Root causes of the screenshot 404 incident:
1. RACE: client uploads image AND sends message concurrently; bot received
the message before the upload finished writing, so its GET hit a 404
error page (<100B treated as failure). FIX: _download_image now retries
3x with 2s backoff.
2. Zhiwei mentioned tesseract/小果 because the failure text never told her
the pipeline IS SenseNova. FIX: failure messages now name SenseNova
explicitly and ask for resend.
3. log_xmpp never worked for the bot: sys.path used relative '../..' from
a symlinked __file__ which resolved to '/' instead of MoFin root. This
is why the '最近对话' panel never had bot chat data (only cron script
entries). FIX: absolute path per red line #7. Verified: test message
now lands in xmpp_messages.jsonl.
4. My PowerShell -replace corrupted the file encoding (UnicodeDecodeError
crash loop on restart). Restored from git HEAD and re-applied edits with
the edit tool. Lesson: never use PowerShell string replace on UTF-8
source files with Chinese content.
5. functional_health: new sense_ocr module (OCR config presence +
SenseNova API TCP reachability), no token cost.
User requirement: health tab should show recent XMPP conversations.
- bot hooks log_xmpp on inbound (on_msg) and outbound (_deliver_loop)
so real chats land in xmpp_messages.jsonl (was: only cron/scanner)
- index.html health tab: new '最近对话' panel (last 10 msgs, dir arrow,
preview, status, time); refreshHealth updates it incrementally
- last_error now shows age and resolved state: once a successful
outbound happens after an error, it's shown gray as '已恢复'
instead of alarming red forever; unresolved errors still red
- health() status no longer degraded by errors that were later
resolved by successful outbound
Root cause of 'no response': auto_heal restart_zhiwei_bot fired whenever
inbound>0 + outbound=0 + errors>0 — which is exactly the normal state while
the bot waits for a slow LLM call (agent tool-use turns take 1-10 min).
Restart killed the in-flight LLM call -> user never got reply -> next cron
cycle saw same state -> restart again. Death loop (fired 22:30,22:35,22:40,
22:45,22:50,23:35).
Fixes:
- CALL_HERMES_TIMEOUT 180s -> 600s (agent tool calls need minutes)
- health(): parse last_inbound/outbound timestamps from journal
- auto_heal: restart bot ONLY if last inbound >600s old with no outbound
since (truly stuck), plus 600s bot-restart cooldown
- slow-but-normal state now logs bot_busy_not_stuck instead of killing
D fix: screenshots were silently dropped (empty body + OOB url).
- register xep_0066, capture msg['oob']['url'] when body empty
- also handle body-as-URL messages (some clients put URL in body)
- download from upload.yoin.fun, OCR via SenseNova (sensenova-6.7-flash-lite)
- inject OCR text as context into LLM call
- config at /home/hmo/.config/mofin/ocr_config.json (outside repo)
- replaces dead node122 GLM-OCR path (host unreachable)
A+B fix: ACK_DELAY 15s -> 120s. 15s fired on every normal LLM
cold-start (20-100s), now only signals genuine hangs.
hmo
知微