build: 打通 FastAPI 与 Vue 最小工程、依赖与数据库连接

后端入口、配置、Redis 与 Alembic 迁移就位；前端 Vite 工程可安装可构建。

backend/alembic/versions/bdaa7a5d6109_removed_node_specific_fields.py

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+"""
+Copyright 2024-2026 ReplyPier
+
+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.
+"""
+
+"""removed node specific fields
+
+Revision ID: bdaa7a5d6109
+Revises: dd0e5ceefe4b
+Create Date: 2025-07-23 12:06:47.901308
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = 'bdaa7a5d6109'
+down_revision: Union[str, None] = 'dd0e5ceefe4b'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    
+    op.drop_constraint('workflow_nodes_model_id_fkey', 'workflow_nodes', type_='foreignkey')
+    op.drop_column('workflow_nodes', 'action_type')
+    op.drop_column('workflow_nodes', 'form_fields')
+    op.drop_column('workflow_nodes', 'model_id')
+    op.drop_column('workflow_nodes', 'system_prompt')
+    op.drop_column('workflow_nodes', 'condition_expression')
+    op.drop_column('workflow_nodes', 'wait_until_condition')
+    op.drop_column('workflow_nodes', 'action_config')
+    op.drop_column('workflow_nodes', 'temperature')
+    op.drop_column('workflow_nodes', 'wait_duration')
+    op.drop_column('workflow_nodes', 'transfer_rules')
+    op.drop_column('workflow_nodes', 'landing_page_content')
+    op.drop_column('workflow_nodes', 'landing_page_heading')
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('workflow_nodes', sa.Column('landing_page_heading', sa.TEXT(), autoincrement=False, nullable=True))
+    op.add_column('workflow_nodes', sa.Column('landing_page_content', sa.TEXT(), autoincrement=False, nullable=True))
+    op.add_column('workflow_nodes', sa.Column('transfer_rules', postgresql.JSON(astext_type=sa.Text()), autoincrement=False, nullable=True))
+    op.add_column('workflow_nodes', sa.Column('wait_duration', sa.INTEGER(), autoincrement=False, nullable=True))
+    op.add_column('workflow_nodes', sa.Column('temperature', sa.DOUBLE_PRECISION(precision=53), autoincrement=False, nullable=True))
+    op.add_column('workflow_nodes', sa.Column('action_config', postgresql.JSON(astext_type=sa.Text()), autoincrement=False, nullable=True))
+    op.add_column('workflow_nodes', sa.Column('wait_until_condition', sa.TEXT(), autoincrement=False, nullable=True))
+    op.add_column('workflow_nodes', sa.Column('condition_expression', sa.TEXT(), autoincrement=False, nullable=True))
+    op.add_column('workflow_nodes', sa.Column('system_prompt', sa.TEXT(), autoincrement=False, nullable=True))
+    op.add_column('workflow_nodes', sa.Column('model_id', sa.INTEGER(), autoincrement=False, nullable=True))
+    op.add_column('workflow_nodes', sa.Column('form_fields', postgresql.JSON(astext_type=sa.Text()), autoincrement=False, nullable=True))
+    op.add_column('workflow_nodes', sa.Column('action_type', sa.VARCHAR(), autoincrement=False, nullable=True))
+    op.create_foreign_key('workflow_nodes_model_id_fkey', 'workflow_nodes', 'ai_configs', ['model_id'], ['id'])
+
+    # ### end Alembic commands ###