expect(settingsSection.classes()).toContain('settings-section')
+  })
+
+  it('maintains proper layout structure', () => {
+    // The page title now lives in the topbar (DashboardLayout), so the in-page
+    // structure is simply: container > settings-section > AISetup.
+    const container = wrapper.find('.dashboard-container')
+    const settingsSection = container.find('.settings-section')
+
+    expect(container.exists()).toBe(true)
+    expect(settingsSection.exists()).toBe(true)
+
+    // Verify AISetup is inside settings section
+    const aiSetup = settingsSection.findComponent({ name: 'AISetup' })
+    expect(aiSetup.exists()).toBe(true)
+  })
+})

frontend/src/__tests__/views/settings/OrganizationSettings.spec.ts

@@ -0,0 +1,94 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { describe, it, expect, beforeEach, vi } from 'vitest'
+import { mount, VueWrapper } from '@vue/test-utils'
+import { createPinia, setActivePinia } from 'pinia'
+import OrganizationSettings from '../../../views/settings/OrganizationSettings.vue'
+
+// Mock the DashboardLayout component
+vi.mock('@/layouts/DashboardLayout.vue', () => ({
+  default: {
+    name: 'DashboardLayout',
+    template: '<div class="dashboard-layout"><slot /></div>'
+  }
+}))
+
+// Mock the OrganizationSettingsSetup component
+vi.mock('@/components/organization/Organizations.vue', () => ({
+  default: {
+    name: 'OrganizationSettingsSetup',
+    template: '<div class="organization-settings-setup"></div>'
+  }
+}))
+
+describe('OrganizationSettings', () => {
+  let wrapper: VueWrapper
+
+  beforeEach(() => {
+    // Create a fresh pinia instance
+    setActivePinia(createPinia())
+
+    // Mount component with proper stubs
+    wrapper = mount(OrganizationSettings, {
+      global: {
+        stubs: {
+          DashboardLayout: {
+            template: '<div class="dashboard-layout"><slot /></div>'
+          }
+        }
+      }
+    })
+  })
+
+  it('renders properly', () => {
+    expect(wrapper.find('.dashboard-container').exists()).toBe(true)
+    expect(wrapper.find('.settings-section').exists()).toBe(true)
+  })
+
+  it('is wrapped in DashboardLayout', () => {
+    const dashboardLayout = wrapper.find('.dashboard-layout')
+    expect(dashboardLayout.exists()).toBe(true)
+  })
+
+  it('contains OrganizationSettingsSetup component', () => {
+    const orgSettings = wrapper.findComponent({ name: 'OrganizationSettingsSetup' })
+    expect(orgSettings.exists()).toBe(true)
+  })
+
+  it('applies correct styling', () => {
+    // Check container styling
+    const container = wrapper.find('.dashboard-container')
+    expect(container.classes()).toContain('dashboard-container')
+    
+    // Check settings section styling
+    const settingsSection = wrapper.find('.settings-section')
+    expect(settingsSection.classes()).toContain('settings-section')
+  })
+
+  it('maintains proper layout structure', () => {
+    // Check nested structure
+    const container = wrapper.find('.dashboard-container')
+    const settingsSection = container.find('.settings-section')
+    
+    expect(container.exists()).toBe(true)
+    expect(settingsSection.exists()).toBe(true)
+    
+    // Verify OrganizationSettingsSetup is inside settings section
+    const orgSettings = settingsSection.findComponent({ name: 'OrganizationSettingsSetup' })
+    expect(orgSettings.exists()).toBe(true)
+  })
+}) 

frontend/src/__tests__/webclient/chattermateIdentity.spec.ts

@@ -0,0 +1,267 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+
+/**
+ * Keeping an identified visitor identified, from the embed loader's side.
+ *
+ * A signed-in visitor who starts a new chat must stay signed in, the host page has to
+ * be told when a conversation is created, and re-authenticating the same visitor must
+ * not cost them the chat they are in.
