1. Skip ONCE on infra errors (Claude Code CLI missing/timeout/unreachable):
- run_ai_fix returns '[INFRA] ...' reasons; worker marks the PR permanently
skipped at that head SHA in fix-state (no more retry every 5 min)
- skip is recorded per {repo,pr,sha}; cleared when head SHA changes
2. Merge conflict auto-fix via Claude Code:
- mergeable=False or merge HTTP 409 now trigger run_ai_fix (prompt already
merges base + resolves conflicts) once per head SHA
- success → next tick re-checks mergeable and merges; failure → skip once
3. Discord skip notification dedupe:
- notify_skip_once(): posts '⏭️ Skipped: <reason>' exactly once per
PR+head_sha (state.notified flag); no repeated spam every cron tick
- skip reason + which PR is visible in the notification
4. State migration: legacy {repo:{pr:'sha'}} → dict form handled in _pr_entry
Verified: py_compile clean, state-helper unit tests pass (skip/fixed/notify
dedupe/legacy migration). Cron wrapper execs repo copy — no manual sync.
