Each chat row in the AI-chat history now shows a dimmed second line with
how long ago the chat was created and the document it was created in
("N ago / <document>", or "No document" when started outside a page).
Server:
- New migration: nullable ai_chats.page_id (FK pages.id, ON DELETE SET NULL).
- Capture the origin page at chat creation from the client-supplied openPage,
but validate it first: it must be a real page in the same workspace that the
user may read (PageAccessService.validateCanView), else null. This keeps the
"openPage.id is attacker-controllable but harmless" invariant - preventing a
cross-workspace/cross-space page-title leak and a post-hijack FK crash.
- findByCreator left-joins pages (scoped by workspace, defense-in-depth) and
returns pageTitle.
Client:
- IAiChat gains pageId/pageTitle; ConversationList renders a ChatMetaLine
(useTimeAgo + origin document) as a dimmed second line.
- Add i18n key "No document" (en-US, ru-RU).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>