+ */
+describe('ChatterMate identity continuity', () => {
+  const WIDGET_ID = 'w-123'
+  const BASE_URL = 'https://api.example.com/api/v1'
+
+  let fetchMock: ReturnType<typeof vi.fn>
+
+  const html = '<!DOCTYPE html><html><body>widget</body></html>'
+  const flush = () => new Promise((resolve) => setTimeout(resolve, 0))
+
+  /** A token for `subject`, shaped like the ones /generate-token issues. */
+  function tokenFor(subject: string, nonce = '1') {
+    return `header.${btoa(JSON.stringify({ sub: subject, nonce }))}.signature`
+  }
+
+  async function loadLoader() {
+    vi.resetModules()
+    await import('@/webclient/chattermate.js')
+    await flush()
+  }
+
+  function frameWindow(): Window {
+    const frame = document.querySelector('.chattermate-iframe') as HTMLIFrameElement
+    return frame.contentWindow as Window
+  }
+
+  /** A message as the widget frame would post it. */
+  function fromFrame(data: Record<string, unknown>) {
+    window.dispatchEvent(new MessageEvent('message', { data, source: frameWindow() }))
+  }
+
+  beforeEach(() => {
+    document.body.innerHTML = ''
+    document.head.innerHTML = ''
+    localStorage.clear()
+    // @ts-expect-error loader globals set by the embed snippet
+    window.chattermateId = WIDGET_ID
+    // @ts-expect-error loader globals set by the embed snippet
+    window.chattermateBaseUrl = BASE_URL
+    // @ts-expect-error a previous test's identity must not leak in
+    window.chattermateToken = undefined
+    // @ts-expect-error config from a previous test must not leak in
+    window.chattermateConfig = undefined
+    fetchMock = vi.fn(() => Promise.resolve({ ok: true, status: 200, text: () => Promise.resolve(html) }))
+    vi.stubGlobal('fetch', fetchMock)
+  })
+
+  afterEach(() => {
+    vi.unstubAllGlobals()
+    // @ts-expect-error cleanup loader globals
+    delete window.ChatterMate
+  })
+
+  it('reports a new conversation to the host page', async () => {
+    await loadLoader()
+    const created = vi.fn()
+    ;(window as any).ChatterMate.on('chatCreated', created)
+
+    fromFrame({ type: 'CHAT_SESSION', sessionId: 's-1', authenticated: true, created: true })
+
+    expect(created).toHaveBeenCalledWith({ sessionId: 's-1', authenticated: true })
+  })
+
+  it('says when the new conversation is no longer the identified visitor', async () => {
+    await loadLoader()
+    const created = vi.fn()
+    ;(window as any).ChatterMate.on('chatCreated', created)
+
+    fromFrame({ type: 'CHAT_SESSION', sessionId: 's-2', authenticated: false, created: true })
+
+    expect(created).toHaveBeenCalledWith({ sessionId: 's-2', authenticated: false })
+  })
+
+  it('stays quiet when the frame merely reconnects to the conversation in progress', async () => {
+    await loadLoader()
+    const created = vi.fn()
+    ;(window as any).ChatterMate.on('chatCreated', created)
+
+    fromFrame({ type: 'CHAT_SESSION', sessionId: 's-3', authenticated: true, created: false })
+
+    expect(created).not.toHaveBeenCalled()
+  })
+
+  it('asks the host for a token when the identity expires, without rebuilding the frame', async () => {
+    const replacement = tokenFor('cust-1', 'fresh')
+    ;(window as any).chattermateConfig = { tokenProvider: () => Promise.resolve(replacement) }
+    await loadLoader()
+    const expired = vi.fn()
+    ;(window as any).ChatterMate.on('identityExpired', expired)
+    const post = vi.spyOn(frameWindow(), 'postMessage')
+    const framesBefore = document.querySelector('.chattermate-iframe')
+
+    fromFrame({ type: 'IDENTITY_EXPIRED' })
+    await flush()
+
+    expect(expired).toHaveBeenCalled()
+    expect(post).toHaveBeenCalledWith({ type: 'TOKEN_REFRESH', token: replacement }, '*')
+    expect(localStorage.getItem('ctid')).toBe(replacement)
+    // The visitor is looking at a conversation; fixing the token must not take it away.
+    expect(document.querySelector('.chattermate-iframe')).toBe(framesBefore)
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+  })
+
+  it('lets the frame carry on anonymously when the host has no tokenProvider', async () => {
+    await loadLoader()
+    const expired = vi.fn()
+    ;(window as any).ChatterMate.on('identityExpired', expired)
+    const post = vi.spyOn(frameWindow(), 'postMessage')
+
+    fromFrame({ type: 'IDENTITY_EXPIRED' })
+    await flush()
+
+    expect(expired).toHaveBeenCalled()
+    // Nothing can replace the identity, so the widget must not sit there stuck.
+    expect(post).toHaveBeenCalledWith({ type: 'IDENTITY_UNAVAILABLE' }, '*')
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+  })
+
+  it('survives a tokenProvider that throws', async () => {
+    ;(window as any).chattermateConfig = {
+      tokenProvider: () => Promise.reject(new Error('no session')),
+    }
+    await loadLoader()
+    vi.spyOn(console, 'error').mockImplementation(() => {})
+    const post = vi.spyOn(frameWindow(), 'postMessage')
+
+    fromFrame({ type: 'IDENTITY_EXPIRED' })
+    await flush()
+
+    expect(document.querySelector('.chattermate-iframe')).not.toBeNull()
+    expect(post).toHaveBeenCalledWith({ type: 'IDENTITY_UNAVAILABLE' }, '*')
+  })
+
+  it('asks the host only once per load, so a bad token cannot loop', async () => {
+    const stale = tokenFor('cust-1', 'stale')
+    const provider = vi.fn().mockResolvedValue(stale)
+    ;(window as any).chattermateConfig = { tokenProvider: provider }
+    await loadLoader()
+
+    fromFrame({ type: 'IDENTITY_EXPIRED' })
+    await flush()
+    fromFrame({ type: 'IDENTITY_EXPIRED' })
+    await flush()
+
+    expect(provider).toHaveBeenCalledTimes(1)
+  })
+
+  it('falls back to anonymous when a token-required widget rejects a lapsed token', async () => {
+    ;(window as any).chattermateToken = tokenFor('cust-1')
+    fetchMock
+      .mockResolvedValueOnce({
+        ok: false,
+        status: 401,
+        json: () => Promise.resolve({ detail: { code: 'identity_expired', message: 'gone' } }),
+      })
+      .mockResolvedValue({ ok: true, status: 200, text: () => Promise.resolve(html) })
+
+    await loadLoader()
+    await flush()
+
+    // Exactly one retry, without the dead token, and it renders rather than looping.
