Experimental/brain-of-reese
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fix(chat): keep generating while the tab is hidden

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Root cause (task 01): none of C1-C3 - in Chromium 151 (real mode) a
merely-hidden tab neither stops the stream (frames arrive at full rate;
turn completes) nor fires pagehide on tab switch; C1's double-record
path was proven latent via a synthetic pagehide (trigger is
browser-dependent, e.g. Safari) and C2 (the 120s pre-token guard) was
confirmed to fire while hidden.

- C1: the pagehide partial-persist is correlated with the turn's settle
  (leavePartialIndex) - the done/stop settle REPLACES it in place
  (identity-guarded rememberBrainTurn in-place mode), so bor.chat.v1
  and the auto-saved saved_chats row keep exactly ONE brain turn per
  question; a real navigation never runs a settle, so the leave-save
  is unchanged.
- C2: the visibility re-arm gives the still-armed pre-token guard a
  fresh TURN_TIMEOUT_MS when the tab returns to visible - hidden time
  no longer counts toward the 120s guard.
- Phase-48 teardown contract untouched: Stop / tab close / real
  navigation still cancel the fetch and stop the model.
- Unit pins: tests/unit/test_frontend_hidden_tab.py (the app.js
  mechanisms without a browser).
- E2E pins: tests/e2e/test_hidden_tab_stream.py - synthetic pagehide
  mid-stream completes exactly once with one brain turn (localStorage
  + auto-saved row), reload restores one bubble, no-event baseline,
  and the fake-clock pre-token guard re-arm (discriminating: fails
  with the re-arm disabled).
This commit is contained in:
ducoterra
2026-09-05 14:34:33 -04:00
parent 45c3fa2863
commit a16130c71d
28 changed files with 4127 additions and 10 deletions
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