[iLevyTate]

Fixes from a systematic bug and regression sweep on top of #110. Each fix has a regression test; details are in CHANGELOG.md under Unreleased.

Commits

• perf(organize): a bulk category change is saved in one store update
• docs(changelog): record the second sweep fixes
• fix(setup): no false stopped warning, engine failure is shown, a missing projector is not ready
• fix(history): a path a file has left no longer addresses that file's history
• fix(embedding): failed items are retried on their own timer
• fix(chat): scope drop, reopened answers, retry keeps the question, large scopes are saved
• fix(settings): a failed settings read never saves defaults over stored settings
• fix(discover): the recording busy-wait works through the bridge and a dropped folder skips queued files
• fix(organize): a batch still moving files is not cut off or rolled back at five minutes
• fix(organize): Stop ends a batch stuck on a drive that stopped answering
• docs(changelog): record the systematic-sweep fixes
• fix(search-ui): Timeline list measures its container and the hidden Atlas tab is inert
• fix(lifecycle): a second quit waits for cleanup and a failed check keeps Update ready
• fix(watcher): app moves keep history, Explorer renames are matched, re-enable during stop sticks
• fix(analysis): extension tokens, instruction-aware caches, archive keywords, fractional confidence
• fix(vision): images go to the one-request runtime one at a time
• fix(models): early-closed downloads fail and resume, missing projector warns, failed rebuild reverts the form
• fix(discover): recordings analyzed one by one wait their turn instead of failing busy
• fix(ipc): network-share paths reach the mover and free text with a path is not blanked
• fix(session): graph preferences survive an expired session and the notice shows on any screen
• fix(organize-ui): notification focus, saved bulk category, real counts and singular wording
• fix(vectors): a file moved onto a leftover row's path keeps its own search entry
• fix(suggestions): feedback notes no longer write the ranking score into confidence
• fix(undo): an entry whose file is gone leaves history and errors keep their code
• fix(organize): a slow cross-drive move runs to its end instead of being reported failed

Verification (local, Windows x64)

• Full Jest: 938 suites, 13,777 passed, 4 skipped, 0 failed
• Stress suite: 37 passed
• Every non-build gate in npm run ci exits 0; npm run dist:win builds
• Playwright e2e was not completed locally (the machine ran out of memory)