+    expect(fetchMock).toHaveBeenCalledTimes(2)
+    expect((fetchMock.mock.calls[1][1] as RequestInit).headers).toEqual({})
+    expect(localStorage.getItem('ctid')).toBeNull()
+    expect(document.querySelector('.chattermate-iframe')).not.toBeNull()
+  })
+
+  it('shows the configuration error when a token-required widget cannot load at all', async () => {
+    ;(window as any).chattermateToken = tokenFor('cust-1')
+    fetchMock
+      .mockResolvedValueOnce({
+        ok: false,
+        status: 401,
+        json: () => Promise.resolve({ detail: { code: 'identity_expired', message: 'gone' } }),
+      })
+      .mockResolvedValue({
+        ok: false,
+        status: 401,
+        json: () => Promise.resolve({ detail: 'Token must be obtained from /generate-token' }),
+      })
+
+    await loadLoader()
+    await flush()
+
+    expect(fetchMock).toHaveBeenCalledTimes(2)
+    expect(document.querySelector('.chattermate-error-ui')).not.toBeNull()
+  })
+
+  it('swaps a fresher token for the same visitor in place', async () => {
+    const first = tokenFor('cust-1', 'a')
+    ;(window as any).chattermateToken = first
+    await loadLoader()
+    const post = vi.spyOn(frameWindow(), 'postMessage')
+    const frameBefore = document.querySelector('.chattermate-iframe')
+    const rotated = tokenFor('cust-1', 'b')
+
+    ;(window as any).ChatterMate.identify(rotated)
+    await flush()
+
+    expect(post).toHaveBeenCalledWith({ type: 'TOKEN_REFRESH', token: rotated }, '*')
+    // Same person, so the conversation stays: no second document fetch, same frame.
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+    expect(document.querySelector('.chattermate-iframe')).toBe(frameBefore)
+    expect(localStorage.getItem('ctid')).toBe(rotated)
+  })
+
+  it('still rebuilds the frame for a different visitor', async () => {
+    ;(window as any).chattermateToken = tokenFor('cust-1')
+    await loadLoader()
+    const frameBefore = document.querySelector('.chattermate-iframe')
+
+    ;(window as any).ChatterMate.identify(tokenFor('cust-2'))
+    await flush()
+
+    expect(document.querySelector('.chattermate-iframe')).not.toBe(frameBefore)
+  })
+
+  it('closes the conversation it leaves behind on logout', async () => {
+    const token = tokenFor('cust-1')
+    ;(window as any).chattermateToken = token
+    await loadLoader()
+    fromFrame({ type: 'CHAT_SESSION', sessionId: 's-9', authenticated: true, created: true })
+
+    ;(window as any).ChatterMate.logout()
+    await flush()
+
+    const endChatCall = fetchMock.mock.calls.find((call) => String(call[0]).includes('/end-chat'))
+    expect(endChatCall).toBeDefined()
+    expect(String(endChatCall![0])).toContain('session_id=s-9')
+    // Closed as the visitor who owned it, not as the anonymous one replacing them.
+    expect((endChatCall![1] as RequestInit).headers).toEqual({ Authorization: `Bearer ${token}` })
+  })
+
+  it('does not try to close a conversation it never had', async () => {
+    ;(window as any).chattermateToken = tokenFor('cust-1')
+    await loadLoader()
+
+    ;(window as any).ChatterMate.logout()
+    await flush()
+
+    expect(fetchMock.mock.calls.some((call) => String(call[0]).includes('/end-chat'))).toBe(false)
+  })
+})

frontend/src/__tests__/webclient/chattermateLifecycle.spec.ts

@@ -0,0 +1,272 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+
+/**
+ * The loader's identity and lifecycle API. A single-page app logs in, logs out and
+ * unmounts without ever reloading the page, so the widget has to swap identities —
+ * and disappear entirely — in place. The token is baked into the document the
+ * backend renders, which means a new identity is always a new frame fetched with a
+ * new Authorization header.
