diff --git a/.agents/phases/todo/73_hidden_tab_stream/01_repro_root_cause.md b/.agents/phases/complete/73_hidden_tab_stream/01_repro_root_cause.md similarity index 100% rename from .agents/phases/todo/73_hidden_tab_stream/01_repro_root_cause.md rename to .agents/phases/complete/73_hidden_tab_stream/01_repro_root_cause.md diff --git a/.agents/phases/todo/73_hidden_tab_stream/02_fix_hidden_tab.md b/.agents/phases/complete/73_hidden_tab_stream/02_fix_hidden_tab.md similarity index 100% rename from .agents/phases/todo/73_hidden_tab_stream/02_fix_hidden_tab.md rename to .agents/phases/complete/73_hidden_tab_stream/02_fix_hidden_tab.md diff --git a/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__01_repro_root_cause.a1.err b/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__01_repro_root_cause.a1.err new file mode 100644 index 0000000..e69de29 diff --git a/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__01_repro_root_cause.a1.md b/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__01_repro_root_cause.a1.md new file mode 100644 index 0000000..0d9827c --- /dev/null +++ b/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__01_repro_root_cause.a1.md @@ -0,0 +1,10 @@ +**Task 01 complete — repro performed, root cause pinned.** + +- Real-browser repro (Chromium 151 headful, 2 real tabs in 1 window, 90s re-paced mock stream, scratch DB — no owner data touched; all instrumentation throwaway, no repo changes): + - **Scenario A:** real tab switch mid-stream → 65s hidden: stream kept arriving at full wire rate, turn completed on return, no error, `bor.chat.v1` = 1 brain turn; server: `total_ms=90143`, **no** `turn cancelled` → C3 ruled out. Tab switch fired only `visibilitychange` — **no `pagehide`** in Chromium. + - **Scenario C:** synthetic `pagehide` mid-stream → **2 brain turns** (336-char partial + 5379-char full) for one question; reload renders both → C1 corruption branch proven latent (trigger is browser-dependent, e.g. Safari). + - **Scenario B:** 130s pre-token hold + hidden tab → 120s `TURN_TIMEOUT_MS` guard fired **while hidden** ("That's taking a long time — the answer may be stuck."), server `turn cancelled total_ms=119999` (client-initiated) → C2 confirmed. +- Verdict: **none of C1–C3 fired on a simple tab switch in the test browser** (answer continues + completes; no stall, no cancel, no pagehide); C1 latent path + C2 conditional path pinned with evidence (`.agents/reports/73_hidden_tab_stream/task01_findings.md` + JSONs/screenshots/server log). +- Gates: `uv run ruff check .` clean; `uv run pyright` 0 errors; `uv run pytest --cov=app` → **1511 passed, app/ coverage 99%** (>90%); E2E `test_smoke.py` 3 passed. +- Notable: first attempt's "hidden" state was an X11 focus flake (XWayland); re-run used stable-focus assertions + contamination detection (exactly 1 hidden/1 visible event). No timer throttling observed in this environment — noted, not an app defect. +- Next pending task: `73_hidden_tab_stream/02_fix_hidden_tab.md`. diff --git a/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__01_repro_root_cause.a1.validate b/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__01_repro_root_cause.a1.validate new file mode 100644 index 0000000..1d3ea29 --- /dev/null +++ b/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__01_repro_root_cause.a1.validate @@ -0,0 +1,77 @@ +........................................................................ [ 4%] +........................................................................ [ 9%] +........................................................................ [ 14%] +........................................................................ [ 19%] +........................................................................ [ 23%] +........................................................................ 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[100%] +=============================== warnings summary =============================== +.venv/lib/python3.13/site-packages/fastapi/testclient.py:1 + /var/home/ducoterra/Projects/Personal/brain_of_reese/.venv/lib/python3.13/site-packages/fastapi/testclient.py:1: StarletteDeprecationWarning: Using `httpx` with `starlette.testclient` is deprecated; install `httpx2` instead. + from starlette.testclient import TestClient as TestClient # noqa + +-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html +================================ tests coverage ================================ +_______________ coverage: platform linux, python 3.13.13-final-0 _______________ + +Name Stmts Miss Cover +----------------------------------------------- +app/__init__.py 1 0 100% +app/api/__init__.py 0 0 100% +app/api/auth.py 22 0 100% +app/api/chat.py 176 0 100% +app/api/chats.py 110 0 100% +app/api/config.py 7 0 100% +app/api/doc_drafts.py 93 0 100% +app/api/docs.py 50 0 100% +app/api/git_sources.py 212 0 100% +app/api/health.py 10 0 100% +app/api/steering.py 42 0 100% +app/api/suggestions.py 8 0 100% +app/api/sync.py 101 0 100% +app/config.py 126 0 100% +app/core/__init__.py 0 0 100% +app/core/auth.py 20 0 100% +app/core/caching.py 108 0 100% +app/core/debugging.py 29 2 93% +app/core/docs_push.py 39 0 100% +app/core/logging.py 13 0 100% +app/db.py 21 0 100% +app/main.py 52 0 100% +app/models.py 86 0 100% +app/rag/__init__.py 0 0 100% +app/rag/agent.py 222 0 100% +app/rag/archive_upload.py 128 0 100% +app/rag/chunker.py 206 4 98% +app/rag/git_sources.py 14 0 100% +app/rag/importer.py 180 3 98% +app/rag/llm.py 216 0 100% +app/rag/overview.py 71 0 100% +app/rag/prompts.py 65 0 100% +app/rag/retriever.py 150 3 98% +app/rag/scaffolding.py 55 0 100% +app/rag/source_removal.py 41 0 100% +app/rag/sources_meta.py 16 0 100% +app/rag/suggestions.py 27 0 100% +app/rag/summarizer.py 24 0 100% +app/schemas.py 205 0 100% +----------------------------------------------- +TOTAL 2946 12 99% +coverage gate: app/ 99% (>90%) OK +All checks passed! +0 errors, 0 warnings, 0 informations +validation OK diff --git a/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__02_fix_hidden_tab.a1.err b/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__02_fix_hidden_tab.a1.err new file mode 100644 index 0000000..e69de29 diff --git a/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__02_fix_hidden_tab.a1.md b/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__02_fix_hidden_tab.a1.md new file mode 100644 index 0000000..efb4574 --- /dev/null +++ b/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__02_fix_hidden_tab.a1.md @@ -0,0 +1,16 @@ +All green. Task 02 is complete. + +**Implemented (frontend-only, `frontend/assets/app.js`):** +- **C1 hardening (unconditional):** module-scope `leavePartialIndex` (reset in `runTurn`); the `pagehide` handler records the pushed partial's index after `rememberBrainTurn`; `rememberBrainTurn` gained an identity-guarded in-place mode (`replaceIndex >= 0 && conversation[replaceIndex]?.who === "brain"` → replace, else append) with `saveConversation()`+`persistConversation()` running once on the written record; the `done` and stop-path settles pass `leavePartialIndex` so the final record *replaces* the partial (plus the zero-frame fallback, passed for uniform correlation though unreachable with a partial). Real-navigation leave-save unchanged (no settle runs on unload). +- **C2 fix (task 01 confirmed C2):** `turnTimeoutCb` stores the guard callback; a `visibilitychange` listener re-arms the guard with a fresh `TURN_TIMEOUT_MS` when the tab returns to visible with the guard still armed — hidden time no longer counts toward the 120s pre-token guard. +- Stop/teardown contract (phase 48) untouched. New unit pins: `tests/unit/test_frontend_hidden_tab.py` (8 tests). +- Fixed one pre-existing-pin break I introduced then resolved by keeping the done-call on one line (`test_chat_persistence.py` format pin). + +**Results (all green):** +- `uv run pytest --cov=app --cov-report=term-missing` → 1519 passed, app/ coverage **99%** (>90% floor) +- `uv run ruff check . && uv run pyright` → clean (0 errors) +- Regression E2E in isolation: `test_stop_generation.py` 3✓, `test_chat_persistence.py` 4✓, `test_chat_history.py` 5✓, `test_retry_answer.py` 4✓, `test_chat_rag.py` 3✓, `test_sources_midstream_bug.py` 4✓, `test_loading_feedback.py` 5✓ + +**Decisions:** all three runTurn settle write-sites pass the correlation index (task named two; the fallback is defensive, provably unreachable with a partial). Commit is left to task 03 per phase plan (root-cause line goes in that commit body). + +**Next pending task:** `.agents/phases/todo/73_hidden_tab_stream/03_e2e_hidden_tab_stream.md` diff --git a/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__02_fix_hidden_tab.a1.validate b/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__02_fix_hidden_tab.a1.validate new file mode 100644 index 0000000..8cda41a --- /dev/null +++ b/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__02_fix_hidden_tab.a1.validate @@ -0,0 +1,78 @@ +........................................................................ [ 4%] +........................................................................ [ 9%] +........................................................................ [ 14%] +........................................................................ [ 18%] +........................................................................ 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[100%] +=============================== warnings summary =============================== +.venv/lib/python3.13/site-packages/fastapi/testclient.py:1 + /var/home/ducoterra/Projects/Personal/brain_of_reese/.venv/lib/python3.13/site-packages/fastapi/testclient.py:1: StarletteDeprecationWarning: Using `httpx` with `starlette.testclient` is deprecated; install `httpx2` instead. + from starlette.testclient import TestClient as TestClient # noqa + +-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html +================================ tests coverage ================================ +_______________ coverage: platform linux, python 3.13.13-final-0 _______________ + +Name Stmts Miss Cover +----------------------------------------------- +app/__init__.py 1 0 100% +app/api/__init__.py 0 0 100% +app/api/auth.py 22 0 100% +app/api/chat.py 176 0 100% +app/api/chats.py 110 0 100% +app/api/config.py 7 0 100% +app/api/doc_drafts.py 93 0 100% +app/api/docs.py 50 0 100% +app/api/git_sources.py 212 0 100% +app/api/health.py 10 0 100% +app/api/steering.py 42 0 100% +app/api/suggestions.py 8 0 100% +app/api/sync.py 101 0 100% +app/config.py 126 0 100% +app/core/__init__.py 0 0 100% +app/core/auth.py 20 0 100% +app/core/caching.py 108 0 100% +app/core/debugging.py 29 2 93% +app/core/docs_push.py 39 0 100% +app/core/logging.py 13 0 100% +app/db.py 21 0 100% +app/main.py 52 0 100% +app/models.py 86 0 100% +app/rag/__init__.py 0 0 100% +app/rag/agent.py 222 0 100% +app/rag/archive_upload.py 128 0 100% +app/rag/chunker.py 206 4 98% +app/rag/git_sources.py 14 0 100% +app/rag/importer.py 180 3 98% +app/rag/llm.py 216 0 100% +app/rag/overview.py 71 0 100% +app/rag/prompts.py 65 0 100% +app/rag/retriever.py 150 3 98% +app/rag/scaffolding.py 55 0 100% +app/rag/source_removal.py 41 0 100% +app/rag/sources_meta.py 16 0 100% +app/rag/suggestions.py 27 0 100% +app/rag/summarizer.py 24 0 100% +app/schemas.py 205 0 100% +----------------------------------------------- +TOTAL 2946 12 99% +coverage gate: app/ 99% (>90%) OK +All checks passed! +0 errors, 0 warnings, 0 informations +validation OK diff --git a/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__03_e2e_hidden_tab_stream.a1.err b/.agents/reports/73_hidden_tab_stream/73_hidden_tab_stream__03_e2e_hidden_tab_stream.a1.err new file mode 100644 index 0000000..e69de29 diff --git a/.agents/reports/73_hidden_tab_stream/task01_A_0_before.png b/.agents/reports/73_hidden_tab_stream/task01_A_0_before.png new file mode 100644 index 0000000..ecf6896 Binary files /dev/null and b/.agents/reports/73_hidden_tab_stream/task01_A_0_before.png differ diff --git a/.agents/reports/73_hidden_tab_stream/task01_A_1_streaming_visible.png b/.agents/reports/73_hidden_tab_stream/task01_A_1_streaming_visible.png new file mode 100644 index 0000000..50aef4b Binary files /dev/null and b/.agents/reports/73_hidden_tab_stream/task01_A_1_streaming_visible.png differ diff --git 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Step 8: configure node-8 with the homelab defaults and verify that step 8 of the long walkthrough is complete before moving on.\n9. Step 9: configure node-9 with the homelab defaults and verify that step 9 of the long walkthrough is complete before moving on.\n10. Step 10: configure node-10 with the homelab defaults and verify that step 10 of the long walkthrough is complete before moving on.\n11. Step 11: configure node-11 with the homelab defaults and verify that step 11 of the long walkthrough is complete before moving on.\n12. Step 12: configure node-12 with the homelab defaults and verify that step 12 of the long walkthrough is complete before moving on.\n13. Step 13: configure node-13 with the homelab defaults and verify that step 13 of the long walkthrough is complete before moving on.\n14. Step 14: configure node-14 with the homelab defaults and verify that step 14 of the long walkthrough is complete before moving on.\n15. Step 15: configure node-15 with the homelab defaults and verify that step 15 of the long walkthrough is complete before moving on.\n16. Step 16: configure node-16 with the homelab defaults and verify that step 16 of the long walkthrough is complete before moving on.\n17. Step 17: configure node-17 with the homelab defaults and verify that step 17 of the long walkthrough is complete before moving on.\n18. Step 18: configure node-18 with the homelab defaults and verify that step 18 of the long walkthrough is complete before moving on.\n19. Step 19: configure node-19 with the homelab defaults and verify that step 19 of the long walkthrough is complete before moving on.\n20. Step 20: configure node-20 with the homelab defaults and verify that step 20 of the long walkthrough is complete before moving on.\n21. Step 21: configure node-21 with the homelab defaults and verify that step 21 of the long walkthrough is complete before moving on.\n22. Step 22: configure node-22 with the homelab defaults and verify that step 22 of the long walkthrough is complete before moving on.\n23. Step 23: configure node-23 with the homelab defaults and verify that step 23 of the long walkthrough is complete before moving on.\n24. Step 24: configure node-24 with the homelab defaults and verify that step 24 of the long walkthrough is complete before moving on.\n25. Step 25: configure node-25 with the homelab defaults and verify that step 25 of the long walkthrough is complete before moving on.\n26. Step 26: configure node-26 with the homelab defaults and verify that step 26 of the long walkthrough is complete before moving on.\n27. Step 27: configure node-27 with the homelab defaults and verify that step 27 of the long walkthrough is complete before moving on.\n28. Step 28: configure node-28 with the homelab defaults and verify that step 28 of the long walkthrough is complete before moving on.\n29. Step 29: configure node-29 with the homelab defaults and verify that step 29 of the long walkthrough is complete before moving on.\n30. Step 30: configure node-30 with the homelab defaults and verify that step 30 of the long walkthrough is complete before moving on.\n31. Step 31: configure node-31 with the homelab defaults and verify that step 31 of the long walkthrough is complete before moving on.\n32. Step 32: configure node-32 with the homelab defaults and verify that step 32 of the long walkthrough is complete before moving on.\n33. Step 33: configure node-33 with the homelab defaults and verify that step 33 of the long walkthrough is complete before moving on.\n34. Step 34: configure node-34 with the homelab defaults and verify that step 34 of the long walkthrough is complete before moving on.\n35. Step 35: configure node-35 with the homelab defaults and verify that step 35 of the long walkthrough is complete before moving on.\n36. Step 36: configure node-36 with the homelab defaults and verify that step 36 of the long walkthrough is complete before moving on.\n37. Step 37: configure node-37 with the homelab defaults and verify that step 37 of the long walkthrough is complete before moving on.\n38. Step 38: configure node-38 with the homelab defaults and verify that step 38 of the long walkthrough is complete before moving on.\n39. Step 39: configure node-39 with the homelab defaults and verify that step 39 of the long walkthrough is complete before moving on.\n40. Step 40: configure node-40 with the homelab defaults and verify that step 40 of the long walkthrough is complete before moving on.\nLONG-ANSWER-END", + "deflected": true, + "sources": [], + "suggestions": [ + "What are the correct llama.cpp arguments for Qwen 3.8?" + ] + } + ] + }, + "resource_timing_api_chat": [ + {} + ], + "network_api_chat": [ + { + "what": "requestWillBeSent", + "requestId": "1194125.20" + }, + { + "what": "responseReceived", + "requestId": "1194125.20" + }, + { + "what": "loadingFinished", + "requestId": "1194125.20" + }, + { + "what": "loadingFailed", + "requestId": "1194125.20" + } + ], + "console_errors": [ + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", + "pageerror: {}", 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and b/.agents/reports/73_hidden_tab_stream/task01_B_2_hidden_guard_fired.png differ diff --git a/.agents/reports/73_hidden_tab_stream/task01_B_3_returned.png b/.agents/reports/73_hidden_tab_stream/task01_B_3_returned.png new file mode 100644 index 0000000..01f536c Binary files /dev/null and b/.agents/reports/73_hidden_tab_stream/task01_B_3_returned.png differ diff --git a/.agents/reports/73_hidden_tab_stream/task01_B_evidence.json b/.agents/reports/73_hidden_tab_stream/task01_B_evidence.json new file mode 100644 index 0000000..51c4ba5 --- /dev/null +++ b/.agents/reports/73_hidden_tab_stream/task01_B_evidence.json @@ -0,0 +1,127 @@ +{ + "scenario": "B \u2014 C2 probe: 120s guard in a hidden pre-token window (130s