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Audit side-finding: heading style drift in CHANGELOG.md. Before: ## v3.12.0 (2026-04-25) ← parens style (1 entry) ## v3.11.1 — 2026-04-21 ← em-dash style (canonical, majority) ## v3.11.0 — 2026-04-20 ← em-dash style (canonical, majority) After: all 3 entries use the em-dash form (2 of 3 entries already used it, so it's the canonical pattern by majority). Only the v3.12.0 heading line changed. The body content under each heading is untouched — only the date-format separator changes from parens to em-dash. Verification: - `grep "^## " CHANGELOG.md` after the edit → all entries match `## vX.Y.Z — YYYY-MM-DD`. - `git diff CHANGELOG.md` shows exactly one line changed. Refs: audit side-finding 3 of 4. Co-authored-by: dtzp555 <dtzp555@gmail.com> Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
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Changelog
v3.12.0 — 2026-04-25
Features
- Streaming heartbeat — opt-in SSE comment frame (
: keepalive\n\n) emitted during silent windows on the streaming response. Controlled byCLAUDE_HEARTBEAT_INTERVALenv var (ms;0= disabled, default). Covers both pre-first-byte and mid-stream tool-use pauses. Addresses #47. See design doc. X-Accel-Buffering: noresponse header added to SSE responses so heartbeats survive nginx/Cloudflare default buffering.
Behavior changes
- SSE headers are now sent immediately after the claude CLI spawns successfully, not on first stdout byte. The rare "spawn succeeded but subprocess died before any byte" path now closes the SSE stream cleanly rather than returning a JSON error.
Config additions
| Variable | Default | Description |
|---|---|---|
CLAUDE_HEARTBEAT_INTERVAL |
0 (disabled) |
Interval in ms for SSE keepalive comment frames on streaming path. Resets on every real frame. |
v3.11.1 — 2026-04-21
Fixes
- Concurrency slot leak on subprocess timeout (#37). The request-timeout handler called
proc.kill("SIGTERM")without decrementingstats.activeRequests. A subprocess stuck in a syscall that ignored SIGTERM would hold its slot until (or beyond) the 5s SIGKILL escalation actually reaped it. Slot release is now wired toproc.once("exit", cleanup)so every termination path — normal close, error, SIGTERM, SIGKILL — releases the slot exactly once.
v3.11.0 — 2026-04-20
Features
ocp updatenow automatically syncs OpenClaw's registry with the latest models (scripts/sync-openclaw.mjs)- Server logs warn if OpenClaw registry drifts from models.json
Refactor
- models.json is now the single source of truth for model list
- server.mjs and setup.mjs derive MODEL_MAP/MODELS from models.json
- Adding a new model is now a one-file edit
Fixes
- OpenClaw's model dropdown now shows all 4 current models (opus-4-7, opus-4-6, sonnet-4-6, haiku-4.5) on existing installs after
ocp update. Previously setup.mjs only wrote the registry at install time.