+ */
+describe('ChatterMate identity and lifecycle API', () => {
+  const WIDGET_ID = 'w-123'
+  const BASE_URL = 'https://api.example.com/api/v1'
+
+  let fetchMock: ReturnType<typeof vi.fn>
+
+  // The widget document the backend would render; its contents don't matter here.
+  const html = '<!DOCTYPE html><html><body>widget</body></html>'
+
+  function okResponse() {
+    return { ok: true, status: 200, text: () => Promise.resolve(html) }
+  }
+
+  // Let the loader's fetch().then() chain run to completion.
+  const flush = () => new Promise((resolve) => setTimeout(resolve, 0))
+
+  async function loadLoader() {
+    vi.resetModules()
+    await import('@/webclient/chattermate.js')
+    await flush()
+  }
+
+  function authHeaders(callIndex: number) {
+    return (fetchMock.mock.calls[callIndex][1] as RequestInit).headers as Record<string, string>
+  }
+
+  beforeEach(() => {
+    document.body.innerHTML = ''
+    document.head.innerHTML = ''
+    localStorage.clear()
+    // @ts-expect-error loader globals set by the embed snippet
+    window.chattermateId = WIDGET_ID
+    // @ts-expect-error loader globals set by the embed snippet
+    window.chattermateBaseUrl = BASE_URL
+    // @ts-expect-error a previous test's identity must not leak in
+    window.chattermateToken = undefined
+    fetchMock = vi.fn(() => Promise.resolve(okResponse()))
+    vi.stubGlobal('fetch', fetchMock)
+  })
+
+  afterEach(() => {
+    vi.unstubAllGlobals()
+    // @ts-expect-error cleanup loader globals
+    delete window.ChatterMate
+  })
+
+  it('exposes identify, logout, reload and destroy', async () => {
+    await loadLoader()
+    const api = (window as any).ChatterMate
+    expect(typeof api.identify).toBe('function')
+    expect(typeof api.logout).toBe('function')
+    expect(typeof api.reload).toBe('function')
+    expect(typeof api.destroy).toBe('function')
+  })
+
+  it('loads anonymously when no token is stored', async () => {
+    await loadLoader()
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+    expect(authHeaders(0).Authorization).toBeUndefined()
+  })
+
+  it('identify() reloads the frame with the new token', async () => {
+    await loadLoader()
+    const first = document.querySelector('.chattermate-iframe')
+    expect(first).not.toBeNull()
+
+    ;(window as any).ChatterMate.identify('tok-1')
+    await flush()
+
+    expect(fetchMock).toHaveBeenCalledTimes(2)
+    expect(authHeaders(1).Authorization).toBe('Bearer tok-1')
+    expect(localStorage.getItem('ctid')).toBe('tok-1')
+    // The old frame — the previous visitor's conversation — is gone, not hidden.
+    const frames = document.querySelectorAll('.chattermate-iframe')
+    expect(frames).toHaveLength(1)
+    expect(frames[0]).not.toBe(first)
+  })
+
+  it('identify() with the token already in use is a no-op', async () => {
+    await loadLoader()
+    ;(window as any).ChatterMate.identify('tok-1')
+    await flush()
+    ;(window as any).ChatterMate.identify('tok-1')
+    await flush()
+
+    expect(fetchMock).toHaveBeenCalledTimes(2)
+  })
+
+  it('identify() ignores an empty or non-string token', async () => {
+    await loadLoader()
+    ;(window as any).ChatterMate.identify('')
+    ;(window as any).ChatterMate.identify('undefined')
+    ;(window as any).ChatterMate.identify(null)
+    await flush()
+
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+    expect(localStorage.getItem('ctid')).toBeNull()
+  })
+
+  it('logout() clears the identity and reloads anonymously', async () => {
+    await loadLoader()
+    ;(window as any).ChatterMate.identify('tok-1')
+    await flush()
+
+    ;(window as any).ChatterMate.logout()
+    await flush()
+
+    expect(fetchMock).toHaveBeenCalledTimes(3)
+    expect(authHeaders(2).Authorization).toBeUndefined()
+    expect(localStorage.getItem('ctid')).toBeNull()
+    expect((window as any).chattermateToken).toBeNull()
+  })
+
+  it('closes an open widget when the identity changes', async () => {
+    await loadLoader()
+    const api = (window as any).ChatterMate
+    api.open()
+    expect(api.isOpen()).toBe(true)
+
+    api.logout()
+    await flush()
+
+    expect(api.isOpen()).toBe(false)
+  })
+
+  it('reload() rebuilds the frame with the current token', async () => {
+    await loadLoader()
+    ;(window as any).ChatterMate.reload()
+    await flush()
+
+    expect(fetchMock).toHaveBeenCalledTimes(2)
+    expect(document.querySelectorAll('.chattermate-iframe')).toHaveLength(1)
+  })
+
+  it('keeps a single frame message listener across reloads', async () => {
+    await loadLoader()
+    ;(window as any).ChatterMate.reload()
+    await flush()
+
+    const frame = document.querySelector('.chattermate-iframe') as HTMLIFrameElement
+    const post = vi.spyOn(frame.contentWindow as Window, 'postMessage')
+    window.dispatchEvent(
+      new MessageEvent('message', {
+        data: { type: 'TOKEN_UPDATE', token: 'tok-frame' },
+        source: frame.contentWindow,
+      })
+    )
+
+    // Registering the handler per load would confirm the token once per load.