silence)", + "wall_seconds": { + "hide": 6.5, + "return": 138.6 + }, + "probes": [ + { + "vis": "hidden", + "bubble": 16, + "btn": "Stop", + "status": "Brain of Reese is thinking", + "banner": "", + "dt": 16.7 + }, + { + "vis": "hidden", + "bubble": 16, + "btn": "Stop", + "status": "Brain of Reese is thinking", + "banner": "", + "dt": 26.7 + }, + { + "vis": "hidden", + "bubble": 16, + "btn": "Stop", + "status": "Brain of Reese is thinking", + "banner": "", + "dt": 36.7 + }, + { + "vis": "hidden", + "bubble": 16, + "btn": "Stop", + "status": "Brain of Reese is thinking", + "banner": "", + "dt": 46.7 + }, + { + "vis": "hidden", + "bubble": 16, + "btn": "Stop", + "status": "Brain of Reese is thinking", + "banner": "", + "dt": 56.7 + }, + { + "vis": "hidden", + "bubble": 16, + "btn": "Stop", + "status": "Brain of Reese is thinking", + "banner": "", + "dt": 66.8 + }, + { + "vis": "hidden", + "bubble": 16, + "btn": "Stop", + "status": "Brain of Reese is thinking", + "banner": "", + "dt": 76.8 + }, + { + "vis": "hidden", + "bubble": 16, + "btn": "Stop", + "status": "Brain of Reese is thinking", + "banner": "", + "dt": 86.8 + }, + { + "vis": "hidden", + "bubble": 16, + "btn": "Stop", + "status": "Brain of Reese is thinking", + "banner": "", + "dt": 96.8 + }, + { + "vis": "hidden", + "bubble": 16, + "btn": "Stop", + "status": "Brain of Reese is thinking", + "banner": "", + "dt": 106.8 + }, + { + "vis": "hidden", + "bubble": 16, + "btn": "Stop", + "status": "Brain of Reese is thinking", + "banner": "", + "dt": 116.8 + }, + { + "vis": "hidden", + "bubble": 53, + "btn": "Send", + "status": "", + "banner": "That's taking a long time \u2014 the answer may be stuck. Try again \u2014 if this persists, check the LLM is reachable.", + "dt": 126.8 + }, + { + "vis": "hidden", + "bubble": 53, + "btn": "Send", + "status": "", + "banner": "That's taking a long time \u2014 the answer may be stuck. Try again \u2014 if this persists, check the LLM is reachable.", + "dt": 136.8 + } + ], + "final_state": { + "vis": "visible", + "bubble": 53, + "btn": "Send", + "status": "", + "banner": "That's taking a long time \u2014 the answer may be stuck. Try again \u2014 if this persists, check the LLM is reachable." + }, + "localStorage_messages": [ + { + "who": "user", + "len": 53, + "head": "please write a long answer about your favorite topics" + } + ] +} \ No newline at end of file diff --git a/.agents/reports/73_hidden_tab_stream/task01_C_1_after_pagehide.png b/.agents/reports/73_hidden_tab_stream/task01_C_1_after_pagehide.png new file mode 100644 index 0000000..e5c03c5 Binary files /dev/null and b/.agents/reports/73_hidden_tab_stream/task01_C_1_after_pagehide.png differ diff --git a/.agents/reports/73_hidden_tab_stream/task01_C_2_complete.png b/.agents/reports/73_hidden_tab_stream/task01_C_2_complete.png new file mode 100644 index 0000000..37d2224 Binary files /dev/null and b/.agents/reports/73_hidden_tab_stream/task01_C_2_complete.png differ diff --git a/.agents/reports/73_hidden_tab_stream/task01_C_3_reloaded.png b/.agents/reports/73_hidden_tab_stream/task01_C_3_reloaded.png new file mode 100644 index 0000000..ca41f4e Binary files /dev/null and b/.agents/reports/73_hidden_tab_stream/task01_C_3_reloaded.png differ diff --git a/.agents/reports/73_hidden_tab_stream/task01_C_evidence.json b/.agents/reports/73_hidden_tab_stream/task01_C_evidence.json new file mode 100644 index 0000000..ad5f703 --- /dev/null +++ b/.agents/reports/73_hidden_tab_stream/task01_C_evidence.json @@ -0,0 +1,30 @@ +{ + "scenario": "C \u2014 synthetic pagehide mid-stream (C1 double-record path)", + "mid_bubble_chars": 327, + "brain_turns_after_completion": [ + { + "len": 336, + "head": "1. Step 1: configure node-1 with the homelab defaults and verify that step 1 of the long walkthrough", + "tail": "figure node-3 with the homelab defaults and verify that step" + }, + { + "len": 5379, + "head": "1. Step 1: configure node-1 with the homelab defaults and verify that step 1 of the long walkthrough", + "tail": "ng walkthrough is complete before moving on.\nLONG-ANSWER-END" + } + ], + "restored_messages": [ + { + "who": "user", + "len": 53 + }, + { + "who": "brain", + "len": 327 + }, + { + "who": "brain", + "len": 5228 + } + ] +} \ No newline at end of file diff --git a/.agents/reports/73_hidden_tab_stream/task01_findings.md b/.agents/reports/73_hidden_tab_stream/task01_findings.md new file mode 100644 index 0000000..d7f9b79 --- /dev/null +++ b/.agents/reports/73_hidden_tab_stream/task01_findings.md @@ -0,0 +1,150 @@ +# Phase 73 / Task 01 — Repro + root-cause findings + +**Bug (TODO.md L3):** "Clicking on another tab while an answer is generating +stops that answer from being generated. Responses should continue to generate +unless you outright close the tab." + +**Environment (the "test browser"):** real (headful) Chromium +`151.0.0.0` (Playwright chromium-1234 build, X11/XWayland on the owner's +KDE Plasma Wayland desktop, display :0), launched with ONLY +`--disable-popup-blocking` added (needed for the scripted second tab) — +**no** `--disable-*-background*` flags, so real hidden-tab behavior is +under test. The app ran against the deterministic mock LLM +(`tests/e2e/mock_llm.py`) behind a re-pacing proxy (0.2 s per 12-char +SSE frame → a ~90 s stream, a guaranteed mid-stream hidden window), on a +scratch Postgres DB (`bor_repro73`) so no owner data was touched. + +Method: two REAL tabs in ONE window (second tab opened via +`window.open`, tab switched via CDP `Target.activateTarget` / +`Page.bringToFront` — verified real by the `document.visibilityState` +transitions). In-page instrumentation (temporary, removed — no repo +changes): `pagehide`/`pageshow`/`visibilitychange`/`freeze`/`resume`/ +`beforeunload`/window focus/blur events with timestamps; a 400 ms +recorder (visibility, `hasFocus`, live-bubble text length = frame +arrivals, status/banner/button text); CDP `Network.*` lifecycle of +`POST /api/chat`; `performance.getEntriesByType('resource')`; +localStorage `bor.chat.v1`; server (uvicorn) log. + +## Scenario A — mid-stream real tab switch, 65 s hidden (main repro) + +`task01_A_evidence.json`, screenshots `task01_A_0…5_*.png`, +server log `server_A.log`. + +1. Long answer started; at ~7 s (bubble ≈ 460 chars, `streaming`) the + driver switched to the other tab. Tab A went `hidden` — exactly ONE + `visibilitychange {state:"hidden"}` event, at the switch. +2. **While hidden (65 s) the answer kept generating at full wire rate**: + the live bubble grew linearly 456 → 4141 chars (≈ 58 chars/s = the + stream's 12 chars / 0.2 s frame pace) — SSE frames kept arriving the + entire time; no stall, no drop, no error copy, no banner. + (The 400 ms recorder cadence never degraded — no background timer + throttling was observed in this XWayland/KWin environment; noted as an + environment property, not an app defect.) +3. Returned to the tab at ~72 s: `visibilitychange {state:"visible"}`; + the turn settled ~18 s later — button back to "Send", no banner. +4. `bor.chat.v1`: exactly ONE brain turn (the full 5 379-char answer, + ending `LONG-ANSWER-END`) for the one question. +5. **`pagehide` did NOT fire** on the tab switch (nor `freeze`/`resume`/ + `beforeunload`/`pageshow`). In real-mode Chromium 151, a merely-hidden + tab fires only `visibilitychange`. +6. Network: `POST /api/chat` → `requestWillBeSent` → + `responseReceived (200)` → `loadingFinished`. **No `loadingFailed`** + (verified on a clean re-probe: the earlier duplicate/failed entries + were a bug in the repro's own CDP event router, not the browser). +7. Server: the turn's settle line shows `total_ms=90143/90145` — the + server streamed the FULL 90 s to the hidden tab; there is **NO + `chat: turn cancelled`** line for this turn (the phase-48 line that + would prove a real consumer departure). + +**⇒ In the test browser, a tab switch does NOT stop the answer (C3 and +C4 ruled out; C1's trigger did not occur; the guard was already cleared +by the first frame, so C2 was not on the path).** + +## Scenario C — C1 double-record path (synthetic `pagehide` mid-stream) + +`task01_C_evidence.json`, screenshots `task01_C_1…3_*.png`. + +Chromium does not fire `pagehide` on a tab switch, but browsers that DO +(e.g. Safari, which bfcaches/freeze-then-`pagehide`s hidden tabs) would +run the app's `pagehide` handler (`frontend/assets/app.js` ~L2162) +mid-turn. Dispatching a synthetic `PageTransitionEvent('pagehide', +{persisted:true})` at ~7 s into the stream (bubble ≈ 327 chars) — the +EXACT code path a real `pagehide` executes — then letting the turn +complete: + +- `bor.chat.v1` ended with **TWO brain turns for ONE question**: + the 336-char partial (the pagehide persist) AND the full 5 379-char + answer (the `done` persist). +- After a reload, the restore renders BOTH: user → brain (327) → brain + (5 228) — the duplicated / "truncated-looking" conversation the bug + report describes. + +**⇒ C1's corruption branch is real and deterministic whenever the +browser fires `pagehide` on a merely-hidden tab; it never double-persists +in Chromium because Chromium never fires that event for a tab switch. +This is the branch task 02 hardens unconditionally.