feat: modal chat search popup by jaaydenh · Pull Request #25535 · coder/coder

and others added 29 commits

Addresses unresolved findings from the latest review pass:

- Strip quotes from bare title text instead of escaping them, since the
  backend search-query parser has no backslash-escape handling (DEREM-12).
- Add doc comment to normalizeChatSearchInput (DEREM-13).
- Rename supportedChatSearchFilterKeys to passthroughChatSearchFilterKeys
  to clarify why 'title' is excluded (DEREM-16).
- Rename hasFallbackTitle to hasBareTitleText (DEREM-19).
- Add test for trailing-colon filter behavior (DEREM-17).
- Use keepPreviousData to avoid skeleton flash between debounced
  keystrokes (DEREM-11).
- Rename highlightedChatIndex state to selectedChatIndex; rename clamped
  variable to safeSelectedChatIndex to keep the concept under one name
  (DEREM-14).
- Extract getChatDisplayConfig helper in statusConfig.ts; use in both
  ChatSearchResults and ChatTreeNode so the icon derivation isn't
  duplicated (DEREM-10).
- Extract RESULTS_AREA_MIN_HEIGHT constant (DEREM-20).
- Pluralize result count: '1 result' vs 'N results' (DEREM-18).
- Drop the redundant space-y-1 wrapper around the search input
  (DEREM-21).

Resolved conflict in coderd/searchquery/search_test.go by taking main's
version. The chat search backend (#25391) is now in main, so the PR
branch's older copies of backend files (coderd/searchquery, coderd/exp_chats,
coderd/database/queries, coderd/apidoc, docs/reference/api/chats.md) were
reset to main's versions to avoid divergence with the merged backend.