Harden audio transcription fetch path with retries and timeout

docs/plans/state.json

@@ -6114,6 +6114,21 @@
         "README.md"
       ],
       "test_status": "docs-only update; no runtime code changes"
+    },
+    "audio-transcription-fetch-retry-hardening": {
+      "status": "completed",
+      "date": "2026-02-23",
+      "updated": "2026-02-23",
+      "summary": "Added retry+timeout hardening for transient `fetch failed` errors in both pre-transcription (`models/media`) and `audio.transcribe`, with focused regression tests and runbook updates for timestamp correlation and endpoint diagnostics.",
+      "files_modified": [
+        "src/models/media.ts",
+        "src/models/media.test.ts",
+        "src/tools/builtin/audio-transcribe.ts",
+        "src/tools/builtin/audio-transcribe.test.ts",
+        "docs/runbooks/VOICE_TRANSCRIPTION_DEBUG.md",
+        "docs/plans/state.json"
+      ],
+      "test_status": "pnpm test:run src/tools/builtin/audio-transcribe.test.ts src/models/media.test.ts"
     }
   },
   "overall_progress": {
@@ -6135,7 +6150,7 @@
     "feature_gap_scorecard": "128/128 match (100%), 0 partial (0%), 0 missing (0%)",
     "operator_dx_milestone": "Phase 3 (Live Ops Dashboard): 2/2 plans complete — milestone done",
     "gmail_auth_cli": "flynn gmail-auth command implemented with OAuth2 flow, doctor check, config routed to Telegram",
-    "native_audio_support": "completed — smart routing for native audio (Gemini/OpenAI/GitHub) vs Whisper transcription fallback, plus 2026-02-23 arg hydration hardening and tool.args_rewritten audit metric",
+    "native_audio_support": "completed — smart routing for native audio (Gemini/OpenAI/GitHub) vs Whisper transcription fallback, plus 2026-02-23 arg hydration hardening, tool.args_rewritten audit metric, and transient fetch retry/timeout hardening",
     "remaining_phases_completion": "Phase 1: 3/3 (100%) — context levels, command registry, memory structure. Phase 2: 3/3 (100%) — component registry, confidence routing, history index. Phase 3: 2/2 (100%) — adaptive memory/compaction, truthfulness/autonomy hardening",
     "next_up": "Track OpenClaw evolution regularly for inspiration and feature ideas"
   },

docs/runbooks/VOICE_TRANSCRIPTION_DEBUG.md

@@ -39,9 +39,28 @@ curl -sS -i -X POST http://localhost:18801/v1/audio/transcriptions \
 - `Transcription endpoint error: FFmpeg conversion failed.`
   - Endpoint could not decode payload as audio. Often caused by model-provided fake or mismatched `data`/`mime_type`.
 
+- `fetch failed`
+  - Flynn could not connect to the transcription endpoint for that attempt (transport/connectivity timeout/reset).
+  - Confirm endpoint is reachable from Flynn host and check `whisper-server` logs around the same timestamp.
+  - If this is intermittent, Flynn now retries transient failures before returning an error.
+
 - `[No speech detected]`
   - Request succeeded and endpoint returned empty transcript text.
 
+## Correlate Events By Timestamp
+
+To inspect one Telegram session with wall-clock timestamps:
+
+```bash
+tail -n 2000 ~/.local/share/flynn/audit.log | jq -c '
+  select(
+    .event.session_id=="telegram:8367012007" and
+    (.event_type=="user.action" or .event_type=="backend.route" or .event_type=="tool.start" or .event_type=="tool.success" or .event_type=="tool.error")
+  )
+  | . + {ts_iso: ((.timestamp/1000)|strftime("%Y-%m-%d %H:%M:%S %Z"))}
+'
+```
+
 ## Rewrite Metric
 
 Flynn emits `tool.args_rewritten` whenever it replaces model-provided `audio.transcribe` args with trusted session audio bytes.