+    expect(post).toHaveBeenCalledTimes(1)
+    expect(post.mock.calls[0][0]).toEqual({ type: 'TOKEN_RECEIVED', token: 'tok-frame' })
+    expect(localStorage.getItem('ctid')).toBe('tok-frame')
+  })
+
+  it('destroy() leaves nothing of the widget on the page', async () => {
+    await loadLoader()
+    ;(window as any).ChatterMate.destroy()
+
+    expect(document.getElementById('chattermate-button')).toBeNull()
+    expect(document.getElementById('chattermate-container')).toBeNull()
+    expect(document.getElementById('chattermate-backdrop')).toBeNull()
+    expect(document.getElementById('chattermate-mobile-close')).toBeNull()
+    expect(document.getElementById('chattermate-mobile-topbar')).toBeNull()
+    expect(document.getElementById('chattermate-styles')).toBeNull()
+    expect(document.querySelector('.chattermate-iframe')).toBeNull()
+  })
+
+  it('ignores the destroyed frame and queues nothing after destroy()', async () => {
+    await loadLoader()
+    const frame = document.querySelector('.chattermate-iframe') as HTMLIFrameElement
+    const frameWindow = frame.contentWindow
+    const api = (window as any).ChatterMate
+
+    api.destroy()
+    // The frame is gone, so its late messages must not reach the loader.
+    window.dispatchEvent(
+      new MessageEvent('message', {
+        data: { type: 'TOKEN_UPDATE', token: 'tok-late' },
+        source: frameWindow,
+      })
+    )
+    // Calls against a destroyed widget are dropped, not queued for a later rebuild.
+    api.open()
+
+    expect(localStorage.getItem('ctid')).toBeNull()
+    expect(api.isOpen()).toBe(false)
+
+    api.reload()
+    await flush()
+    expect(api.isOpen()).toBe(false)
+  })
+
+  it('reload() brings a destroyed widget back', async () => {
+    await loadLoader()
+    ;(window as any).ChatterMate.destroy()
+    ;(window as any).ChatterMate.reload()
+    await flush()
+
+    expect(fetchMock).toHaveBeenCalledTimes(2)
+    const button = document.getElementById('chattermate-button')
+    expect(button).not.toBeNull()
+    expect(document.querySelectorAll('.chattermate-iframe')).toHaveLength(1)
+
+    // The rebuilt launcher starts hidden and needs its own reveal — the reveal
+    // state has to be reset by destroy(), or it stays invisible forever.
+    expect(button?.classList.contains('chattermate-pending')).toBe(true)
+    const frame = document.querySelector('.chattermate-iframe') as HTMLIFrameElement
+    window.dispatchEvent(
+      new MessageEvent('message', {
+        data: { type: 'CUSTOMIZATION_UPDATE', data: { chat_bubble_color: '#123456' } },
+        source: frame.contentWindow,
+      })
+    )
+    expect(button?.classList.contains('chattermate-pending')).toBe(false)
+  })
+
+  it('identify() does not resurrect a destroyed widget', async () => {
+    await loadLoader()
+    ;(window as any).ChatterMate.destroy()
+    ;(window as any).ChatterMate.identify('tok-1')
+    await flush()
+
+    expect(fetchMock).toHaveBeenCalledTimes(1)
+    expect(document.getElementById('chattermate-button')).toBeNull()
+    // The identity is still recorded, so a later reload() runs as that visitor.
+    expect(localStorage.getItem('ctid')).toBe('tok-1')
+  })
+
+  it('drops a response that a later identity change superseded', async () => {
+    let resolveSlow: (value: unknown) => void = () => {}
+    fetchMock.mockImplementationOnce(() => new Promise((resolve) => { resolveSlow = resolve }))
+
+    await loadLoader()
+    expect(document.querySelector('.chattermate-iframe')).toBeNull()
+
+    ;(window as any).ChatterMate.identify('tok-1')
+    await flush()
+
+    // The anonymous load finally lands — it must not overwrite the identified frame.
+    resolveSlow(okResponse())
+    await flush()
+
+    const frames = document.querySelectorAll('.chattermate-iframe')
+    expect(frames).toHaveLength(1)
+    expect(authHeaders(1).Authorization).toBe('Bearer tok-1')
+  })
+})

frontend/src/__tests__/webclient/hostBridge.spec.ts

@@ -0,0 +1,107 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { hostOrigin, postToHost, resetHostOrigin } from '@/webclient/host-bridge'
+
+/**
+ * The widget's messages to the embedding page carry the visitor's conversation token,
+ * so they are addressed to a specific origin rather than broadcast. The widget must
+ * still reach a loader it cannot name, though - being unable to talk to the host is
+ * worse than the broadcast this replaces.