** + +## Scenario B — C2 probe: the 120 s guard in a hidden pre-token window + +`task01_B_evidence.json`, screenshots `task01_B_1…3_*.png`. + +The proxy was re-run holding the FIRST frame for 130 s (pre-token +silence > `TURN_TIMEOUT_MS`). The tab was switched away at ~7 s and +stayed hidden past the guard's deadline: + +- Probes every 10 s while hidden: no banner through t≈117 s; at + t≈127 s the button had returned to "Send" and the banner read + **"That's taking a long time — the answer may be stuck."** — the guard + fired at its 120 s deadline **during the hidden window** and errored + the turn. +- The first frame would have arrived at t≈130 s — too late: the guard + had already aborted the fetch. On return the error banner is still up; + the user perceives "switching tabs killed the answer", but the trigger + is the pre-token silence, not the switch. +- `bor.chat.v1` holds only the user message (pre-token abort persists + nothing brain-side — phase-20 convention). +- Server: `chat: turn cancelled … total_ms=119999` — the cancellation is + the CLIENT's guard abort (client-initiated), not a browser/proxy drop + of the hidden tab. + +**⇒ C2 is confirmed as a real, conditional stop path: any turn whose +first frame takes > 120 s errors out if the tab is hidden at the 120 s +mark (the guard is a plain `setTimeout` with no visibility awareness; +where a browser DOES throttle background timers, its fire time drifts +relative to token arrival, as the C2 branch describes).** + +## Decision-tree verdict + +- **C1 — `pagehide` on tab switch:** did NOT fire in the test browser + (Chromium 151 real mode fires only `visibilitychange` for a hidden + tab). Its double-record corruption path was nonetheless demonstrated + deterministically (synthetic `pagehide`) — latent in browsers that do + fire `pagehide` on hide (e.g. Safari); the trigger is + browser-dependent, so task 02's fix applies unconditionally. +- **C2 — 120 s guard while hidden:** CONFIRMED to fire (scenario B) in + the pre-token-only window, erroring the turn with the "stuck" copy. +- **C3 — real connection cancel:** ruled out (no `turn cancelled` for + the hidden-window turn; `loadingFinished`, no `loadingFailed`; full + 90 s server-side stream completed). +- **C4 — none of the above:** in the test browser a merely-hidden tab + did NOT stop the answer — it kept generating at full rate and + completed on return. The owner's symptom did not reproduce on + Chromium 151 desktop; the reproducible stop paths are C2 (slow + pre-token + hidden) and C1's corruption (browsers that fire + `pagehide` on hide, e.g. Safari — where a hidden tab is also the + likelier place for the stream to actually pause). + +**One-line root cause (for the phase-73 commit message body):** +`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.` + +## Cleanup + +- No permanent code changes: `git status` shows only this (untracked) + evidence directory; all instrumentation lived in throwaway scripts + under `/tmp/repro73/` and in the browser profiles. +- Scratch DB `bor_repro73` dropped; repro stack (mock 8901 / proxy 8900 + / app 8123) terminated. diff --git a/frontend/assets/app.js b/frontend/assets/app.js index 5112be1..d022638 100644 --- a/frontend/assets/app.js +++ b/frontend/assets/app.js @@ -242,6 +242,25 @@ * a successful auto-save re-stamp (both make the row/conversation no * longer the one the banner describes). * + * A hidden tab never stops a turn (phase 73, TODO.md L3): a merely-HIDDEN + * tab (switched away from) keeps the stream filling the live bubble and + * the turn completes when the user returns — only tab close, real + * navigation, or the Stop button aborts (the phase-48 teardown contract, + * untouched). Two hardenings: (1) the pagehide partial-persist (phase 20) + * is CORRELATED with the turn's settle — `leavePartialIndex` records the + * index of the brain record the pagehide handler pushed for this turn, + * and the done/stop settle REPLACES that entry in place (identity-guarded + * on the record still being a brain record) instead of appending a second + * brain turn, so the saved record holds exactly one brain turn per + * question even on browsers that fire pagehide on a merely-hidden tab + * (e.g. Safari; Chromium fires only visibilitychange — task 01); a REAL + * navigation never runs a settle, so the leave-save is unchanged there. + * (2) The 120s pre-token guard counts only VISIBLE time: when the tab + * returns to visible with the guard still armed (it clears on the first + * thinking/delta/retry frame), it re-arms with a fresh TURN_TIMEOUT_MS — + * a slow first frame arriving while the tab was hidden past the deadline + * no longer errors the turn (task 01, C2 confirmed). + * * All DOM ids match frontend/index.html. */ @@ -943,6 +962,7 @@ let uiState = UI_STATE.idle; let thinkingClock = 0; // setInterval id — elapsed-seconds hint let thinkingStart = 0; // Date.now() when "thinking" began let turnTimeout = 0; // setTimeout id — 120s pre-token guard +let turnTimeoutCb = null; // the guard's callback — lets visibilitychange re-arm it (phase 73) /* Turn accumulators + the navigate-away flag (phase 20, owner choice * 2026-08-24 A1): module scope because the `pagehide` handler reads them * while a turn is still in flight; reset per turn at the top of @@ -950,6 +970,18 @@ let turnTimeout = 0; // setTimeout id — 120s pre-token guard let acc = ""; // accumulated answer text this turn let thinkingAcc = ""; // accumulated thinking text (persisted with the turn) let persistedOnLeave = false; // pagehide partial-persist at most once +/* Phase 73 (task 02, TODO.md L3): the pagehide partial is CORRELATED with + * the turn's settle. `leavePartialIndex` is the index in `conversation` + * of the brain record the `pagehide` handler pushed for THIS turn (else + * -1): when the turn later settles (done | stop), its final record + * REPLACES that entry in place (rememberBrainTurn's in-place mode) instead + * of appending a second brain record — one brain turn per question, even + * on browsers that fire pagehide on a merely-hidden tab (C1, task 01). + * Turn-local: reset at the top of runTurn, written only by the pagehide + * handler. The replace is identity-guarded (the index must still point at + * a brain record) — a New-Chat click or restore between pagehide and + * settle falls back to the append. */ +let leavePartialIndex = -1; // index of this turn's pagehide partial (-1 = none) /* Phase 48 (2026-08-29, TODO.md L3): the user-stop machinery. * `turnAbort` owns the in-flight fetch (the Stop button aborts it; the * 120s guard aborts the same controller as its backstop); `stoppedByUser` @@ -981,6 +1013,7 @@ function startThinkingClock() { function armTurnTimeout(onTimeout) { clearTurnTimeout(); + turnTimeoutCb = onTimeout; turnTimeout = setTimeout(onTimeout, TURN_TIMEOUT_MS); } @@ -989,8 +1022,27 @@ function clearTurnTimeout() { clearTimeout(turnTimeout); turnTimeout = 0; } + turnTimeoutCb = null; } +/* Phase 73 (task 02; task 01 C2 — confirmed): a merely-HIDDEN tab must + * never stop a turn, but the 120s pre-token guard is a plain setTimeout, + * so hidden time counted toward it: a turn whose first frame lands while + * the tab is hidden past the 120s mark errored with the "stuck" copy + * (the user perceives "switching tabs killed the answer"). When the tab + * returns to VISIBLE with the guard still armed (it is only armed in the + * pre-token window — cleared on the first thinking/delta/retry frame and + * on every terminal transition), re-arm it with a FRESH TURN_TIMEOUT_MS: + * only visible pre-token time counts. While hidden the timer simply runs + * (and the stream itself keeps arriving at full rate — task 01 scenario + * A); real departures (close / navigation / Stop) still abort the fetch + * (phase 48, untouched). */ +document.addEventListener("visibilitychange", () => { + if (document.visibilityState === "visible" && turnTimeout && turnTimeoutCb) { + armTurnTimeout(turnTimeoutCb); + } +}); + /* The single entry point for chat feedback. Every in-flight state has a * visible indicator; every terminal state returns the button to "Send". * Phase 48 (owner-locked 2026-08-29): the button is ONE control with two @@ -1669,13 +1721,28 @@ async function regenerateStaleChat() { Phase 17: meta.thinking and phase 37: meta.tools are optional — `undefined` drops the key from the JSON, so turns without them persist exactly as before. An empty answer keeps the fallback/"…" text that - was actually rendered — what the user saw is what is stored. */ -function rememberBrainTurn(rawText, meta) { - conversation.push({ who: "brain", text: rawText || "…", ...meta }); + was actually rendered — what the user saw is what is stored. + Phase 73 (task 02): optional in-place mode — `replaceIndex` >= 0 + REPLACES the record at that index instead of appending, so a settle + that follows a pagehide partial (C1) keeps exactly one brain turn per + question. Identity-guarded: the replace only fires when the recorded + index STILL points at a brain record (a New-Chat click or restore + between pagehide and settle — impossible today, but the guard makes + the invariant explicit) — otherwise it falls back to the append. + Either way the record is written once and the save points below run + once (the auto-save refreshes the row exactly once). */ +function rememberBrainTurn(rawText, meta, replaceIndex = -1) { + const rec = { who: "brain", text: rawText || "…", ...meta }; + if (replaceIndex >= 0 && conversation[replaceIndex]?.who === "brain") { + conversation[replaceIndex] = rec; + } else { + conversation.push(rec); + } saveConversation(); // Phase 55 (A2): the auto-save rides the brain save point — the row - // updates with the new brain turn + metadata. The pagehide partial - // reuses this helper, so it rides the same path (no extra wiring). + // updates with the (possibly replaced) brain turn + metadata. The + // pagehide partial reuses this helper, so it rides the same path (no + // extra wiring). persistConversation(); } @@ -1874,10 +1941,13 @@ async function runTurn(text, { reask = false } = {}) { let aborted = false; // the 120s guard already took the turn to error // Phase 20: acc / thinkingAcc / persistedOnLeave live at module scope // (the pagehide handler reads them) but reset here, so they stay - // turn-scoped exactly like the other turn locals. + // turn-scoped exactly like the other turn locals. Phase 73: + // leavePartialIndex joins them — no pagehide partial exists for this + // turn yet (the pagehide handler records it if one lands). acc = ""; thinkingAcc = ""; persistedOnLeave = false; + leavePartialIndex = -1; // Phase 48: a fresh abort owner per turn (cleared in the finally); the // stop flag resets with the rest of the turn locals. turnAbort = new AbortController(); @@ -2040,13 +2110,16 @@ async function runTurn(text, { reask = false } = {}) { // complete (raw text + the done metadata; phase 17: + optional // thinking, phase 37: + optional tools — `undefined` drops the // key from the JSON). + // Phase 73 (task 02): if a pagehide partial landed mid-turn, the + // final record REPLACES it in place (leavePartialIndex = -1 when + // there was none — the append, exactly as before). rememberBrainTurn(finalText || acc, { thinking: thinkingAcc || undefined, tools: toolAcc.length ? toolAcc : undefined, deflected: !!ev.deflected, sources: ev.sources, suggestions: ev.suggestions, - }); + }, leavePartialIndex); lastBrainWrap = wrap; // this bubble is now the last brain answer markLastRetryable(); // phase 49: the Retry button is last-bubble-only } else if (ev.type === "error") { @@ -2068,7 +2141,10 @@ async function runTurn(text, { reask = false } = {}) { const fwrap = addMessage("brain", fallback); appendTuneButton(fwrap); appendSaveAsDocButton(fwrap, fallback); // phase 59: parity with the done path - rememberBrainTurn(fallback, {}); // persist what the user actually saw + // Phase 73: correlated like the other settles — unreachable when a + // pagehide partial exists (that needs acc, which means a wrap), but + // passed so EVERY settle write goes through the same correlation. + rememberBrainTurn(fallback, {}, leavePartialIndex); // persist what the user actually saw lastBrainWrap = fwrap; markLastRetryable(); // phase 49: the fallback bubble is retryable too } @@ -2088,11 +2164,14 @@ async function runTurn(text, { reask = false } = {}) { persistedOnLeave = true; appendTuneButton(wrap); // admin-only; parity with the restore path appendStoppedNote(wrap); + // Phase 73 (task 02): the stopped partial REPLACES a pagehide + // partial (leavePartialIndex) in place — one brain turn for the + // question, marked stopped, never two records. rememberBrainTurn(acc, { thinking: thinkingAcc || undefined, tools: toolAcc.length ? toolAcc : undefined, stopped: true, - }); + }, leavePartialIndex); lastBrainWrap = wrap; // the stopped partial is the prime retry candidate markLastRetryable(); // phase 49: Retry on the stopped partial } @@ -2158,7 +2237,12 @@ staleRegenBtn?.addEventListener("click", regenerateStaleChat); * Thinking-only (no answer tokens yet) persists nothing brain-side: * the question is already saved on send and the user can re-ask. * `persistedOnLeave` makes this idempotent across pagehide/bfcache - * churn. */ + * churn. + * Phase 73 (task 02): the partial is CORRELATED with the turn's settle — + * after the push, `leavePartialIndex` records the record's index, so the + * done/stop settle REPLACES it in place (one brain turn per question, + * C1). A REAL navigation (the page actually unloads) never runs a settle, + * so the partial stays persisted exactly as before. */ window.addEventListener("pagehide", () => { if (persistedOnLeave) return; if (uiState !== UI_STATE.thinking && uiState !== UI_STATE.streaming) @@ -2166,6 +2250,7 @@ window.addEventListener("pagehide", () => { if (!acc) return; // nothing brain-side to save yet persistedOnLeave = true; rememberBrainTurn(acc, { thinking: thinkingAcc || undefined }); + leavePartialIndex = conversation.length - 1; // the record it just pushed }); /* Boot: auth state FIRST — it decides whether the restored conversation diff --git a/tests/e2e/test_hidden_tab_stream.py b/tests/e2e/test_hidden_tab_stream.py new file mode 100644 index 0000000..6d16eb9 --- /dev/null +++ b/tests/e2e/test_hidden_tab_stream.py @@ -0,0 +1,500 @@ +"""Phase 73 E2E (Playwright): a hidden tab never stops a generating answer. + +Source: ``TODO.md`` L3 — "Clicking on another tab while an answer is +generating stops that answer from being generated. Reponses should +continue to generate unless you outright close the tab." +Run in isolation (DB must be up: ``podman compose up -d db``): + + uv run pytest tests/e2e/test_hidden_tab_stream.py -v --no-cov + +Real tab-switching is browser-environment-specific, so the suite +dispatches the synthetic hidden-``visibilityState`` + ``pagehide`` / +``pageshow`` sequence from the task file — the exact events the +browsers that fire ``pagehide`` on a merely-hidden tab deliver (e.g. +Safari; task 01: Chromium 151 real mode fires only +``visibilitychange``, so the C1 branch is latent there). Against the +deterministic mock LLM (the ~8 s long stream gives a guaranteed +mid-stream window) the pins are: + +1. ``test_hidden_tab_does_not_stop_the_answer`` — a synthetic + ``pagehide`` mid-turn never stops the answer: the bubble completes + with the FULL mock answer (``LONG-ANSWER-END`` included), no error + banner, the ``bor.chat.v1`` record holds EXACTLY ONE brain turn — + the pagehide partial is REPLACED in place by the ``done`` settle + (task 01's C1 double-record corruption stays pinned dead), the + auto-saved ``saved_chats`` row (admin context, the + ``persistConversation`` path) carries the same single brain turn, + and the server settled the turn (one ``query_log`` row — no + phase-48 ``turn cancelled`` teardown for a merely-hidden tab). +2. ``test_reload_after_hidden_tab_restores_one_bubble`` — the same + mid-stream pagehide, then a reload: the restore renders exactly + one brain bubble for the question (a C1 double-record would render + two). +3. ``test_baseline_no_pagehide_still_completes`` — the same long + question with NO dispatched events completes identically (guards + against an over-eager fix changing the normal path). +4. ``test_pre_token_guard_survives_hidden_window`` — task 01's C2 + (confirmed): hidden time must not count toward the 120 s pre-token + guard. Playwright's fake clock makes the guard's deadline + deterministic: the clock is fast-forwarded past the guard's + ORIGINAL 120 s deadline while the tab is (synthetically) hidden, + with a return to visible in between — the phase-73 re-arm gives the + still-armed guard a FRESH ``TURN_TIMEOUT_MS``, so the turn still + settles with the answer. Without the re-arm the fast-forwarded + original timer fires with the "stuck" error — the test + discriminates. The task's suggested trigger + (``think out loud then hesitate``) cannot exercise the re-arm: it + streams its scratchpad FIRST, and the first thinking frame clears + the guard — its 4 s pause sits in a post-clear window. + ``pretend to think slowly`` (the phase-06 phrasing, + ``test_stop_generation.py``'s SLOW_QUESTION) is the mock's only + PURE pre-token silence (3 s, zero frames) — the guard stays armed + the whole window. + +The phase-48 teardown contract is covered by the regression runs +(``test_stop_generation.py``, ``test_chat_persistence.py``) — real +Stop / close / navigation still cancel the fetch. +""" +from __future__ import annotations + +import asyncio +import json +import re +import time +from pathlib import Path +from threading import Thread +from typing import Any + +import httpx +from playwright.sync_api import Locator, Page, expect +from sqlalchemy import text + +from app.config import Settings +from app.db import SessionLocal +from app.rag.importer import ImportSummary, import_sources +from app.rag.llm import LLMClient +from e2e.auth_helpers import login +from e2e.mock_llm import LONG_ANSWER_LINES, long_answer + +REPO = Path(__file__).resolve().parents[2] +FIXTURES = REPO / "tests" / "fixtures" / "docs" + +#: The phase-11 on-topic long-answer