feat(buglog): one Markdown record per bug, checked against a record standard

The buglog was one 27K-line JSON file whose fields covered only symptom,
root cause and fix, as free text: 2% of entries named the code version a
bug was found on, 12% the build profile, 36% a way to reproduce, and 58% of
the file was OpenWolf hook auto-detections ("Missing guard clause",
"Function not marked async" on .md files).

- .claude/skills/buglog/bug-record.md: the record standard. Eight
  sections (Summary as the title, Description, Environment, Reproduction;
  Root cause, Fix, Verification, References once fixed), each with the
  content it must contain -- e.g. Environment needs the OS, the libc the
  failing binary loads (from its ELF interpreter: glibc 2.42 in the nix
  shell vs 2.40 on the host), toolchain, build profile and commit.
- .wolf/bugs/<id>.md: 500 records migrated from buglog.json; every field
  verified to round-trip. They carry legacy: true and an explicit "not
  recorded" where the old log had no such field; component derived from
  file paths, severity from keywords (else unknown), fix_commits from
  hashes in status_note/fix that git resolves (91 of 463 fixed).
- .wolf/buglog-archive.json: the 710 hook auto-detections, verbatim.
- .wolf/buglog.json is now an index generated from the records, keeping
  the fields OpenWolf's hooks and `openwolf bug search` read.
- scripts/buglog.py rewritten: new (template + Environment collected from
  the machine and --binary), check, status (refuses a status the record
  doesn't support; fixed needs Root cause, Fix, Verification and
  --commit hashes git resolves), note, recur, set, show, list, triage,
  env, index. 29 unittest cases in scripts/tests/test_buglog.py.
- scripts/git-hooks/pre-commit runs `check --staged`: incomplete staged
  records, a legacy record hand-changed to fixed without the fix-time
  sections, a new record claiming legacy: true, or a stale index refuse
  the commit.
- scripts/gitea-sync.py reads the records: issue body = the record's
  sections plus linked fix commits (origin remote, GITEA_COMMIT_REPO to
  override), and a body hash so an issue's text is refreshed when the
  record changes.
- bug-1866 rewritten to the full standard as the worked example.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.wolf/bugs/bug-1870.md

@@ -0,0 +1,41 @@
+---
+id: "bug-1870"
+status: "fixed"
+status_updated: "2026-09-26"
+status_note: "63fd3d2a: checkpoints no longer write the LSN-consuming WAL_CHECKPOINT marker; force-snapshot, config-upgrade-wal-trim, sequential soaks PASS."
+component: "controller"
+severity: "unknown"
+timestamp: "2026-09-26T09:55:09Z"
+last_seen: "2026-09-26T09:55:09Z"
+occurrences: 1
+files: ["src/controller/persist.c (checkpoint marker append)", "src/controller/repl.c / config_repl.c (broadcast / catch-up)"]
+tags: ["ha", "replication", "checkpoint", "wal", "force-snapshot", "soak", "livelock"]
+related: []
+fix_commits: ["63fd3d2a"]
+legacy: true
+gitea_issue: 296
+gitea_synced_status: "fixed"
+---
+
+# bug-1870: xce-test-ha --force-snapshot FAIL: 'could not submit 110 jobs to trigger a checkpoint' -- writes…
+
+## Description
+xce-test-ha --force-snapshot FAIL: 'could not submit 110 jobs to trigger a checkpoint' -- writes stall right after the first max-wal-records checkpoint. The primary's WAL holds a CHECKPOINT entry (plen 0) at the checkpoint LSN that no standby ever receives (primary ctrl-1: 109 JOB_SUBMIT, 110 CHECKPOINT, 111 JOB_SUBMIT; standbys stop at 109). Every later AppendEntries carries prevIdx=<checkpoint LSN>, standbys reply ae_reject_logmismatch, the primary marks catch-up and re-sends the last common entry forever: 'commit: async continuation deadline expired without commit', 'HA quorum lost: connected=0'.
+
+## Environment
+_Not recorded (migrated from buglog.json)._
+
+## Reproduction
+_Not recorded (migrated from buglog.json)._
+
+## Root cause
+Not yet root-caused. The checkpoint marker is appended to the local WAL (and consumes an LSN in the replicated log) without being broadcast to / streamed to standbys, so the log has a hole standbys can never fill. Reproduced on a565779d (baseline, 2026-09-26) and on the bug-1867 working tree -- independent of both. Repro: nix develop ./src --command bash .claude/skills/xce-test-ha/run-ha-soak.sh --force-snapshot <dir> (max-wal-records=100, wal-segment-bytes=4096).
+
+## Fix
+UPDATE (2026-09-27): follow-up cb1415d7: load_snapshot seeded current_lsn = checkpoint_lsn (off by one, hidden by the removed marker) -- broke --config-upgrade soak; fixed
+
+## Verification
+_Not recorded (migrated from buglog.json)._
+
+## References
+- Gitea: #296