+ */
+describe('host-bridge', () => {
+  let post: ReturnType<typeof vi.fn>
+
+  /** Stand in for the embedding page: framed, with the given parent origin. */
+  function embeddedIn(parentOrigin: string | null, { referrer = '', ancestors = [] as string[] } = {}) {
+    post = vi.fn()
+    const parent = {
+      postMessage: post,
+      get location() {
+        if (parentOrigin === null) throw new DOMException('cross-origin', 'SecurityError')
+        return { origin: parentOrigin }
+      },
+    }
+    vi.stubGlobal('window', {
+      ...window,
+      parent,
+      location: { origin: 'null', ancestorOrigins: ancestors },
+    })
+    vi.stubGlobal('document', { ...document, referrer })
+  }
+
+  beforeEach(() => resetHostOrigin())
+
+  afterEach(() => {
+    vi.unstubAllGlobals()
+    resetHostOrigin()
+  })
+
+  it('addresses the srcdoc frame’s same-origin parent', () => {
+    embeddedIn('https://shop.example')
+
+    postToHost({ type: 'TOKEN_UPDATE', token: 'tok' })
+
+    expect(post).toHaveBeenCalledWith({ type: 'TOKEN_UPDATE', token: 'tok' }, 'https://shop.example')
+  })
+
+  it('falls back to the ancestor origin when the parent is cross-origin', () => {
+    embeddedIn(null, { ancestors: ['https://ancestor.example'] })
+
+    expect(hostOrigin()).toBe('https://ancestor.example')
+  })
+
+  it('falls back to the referrer when there are no ancestor origins', () => {
+    embeddedIn(null, { referrer: 'https://referrer.example/support/page?q=1' })
+
+    expect(hostOrigin()).toBe('https://referrer.example')
+  })
+
+  it('broadcasts rather than going silent when the host cannot be named', () => {
+    embeddedIn(null)
+
+    // A widget that cannot reach its loader is broken; "*" is what shipped before.
+    expect(hostOrigin()).toBe('*')
+  })
+
+  it('ignores an opaque parent origin', () => {
+    embeddedIn('null', { referrer: 'https://referrer.example/' })
+
+    expect(hostOrigin()).toBe('https://referrer.example')
+  })
+
+  it('uses its own origin when the widget is not framed at all', () => {
+    // The dashboard preview renders the widget inline, so parent === window.
+    post = vi.fn()
+    const fake: any = { location: { origin: 'https://app.chattermate.chat' }, postMessage: post }
+    fake.parent = fake
+    vi.stubGlobal('window', fake)
+
+    expect(hostOrigin()).toBe('https://app.chattermate.chat')
+  })
+
+  it('resolves the origin once and reuses it', () => {
+    embeddedIn('https://shop.example')
+    const spy = vi.spyOn(window.parent, 'location', 'get')
+
+    hostOrigin()
+    hostOrigin()
+    postToHost({ type: 'UNREAD_COUNT', count: 1 })
+
+    expect(spy).toHaveBeenCalledTimes(1)
+  })
+})

frontend/src/__tests__/webclient/widgetComposer.spec.ts

@@ -0,0 +1,188 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { mount } from '@vue/test-utils'
+import { ref } from 'vue'
+
+/**
+ * The composer while the assistant is answering.
+ *
+ * Disabling an input blurs it, and nothing hands the focus back — so gating the
+ * field on "no reply in flight" cost the visitor their cursor after every single
+ * message, and they had to click the box again to keep typing (#316).
