docs: rebuild README previews from 2x captures

Rework the product preview section around three real screens captured at
deviceScaleFactor 2 instead of the previous 900 px shots taken at a 75%
browser zoom, which read as blurry.

- capture the conversation workspace, the agent customization page and the
  visitor widget, then crop each one to a consistent frame
- drop the tight 480 px widget crop and its leftover gray strip
- restructure the preview section with one lead line and a caption per shot,
  and fold the local start-up steps into a shorter quick start
- keep the browser overlay out of the captures and note the method in the
  asset manifest
- finish the visible ReplyPier rename (sidebar wordmark, widget footer,
  page title, login screen, demo page) so screenshots and UI agree
This commit is contained in:
WangShen007 committed 2026-10-22 19:38:57 +08:00
1 parent 99e64bdcd3
commit adbc6c6861
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