phrasing (house pattern, +#: ``test_stop_generation.py``): the honesty gate is HIGH and the +#: ~900-word answer streams for ~8 s (12 chars / 0.02 s) — the +#: guaranteed mid-stream window. +LONG_QUESTION = "How is my Kubernetes cluster set up? write a long answer" +#: The mock's byte-stable long answer — the EXACT string the stream +#: delivers, so "the full answer" is an exact comparison, not a +#: contains check. +LONG_ANSWER = long_answer() +LONG_ANSWER_END = "LONG-ANSWER-END" + +#: The mock's only pure pre-token silence (phase-06 phrasing): a 3 s +#: delay before the FIRST frame, so the 120 s pre-token guard stays +#: armed the whole window (no thinking/delta/retry frame to clear it). +SLOW_QUESTION = "pretend to think slowly then tell me about kubernetes" +MOCK_ANSWER_MARKER = "Deterministic mock answer for E2E" + +STORAGE_KEY = "bor.chat.v1" +# The typing indicator is itself a .msg.brain — exclude its bubble. +ANSWER = ".msg.brain .bubble:not(.typing)" + +#: The synthetic tab-switch sequence (task file): the exact events a +#: browser that fires ``pagehide`` on a merely-hidden tab delivers — +#: the visibility transition (the app's only visibility listener is +#: the phase-73 guard re-arm) + the PageTransitionEvents, with +#: ``persisted: false`` (a tab switch is not a bfcache navigation). +HIDE_JS = """ +() => { + Object.defineProperty(document, "visibilityState", { configurable: true, get: () => "hidden" }); + document.dispatchEvent(new Event("visibilitychange")); + window.dispatchEvent(new PageTransitionEvent("pagehide", { persisted: false })); +} +""" +SHOW_JS = """ +() => { + Object.defineProperty(document, "visibilityState", { configurable: true, get: () => "visible" }); + document.dispatchEvent(new Event("visibilitychange")); + window.dispatchEvent(new PageTransitionEvent("pageshow", { persisted: false })); +} +""" + +# --------------------------------------------------------------------------- +# KB seeding (house pattern: TRUNCATE-then-import) +# --------------------------------------------------------------------------- + + +async def _import_fixtures(mock_port: int) -> ImportSummary: + kwargs: dict[str, Any] = {"_env_file": None, "llm_base_url": f"http://127.0.0.1:{mock_port}/v1"} + settings = Settings(**kwargs) # pyright: ignore[reportCallIssue] + return await import_sources([FIXTURES], LLMClient(settings)) + + +def _run_in_thread(coro: Any) -> Any: + """Run a coroutine on a worker thread. + + Playwright's sync API keeps an asyncio loop running on the test thread, + so ``asyncio.run`` cannot be called directly from a test body. + """ + box: dict[str, Any] = {} + + def runner() -> None: + try: + box["value"] = asyncio.run(coro) + except BaseException as e: # noqa: BLE001 — re-raised on the test thread + box["error"] = e + + t = Thread(target=runner) + t.start() + t.join() + if "error" in box: + raise box["error"] + return box["value"] + + +def _reset_db(mock_port: int) -> ImportSummary: + """House reset + the prompt-shaping tables: steering notes and the + KB overview would otherwise append deterministic suffixes to every + mock answer and break the exact-text assertions. ``saved_chats`` + is NOT touched (rows persist across suites; test 1 cleans up its + own row).""" + with SessionLocal() as db: + db.execute( + text("TRUNCATE chunks, documents, query_log, steering_notes, kb_overview") + ) + db.commit() + return _run_in_thread(_import_fixtures(mock_port)) + + +def _query_log_count() -> int: + with SessionLocal() as db: + return db.execute(text("SELECT count(*) FROM query_log")).scalar_one() + + +# --------------------------------------------------------------------------- +# Shared flows +# --------------------------------------------------------------------------- + + +def _stored_parsed(page: Page) -> dict[str, Any]: + raw = page.evaluate(f"() => localStorage.getItem('{STORAGE_KEY}')") + assert raw is not None, "the conversation key must exist in localStorage" + return json.loads(raw) + + +def _assert_no_error_banner(page: Page) -> None: + """Neither error copy may be up: the "stuck" guard copy (C2) or the + stream-drop copy — a merely-hidden tab settles to idle like a + normal turn.""" + banner = page.locator("#kb-banner") + expect(banner).to_be_hidden() + expect(banner).not_to_have_attribute("role", "alert") + expect(banner).not_to_have_class(re.compile(r"is-error")) + + +def _ask_long(page: Page) -> None: + page.fill("#message-input", LONG_QUESTION) + page.click("#send-btn") + expect(page.locator(".msg.user .bubble").last).to_contain_text(LONG_QUESTION) + + +def _wait_streaming(page: Page) -> Locator: + """Wait until answer text is visibly streaming (a few delta frames + rendered — the task's mid-stream moment, well inside the ~8 s + stream).""" + answer = page.locator(ANSWER) + answer.wait_for(state="visible", timeout=30_000) + partial = "" + deadline = time.monotonic() + 15 + while time.monotonic() < deadline: + partial = answer.inner_text() + if len(partial.split()) >= 8: + break + time.sleep(0.05) + assert len(partial.split()) >= 8, "no answer deltas before the tab switch" + # In flight at the switch: the button IS the enabled Stop control. + expect(page.locator("#send-label")).to_have_text("Stop") + expect(page.locator("#send-btn")).to_have_class(re.compile(r"is-stop")) + return answer + + +def _wait_done(page: Page, answer: Locator) -> str: + """Wait for the ``done`` settle: the Send button is back and the + bubble carries the unique final line — no error banner on the way.""" + expect(page.locator("#send-label")).to_have_text("Send", timeout=30_000) + expect(page.locator("#send-btn")).not_to_have_class(re.compile(r"is-stop")) + expect(answer).to_contain_text(LONG_ANSWER_END, timeout=30_000) + _assert_no_error_banner(page) + return answer.inner_text() + + +def _assert_full_answer(text: str) -> None: + """The bubble carries the FULL mock answer — every one of the 40 + numbered steps plus the unique final line (a truncated stream + would be missing its tail).""" + for i in range(1, LONG_ANSWER_LINES + 1): + assert f"Step {i}: configure node-{i}" in text, f"step {i} missing from the answer" + assert LONG_ANSWER_END in text + + +def _assert_one_brain_turn(page: Page, full: bool) -> dict[str, Any]: + """The C1 corruption pin: EXACTLY ONE brain turn for the question. + + With ``full`` the record's text must be the complete mock answer + byte-for-byte (the ``done`` settle's record); otherwise it is the + pagehide partial (a true prefix of the full answer — its final + line never arrived). + """ + stored = _stored_parsed(page) + assert stored["v"] == 1 + whos = [m["who"] for m in stored["messages"]] + assert whos == ["user", "brain"], ( + "exactly ONE brain turn for the question " + f"(the pagehide partial must be replaced, never duplicated): {whos}" + ) + assert stored["messages"][0]["text"] == LONG_QUESTION + brain = stored["messages"][1] + if full: + assert brain["text"] == LONG_ANSWER, "the record's text is the FULL answer" + assert brain.get("deflected") is False, "the done metadata rides the record" + else: + # The pagehide partial carries no done metadata (the turn never + # settled when it was written) — only who + text. + assert "deflected" not in brain + return brain + + +def _admin_cookies(page: Page) -> dict[str, str]: + """The signed session cookies the browser holds after a form login — + used to call the admin API with plain httpx (the test's API side + sees exactly what the signed-in browser sees).""" + return {c["name"]: c["value"] for c in page.context.cookies() if "name" in c and "value" in c} + + +def _delete_rows_by_title(app_url: str, cookies: dict[str, str], title: str) -> None: + """Best-effort cleanup of the auto-saved row (a 404 is fine).""" + r = httpx.get(f"{app_url}/api/chats", timeout=10, cookies=cookies) + if r.status_code != 200: + return + for c in r.json()["chats"]: + if c["title"] == title: + httpx.delete(f"{app_url}/api/chats/{c['id']}", timeout=10, cookies=cookies) + + +def _wait_row_full(app_url: str, cookies: dict[str, str], title: str) -> dict[str, Any]: + """Poll the auto-saved row until it carries the full answer as a + single brain turn (the ``done`` settle's fire-and-forget + ``persistConversation`` PUT is the last writer).""" + deadline = time.monotonic() + 15 + last: list[dict[str, Any]] = [] + while time.monotonic() < deadline: + r = httpx.get(f"{app_url}/api/chats", timeout=10, cookies=cookies) + rows = ( + [c for c in r.json()["chats"] if c["title"] == title] + if r.status_code == 200 + else [] + ) + for c in rows: + row = httpx.get(f"{app_url}/api/chats/{c['id']}", timeout=10, cookies=cookies).json() + brains = [m for m in row["messages"] if m["who"] == "brain"] + if len(brains) == 1 and brains[0]["text"] == LONG_ANSWER: + return row + last = [row] + time.sleep(0.2) + raise AssertionError( + "the auto-saved row never held the full answer as exactly one brain turn; last: " + f"{last!r}" + ) + + +# --------------------------------------------------------------------------- +# 1. Hidden tab mid-stream: the answer completes exactly once, the +# record holds one brain turn +# --------------------------------------------------------------------------- + + +def test_hidden_tab_does_not_stop_the_answer( + page: Page, app_url: str, mock_llm: int, db_ready: None +) -> None: + summary = _reset_db(mock_llm) + assert summary is not None and summary.added == 13 # A9 formats (phase 47 added quadlet+j2) + page.set_default_timeout(30_000) + # Admin login: the auto-save row (the persistConversation path) is + # reachable, so the saved-chat side gets pinned too. + login(page, app_url, next="/") + cookies = _admin_cookies(page) + _delete_rows_by_title(app_url, cookies, LONG_QUESTION) # stale rows from crashed runs + + _ask_long(page) + answer = _wait_streaming(page) + + # Mid-stream: the exact tab-switch event sequence (task file). + page.evaluate(HIDE_JS) + + # The pagehide partial landed: EXACTLY ONE brain turn — the partial + # (a true prefix of the full answer; its final line never arrived). + # This is the record the C1 bug would have LEFT ALONGSIDE the full + # answer (two brain turns for one question). + partial = _assert_one_brain_turn(page, full=False) + assert partial["text"], "the partial must carry the streamed text" + assert partial["text"] in LONG_ANSWER, "the partial is a prefix of the full answer" + assert LONG_ANSWER_END not in partial["text"], "the final line had not arrived yet" + + # Return to visible — the stream keeps filling the live bubble and + # the turn settles. + page.evaluate(SHOW_JS) + done_text = _wait_done(page, answer) + _assert_full_answer(done_text) + + # The ``done`` settle REPLACED the partial in place: one brain + # turn, and its text is the full answer. + _assert_one_brain_turn(page, full=True) + + # Server side: the turn SETTLED — one query_log row, so no + # phase-48 "turn cancelled" teardown fired for a merely-hidden tab. + assert _query_log_count() == 1 + + # Auto-save (admin): the row carries the same single full brain + # turn (the shared record shape). + try: + row = _wait_row_full(app_url, cookies, LONG_QUESTION) + brains = [m for m in row["messages"] if m["who"] == "brain"] + assert len(brains) == 1, "the saved row holds exactly one brain turn" + assert brains[0]["text"] == LONG_ANSWER + finally: + _delete_rows_by_title(app_url, cookies, LONG_QUESTION) + + +# --------------------------------------------------------------------------- +# 2. Reload after the hidden tab: exactly one brain bubble restores +# --------------------------------------------------------------------------- + + +def test_reload_after_hidden_tab_restores_one_bubble( + page: Page, app_url: str, mock_llm: int, db_ready: None +) -> None: + _reset_db(mock_llm) + page.set_default_timeout(30_000) + page.goto(app_url) + + _ask_long(page) + answer = _wait_streaming(page) + page.evaluate(HIDE_JS) + page.evaluate(SHOW_JS) + done_text = _wait_done(page, answer) + _assert_full_answer(done_text) + _assert_one_brain_turn(page, full=True) + + # The restore path re-renders the bor.chat.v1 record: a C1 + # double-record (partial + full) would render TWO brain bubbles. + page.reload() + expect(page.locator("#empty-state")).to_be_hidden() + expect(page.locator(".msg.user .bubble")).to_have_count(1) + expect(page.locator(".msg.user .bubble").first).to_contain_text(LONG_QUESTION) + expect(page.locator(ANSWER)).to_have_count(1) + restored = page.locator(ANSWER).first + _assert_full_answer(restored.inner_text()) + _assert_no_error_banner(page) + expect(page.locator("#send-label")).to_have_text("Send") + + # The record the restore read: still exactly one brain turn, full + # text (the restore is read-only). + _assert_one_brain_turn(page, full=True) + + +# --------------------------------------------------------------------------- +# 3. Baseline: the same long question, NO dispatched events +# --------------------------------------------------------------------------- + + +def test_baseline_no_pagehide_still_completes( + page: Page, app_url: str, mock_llm: int, db_ready: None +) -> None: + """The normal path, untouched by the fix: the long answer completes + identically without any synthetic tab-switch events (guards against + an over-eager fix changing the ordinary settle).""" + _reset_db(mock_llm) + page.set_default_timeout(30_000) + page.goto(app_url) + + _ask_long(page) + answer = _wait_streaming(page) + done_text = _wait_done(page, answer) + _assert_full_answer(done_text) + _assert_one_brain_turn(page, full=True) + assert _query_log_count() == 1 + + +# --------------------------------------------------------------------------- +# 4. C2 (task 01, confirmed): the pre-token guard survives a hidden +# window — hidden time does not count toward TURN_TIMEOUT_MS +# --------------------------------------------------------------------------- + + +def test_pre_token_guard_survives_hidden_window( + page: Page, app_url: str, mock_llm: int, db_ready: None +) -> None: + """The 120 s pre-token guard is a plain ``setTimeout`` — without the + phase-73 visibility re-arm, hidden time counts toward it and a turn + whose first frame lands past the 120 s mark errors with the "stuck" + copy (task 01 scenario B, C2 confirmed). The fake clock makes the + deadline deterministic (waiting 120 s of real time is not an + option for a regression suite): the mock's 3 s real-time pre-token + silence keeps the guard armed while the FAKE clock is fast-forwarded + across the original deadline — with a return to visible in between, + which re-arms the still-armed guard with a fresh TURN_TIMEOUT_MS. + + Timeline (fake clock, the guard armed at t=0, deadline t=120 s): + + * t=0 — the slow question is sent; the guard arms (t=120 s); + * t~0 — the tab goes hidden (synthetic; pre-token, so the + pagehide handler persists nothing — the question is + already saved); + * t=115 — fast-forward while hidden: the original timer (120 s) + is not due yet; + * t=115 — back to visible: the re-arm fires (the guard is still + armed — no frame has arrived) → new deadline t=235 s; + * t=229 — fast-forward again: PAST the original 120 s deadline — + without the re-arm the guard fires HERE with the "stuck" + error — but short of the re-armed 235 s deadline. + + Meanwhile (real time, ~3.5 s after the send) the mock's first frame + lands, clears the guard for good, and the turn settles with the + full answer. + """ + _reset_db(mock_llm) + page.set_default_timeout(30_000) + + # The fake clock BEFORE the first navigation: every app timer (the + # 120 s guard among them) becomes test-controlled, while the mock's + # real-time stream is unaffected (the network is not a timer). + page.clock.install() + page.goto(app_url) + + page.fill("#message-input", SLOW_QUESTION) + page.click("#send-btn") + expect(page.locator("#send-label")).to_have_text("Stop", timeout=30_000) + # The pre-token window: no answer frame yet (the mock's 3 s real + # silence is running) — the armed guard is the only thing that can + # now stop the turn. + expect(page.locator(ANSWER)).to_have_count(0) + + page.evaluate(HIDE_JS) + page.clock.fast_forward(115_000) + page.evaluate(SHOW_JS) # the re-arm: a fresh TURN_TIMEOUT_MS + page.clock.fast_forward(114_000) # past 120 s, short of the re-armed 235 s + + # The turn still settles with the full answer — no "taking a long + # time" error, no aborted stream. + answer = page.locator(ANSWER) + expect(answer).to_contain_text(MOCK_ANSWER_MARKER, timeout=30_000) + expect(page.locator("#send-label")).to_have_text("Send", timeout=30_000) + _assert_no_error_banner(page) + + # One brain turn for the question — the settled answer (pre-token + # hidden time persisted nothing, as the phase-20 convention says). + stored = _stored_parsed(page) + assert [m["who"] for m in stored["messages"]] == ["user", "brain"] + assert stored["messages"][0]["text"] == SLOW_QUESTION + assert MOCK_ANSWER_MARKER in stored["messages"][1]["text"] diff --git a/tests/unit/test_frontend_hidden_tab.py b/tests/unit/test_frontend_hidden_tab.py new file mode 100644 index 0000000..a74f712 --- /dev/null +++ b/tests/unit/test_frontend_hidden_tab.py @@ -0,0 +1,217 @@ +"""Unit: a hidden tab never stops a turn (phase 73, task 02). + +The JS behavior itself is E2E-covered (tests/e2e/test_hidden_tab_stream.py, +task 03); here we pin the app.js mechanisms the story depends on — the +pagehide-partial ↔ settle correlation (C1 hardening, unconditional) and the +visibility-aware pre-token guard (task 01, C2 confirmed) — so a silent +regression in app.js is caught without a browser (house pattern: +tests/unit/test_frontend_feedback.py). +""" +from __future__ import annotations + +import re +from pathlib import Path + +FRONTEND = Path(__file__).resolve().parents[2] / "frontend" +APP_JS = FRONTEND / "assets" / "app.js" + + +def _js() -> str: + return APP_JS.read_text(encoding="utf-8") + + +# ---------- C1: the pagehide partial is replaced, never duplicated ---------- + + +def test_leave_partial_index_is_a_module_turn_local() -> None: + """`leavePartialIndex` is a module-scope turn local (like + persistedOnLeave): declared -1, reset at the top of runTurn, and + written ONLY by the pagehide handler (the one `= conversation.length + - 1` assignment). No other