+ */
+
+const sendMessage = vi.fn()
+
+const socket = {
+    messages: ref<any[]>([]),
+    loading: ref(false),
+    errorMessage: ref(''),
+    showError: ref(false),
+    loadingHistory: ref(false),
+    hasStartedChat: ref(true),
+    connectionStatus: ref('connected'),
+    humanAgent: ref({}),
+    currentForm: ref(null),
+    currentSessionId: ref('session-1'),
+    refusal: ref(null)
+}
+
+vi.mock('@/composables/useWidgetSocket', () => ({
+    useWidgetSocket: () => ({
+        ...socket,
+        sendMessage,
+        sendFileAttachments: vi.fn(),
+        endChat: vi.fn(),
+        loadChatHistory: vi.fn(),
+        connect: vi.fn().mockResolvedValue(true),
+        reconnect: vi.fn(),
+        cleanup: vi.fn(),
+        onTakeover: vi.fn(),
+        onSessionState: vi.fn(),
+        submitRating: vi.fn(),
+        submitForm: vi.fn(),
+        getWorkflowState: vi.fn(),
+        proceedWorkflow: vi.fn(),
+        onWorkflowState: vi.fn(),
+        onWorkflowProceeded: vi.fn(),
+        setToken: vi.fn(),
+        setWidgetId: vi.fn()
+    })
+}))
+
+describe('the composer while a reply is in flight', () => {
+    let WidgetBuilder: any
+
+    beforeEach(async () => {
+        sendMessage.mockClear()
+        socket.loading.value = false
+        socket.hasStartedChat.value = true
+        socket.connectionStatus.value = 'connected'
+        socket.messages.value = []
+
+        ;(window as any).__INITIAL_DATA__ = {
+            widgetId: 'w-1',
+            agentName: 'Ada',
+            customization: {},
+            customerId: 'c-1',
+            customer: {},
+            initialToken: 'tok-1'
+        }
+        vi.stubGlobal('fetch', vi.fn().mockResolvedValue({
+            ok: true,
+            status: 200,
+            json: async () => ({ agent: { name: 'Ada' } })
+        }))
+
+        vi.resetModules()
+        WidgetBuilder = (await import('@/webclient/WidgetBuilder.vue')).default
+    })
+
+    afterEach(() => {
+        vi.unstubAllGlobals()
+    })
+
+    const composer = (wrapper: any) =>
+        wrapper.find('input.welcome-message-field, .message-input input')
+
+    it('keeps the field typable while the assistant is answering', async () => {
+        const wrapper = mount(WidgetBuilder, { props: { widgetId: 'w-1', token: 'tok-1' } })
+
+        expect(composer(wrapper).attributes('disabled')).toBeUndefined()
+
+        socket.loading.value = true
+        await wrapper.vm.$nextTick()
+
+        // The moment this becomes `disabled`, the browser drops the cursor.
+        expect(composer(wrapper).attributes('disabled')).toBeUndefined()
+
+        wrapper.unmount()
+    })
+
+    it('still refuses typing when the socket is not connected', async () => {
+        const wrapper = mount(WidgetBuilder, { props: { widgetId: 'w-1', token: 'tok-1' } })
+
+        socket.connectionStatus.value = 'connecting'
+        await wrapper.vm.$nextTick()
+
+        expect(composer(wrapper).attributes('disabled')).toBeDefined()
+
+        wrapper.unmount()
+    })
+
+    it('holds a message typed mid-reply and sends it when the reply lands', async () => {
+        const wrapper = mount(WidgetBuilder, { props: { widgetId: 'w-1', token: 'tok-1' } })
+
+        socket.loading.value = true
+        await wrapper.vm.$nextTick()
+
+        const field = composer(wrapper)
+        await field.setValue('and one more thing')
+        await field.trigger('keypress', { key: 'Enter' })
+
+        // Sending now would start a second agent run on the same conversation.
+        expect(sendMessage).not.toHaveBeenCalled()
+
+        socket.loading.value = false
+        await wrapper.vm.$nextTick()
+        await wrapper.vm.$nextTick()
+
+        // ...and it must not be lost either.
+        expect(sendMessage).toHaveBeenCalledWith(
+            'and one more thing', expect.anything(), expect.anything()
+        )
+
+        wrapper.unmount()
+    })
+
+    it('does not carry a queued message into the next conversation', async () => {
+        const wrapper = mount(WidgetBuilder, { props: { widgetId: 'w-1', token: 'tok-1' } })
+
+        socket.loading.value = true
+        await wrapper.vm.$nextTick()
+
+        const field = composer(wrapper)
+        await field.setValue('meant for the chat I just closed')
+        await field.trigger('keypress', { key: 'Enter' })
+
+        // Ending the chat clears the transcript and stops the typing indicator,
+        // which lands on the same `loading` change the queue waits for.
+        socket.hasStartedChat.value = false
+        socket.messages.value = []
+        socket.loading.value = false
+        await wrapper.vm.$nextTick()
+        await wrapper.vm.$nextTick()
+
+        expect(sendMessage).not.toHaveBeenCalled()
+
+        wrapper.unmount()
+    })
+
+    it('does not accept a second message while one is being answered', async () => {
+        const wrapper = mount(WidgetBuilder, { props: { widgetId: 'w-1', token: 'tok-1' } })
+
+        socket.loading.value = true
+        await wrapper.vm.$nextTick()
+
+        // Typing carries on, but sending waits its turn.
+        const send = wrapper.find('.welcome-send-button, .send-button')
+        expect(send.attributes('disabled')).toBeDefined()
+
+        wrapper.unmount()
+    })
+})

frontend/src/__tests__/webclient/widgetStartupRefusal.spec.ts

@@ -0,0 +1,163 @@
+/*
+Copyright 2024-2026 ChatterMate
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { enableAutoUnmount, flushPromises, mount } from '@vue/test-utils'
+import { ref } from 'vue'
+
+/**
+ * The widget's socket refused at startup because its token isn't bound to a
+ * customer yet - a visitor whose authorization answer never reached the server
+ * connected with the page's anonymous token. The widget has to authorize again
+ * (which binds one) and finish starting up, not hang on "Initializing chat...".
+ */
+
+const socket = {
+    messages: ref<any[]>([]),
+    loading: ref(false),
+    errorMessage: ref(''),
+    showError: ref(false),
+    loadingHistory: ref(false),
+    hasStartedChat: ref(false),
+    connectionStatus: ref('connecting'),
+    humanAgent: ref({}),
+    currentForm: ref(null),
+    currentSessionId: ref(''),
+    refusal: ref<string | null>(null)
+}
+const connect = vi.fn()
+const onTakeover = vi.fn()
+
+vi.mock('@/composables/useWidgetSocket', () => ({
+    useWidgetSocket: () => ({
+        ...socket,
+        connect,
+        onTakeover,
+        sendMessage: vi.fn(),
+        sendFileAttachments: vi.fn(),
+        endChat: vi.fn(),
+        loadChatHistory: vi.fn(),
+        reconnect: vi.fn(),
+        cleanup: vi.fn(),
+        onSessionState: vi.fn(),
+        submitRating: vi.fn(),
+        submitForm: vi.fn(),
+        getWorkflowState: vi.fn(),
+        proceedWorkflow: vi.fn(),
+        onWorkflowState: vi.fn(),
+        onWorkflowProceeded: vi.fn(),
+        setToken: vi.fn(),
+        setWidgetId: vi.fn()
+    })
+}))
+
+/** One connect attempt: refused for a missing customer, or connected. */
+const refused = async () => {
+    socket.refusal.value = 'customer_required'
+    socket.connectionStatus.value = 'failed'
+    return false
+}
+const connected = async () => {
+    socket.refusal.value = null
+    socket.connectionStatus.value = 'connected'
+    return true
+}
+
+const authorized = (token: string) => ({
+    ok: true, status: 200, json: async () => ({ agent: { name: 'Ada' }, token })
+})
+
+// Each test mounts the whole widget: unmount it afterwards (even when the test
+// fails), or its timers and DOM observer fire after the environment is torn
+// down and the run fails with "document is not defined".
+enableAutoUnmount(afterEach)
+
+describe('a widget whose socket is refused at startup', () => {
+    let fetchMock: ReturnType<typeof vi.fn>
+
+    beforeEach(() => {
+        connect.mockReset()
+        onTakeover.mockReset()
+        socket.refusal.value = null
+        socket.connectionStatus.value = 'connecting'
+        ;(window as any).__INITIAL_DATA__ = {
+            widgetId: 'w-1',
+            agentName: 'Ada',
+            customization: {},
+            customer: {},
+            initialToken: 'anonymous'
+        }
+        fetchMock = vi.fn().mockResolvedValue(authorized('bound'))
+        vi.stubGlobal('fetch', fetchMock)
+        vi.resetModules()
+    })
+
+    afterEach(() => {
+        vi.unstubAllGlobals()
+    })
+
+    const start = async () => {
+        const WidgetBuilder = (await import('@/webclient/WidgetBuilder.vue')).default
+        const wrapper = mount(WidgetBuilder, { props: { widgetId: 'w-1' } })
+        await flushPromises()
+        return wrapper
+    }
+    const authorizationCalls = () =>
+        fetchMock.mock.calls.filter(([url]) => String(url).endsWith('/widgets/w-1'))
+
+    it('authorizes again and finishes starting up', async () => {
+        connect.mockImplementationOnce(refused).mockImplementationOnce(connected)
+
+        const wrapper = await start()
+
+        expect(authorizationCalls()).toHaveLength(2)
+        expect(connect).toHaveBeenCalledTimes(2)
+        expect(wrapper.find('.initializing-overlay').exists()).toBe(false)
+        expect(onTakeover).toHaveBeenCalled() // the rest of startup ran
+    })
+
+    it('never answers authorization from a stored copy', async () => {
+        connect.mockImplementation(connected)
+        await start()
+
+        expect(authorizationCalls()[0][1]).toMatchObject({ cache: 'no-store' })
+    })
+
+    it('authorizes again only once, then offers the reconnect button', async () => {
+        connect.mockImplementation(refused)
+
+        const wrapper = await start()
+
+        expect(authorizationCalls()).toHaveLength(2)
+        expect(wrapper.find('.initializing-overlay').exists()).toBe(false)
+        expect(wrapper.find('.reconnect-button').exists()).toBe(true)
+        expect(onTakeover).toHaveBeenCalled()
+    })
+
+    it('shows the email form when authorizing again needs an email first', async () => {
+        connect.mockImplementation(refused)
+        fetchMock
+            .mockResolvedValueOnce(authorized('anonymous'))
+            .mockResolvedValueOnce({ ok: false, status: 401, json: async () => ({ detail: 'Unauthorized' }) })
+
+        const wrapper = await start()
+
+        expect(authorizationCalls()).toHaveLength(2)
+        expect(wrapper.find('.initializing-overlay').exists()).toBe(false)
+        expect(wrapper.find('.reconnect-button').exists()).toBe(false)
+        expect(onTakeover).toHaveBeenCalled()
+    })
+})