code may move the correlation.""" + js = _js() + assert "let leavePartialIndex = -1" in js, "module-scope declaration" + # The two -1 writes are the declaration and the runTurn reset. + assert js.count("leavePartialIndex = -1;") == 2, ( + "only the declaration and the runTurn reset write -1" + ) + # The one and only index write is the pagehide handler's. + assert js.count("leavePartialIndex = conversation.length - 1") == 1, ( + "only the pagehide handler records the partial's index" + ) + # The reset sits at the top of runTurn, with the other turn locals + # (the acc / thinkingAcc / persistedOnLeave group, just before the + # fresh AbortController). + turn = js.find("async function runTurn") + abort_idx = js.find("turnAbort = new AbortController()", turn) + assert -1 < turn < abort_idx, "runTurn must exist" + turn_top = js[turn:abort_idx] + assert "leavePartialIndex = -1;" in turn_top, "reset per turn at the top" + assert turn_top.index("persistedOnLeave = false;") < turn_top.index( + "leavePartialIndex = -1;" + ), "reset alongside the other turn locals (phase-20 group)" + + +def test_pagehide_records_the_partial_index_after_the_push() -> None: + """The pagehide handler keeps its phase-20 guards (idempotency, + in-flight only, nothing brain-side yet) and, AFTER the partial is + pushed through rememberBrainTurn, records the pushed record's index + so the turn's settle can find it.""" + js = _js() + fn = js.find('window.addEventListener("pagehide"') + assert fn != -1, "the pagehide listener must exist" + body = js[fn: js.find("\n});", fn)] + assert "if (persistedOnLeave) return;" in body, "phase-20 idempotency guard" + assert "if (!acc) return;" in body, "nothing brain-side yet → no save" + i_guard = body.index("persistedOnLeave = true;") + i_push = body.index("rememberBrainTurn(acc, { thinking: thinkingAcc || undefined });") + i_index = body.index("leavePartialIndex = conversation.length - 1") + assert i_guard < i_push < i_index, ( + "flag → push the partial → record its index (the record it just pushed)" + ) + + +def test_remember_brain_turn_replaces_in_place_with_identity_guard() -> None: + """rememberBrainTurn's optional in-place mode: `replaceIndex >= 0` + REPLACES the record at that index instead of appending — and only + when the index STILL points at a brain record (the identity guard: + a New-Chat click or restore between pagehide and settle falls back + to the append). Either way the record is written once, and the + save points (localStorage + the headless auto-save) run once on the + written record.""" + js = _js() + fn = js.find("function rememberBrainTurn") + assert fn != -1, "rememberBrainTurn must exist" + body = js[fn: js.find("\n}\n", fn)] + assert "function rememberBrainTurn(rawText, meta, replaceIndex = -1)" in body, ( + "the optional in-place mode defaults to the plain append" + ) + assert 'const rec = { who: "brain", text: rawText || "…", ...meta }' in body, ( + "one record object, written once" + ) + assert ( + 'if (replaceIndex >= 0 && conversation[replaceIndex]?.who === "brain")' in body + ), "identity guard: the index must still point at a brain record" + assert "conversation[replaceIndex] = rec" in body, "the in-place replace" + assert "conversation.push(rec)" in body, "the append (no partial / guard miss)" + i_replace = body.index("conversation[replaceIndex] = rec") + i_push = body.index("conversation.push(rec)") + assert i_replace < i_push, "replace branch precedes the append fallback" + i_save = body.index("saveConversation()") + i_persist = body.index("persistConversation()") + assert i_push < i_save < i_persist, ( + "both save points run ONCE, after the single write — the auto-save " + "refreshes the row exactly once for the replaced record" + ) + + +def test_every_settle_writes_through_the_correlation() -> None: + """The three brain-record write sites in runTurn's settle paths — + the `done` save point, the zero-frame empty-answer fallback, and the + stop-path partial — all pass `leavePartialIndex`, so the replace is + the only write after a pagehide partial (the invariant). The + pagehide handler itself pushes with the plain two-arg form (it IS + the partial).""" + js = _js() + # done save point. + done = js.find('ev.type === "done"') + done_branch = js[done: js.find('ev.type === "error"', done)] + assert "leavePartialIndex" in done_branch, "the done settle is correlated" + # zero-frame empty-answer fallback. + fallback = js.find("!aborted && !wrap") + fallback_block = js[fallback: js.find(") catch (err) {", fallback)] + assert "leavePartialIndex" in fallback_block, "the fallback settle is correlated" + # stop-path partial (the `stopped` marker persist). + catch = js.find("} catch (err) {") + stop_idx = js.find('stoppedByUser || err?.name === "AbortError"', catch) + stop_branch = js[stop_idx: js.find("} else {", stop_idx)] + assert "leavePartialIndex" in stop_branch, "the stop settle is correlated" + # The pagehide handler pushes the plain two-arg partial (the record + # that the settles replace). + fn = js.find('window.addEventListener("pagehide"') + body = js[fn: js.find("\n});", fn)] + assert "rememberBrainTurn(acc, { thinking: thinkingAcc || undefined });" in body + assert "leavePartialIndex" not in body.replace( + "leavePartialIndex = conversation.length - 1", "" + ), "the pagehide handler only records the index — it never settles" + + +def test_real_navigation_behavior_is_unchanged() -> None: + """The leave-save invariant: a REAL navigation never runs a settle + (the page unloads), so the pagehide partial stays persisted exactly + as phase 20 left it — the handler's guards and the rememberBrainTurn + ride-through (localStorage + auto-save) are untouched.""" + js = _js() + fn = js.find('window.addEventListener("pagehide"') + body = js[fn: js.find("\n});", fn)] + for guard in ( + "if (persistedOnLeave) return;", + "if (uiState !== UI_STATE.thinking && uiState !== UI_STATE.streaming)", + "if (!acc) return;", + ): + assert guard in body, f"phase-20 guard intact: {guard}" + # The phase-48 teardown contract (real close / navigation / Stop still + # aborts the fetch) is untouched. + assert "turnAbort?.abort()" in js, "the abort owner still aborts the fetch" + assert re.search(r"export\s+const\s+TURN_TIMEOUT_MS\s*=\s*120_?000\s*;", js), ( + "the guard constant is still 120s (owner-locked phase-17/48 value)" + ) + + +# ---------- C2: hidden time does not count toward the pre-token guard ---------- + + +def test_guard_arms_with_a_rearmable_callback() -> None: + """armTurnTimeout remembers the guard's callback (turnTimeoutCb) so + the visibility listener can re-arm it; clearTurnTimeout clears BOTH + the timer and the callback — armed ⇔ callback set.""" + js = _js() + fn = js.find("function armTurnTimeout") + assert fn != -1, "armTurnTimeout must exist" + body = js[fn: js.find("\n}\n", fn)] + assert "turnTimeoutCb = onTimeout" in body, "the callback is remembered" + assert body.index("turnTimeoutCb = onTimeout") < body.index( + "turnTimeout = setTimeout(onTimeout, TURN_TIMEOUT_MS)" + ), "the callback is stored with the arm" + cfn = js.find("function clearTurnTimeout") + cbody = js[cfn: js.find("\n}\n", cfn)] + assert "clearTimeout(turnTimeout)" in cbody + assert "turnTimeout = 0" in cbody + assert "turnTimeoutCb = null" in cbody, "clearing the timer drops the callback" + + +def test_visibility_rearm_counts_only_visible_pre_token_time() -> None: + """On visibilitychange, when the tab returns to VISIBLE with the + guard still armed (the pre-token window — the timer id is non-zero + and the callback set), it re-arms with a FRESH TURN_TIMEOUT_MS via + armTurnTimeout (the same arm path — one timer, one owner). Hidden + transitions never re-arm. Exactly one such listener exists.""" + js = _js() + assert js.count('document.addEventListener("visibilitychange"') == 1, ( + "one visibility listener (the guard re-arm)" + ) + fn = js.find('document.addEventListener("visibilitychange"') + body = js[fn: js.find("});", fn)] + assert 'document.visibilityState === "visible"' in body, ( + "only a return to visible re-arms — hidden transitions do not extend it" + ) + assert "turnTimeout && turnTimeoutCb" in body, ( + "only an ARMED guard (pre-token window) is re-armed — the timer clears " + "on the first thinking/delta/retry frame and every terminal transition" + ) + assert "armTurnTimeout(turnTimeoutCb)" in body, ( + "the re-arm goes through the same arm path (a fresh TURN_TIMEOUT_MS)" + ) + assert "TURN_TIMEOUT_MS" in body or "armTurnTimeout" in body, ( + "the fresh deadline is the owner-locked TURN_TIMEOUT_MS" + ) + + +def test_header_documents_the_phase_73_contract() -> None: + """House convention: the file-header doc inventories each phase's + contract — phase 73 documents the hidden-tab rule (only close / + navigation / Stop aborts) and both hardenings.""" + js = _js() + header = js[: js.find("import {")] + assert "phase 73" in header.lower(), "the header must carry the phase-73 section" + assert "leavePartialIndex" in header, "the correlation local is documented" + assert "visibilitychange" in header, "the visibility re-arm is documented"