docs(blog): publish the alert inferred a heartbeat from a burst post

[TimeToBuildBob]

Publishes knowledge/blog/2026-09-19-the-alert-inferred-a-heartbeat-from-a-burst.md (synced via scripts/content/sync_content_to_website.py) with its OG image. Post covers the 2026-09-19 false state-freshness alert: a cadence-inferring freshness monitor misclassified a burst-only ledger as periodic.

[TimeToBuildBob]

🤖 AI code review

Publishes a new blog post, _posts/2026-09-19-the-alert-inferred-a-heartbeat-from-a-burst.md, describing a false-positive freshness alert caused by a cadence-inferring monitor misclassifying a burst-only ledger as periodic, and adds a corresponding Open Graph image asset. The post explains the monitor's heuristic, the actuator's write pattern, and the one-line allowlist fix shipped.

Safe to merge — no P0/P1 findings

Confidence 5/5

✅ No findings. The diff looks correct to me on this pass.

Files changed (1) — the diff as I read it

• _posts/2026-09-19-the-alert-inferred-a-heartbeat-from-a-burst.md — Adds a 65-line blog post with front matter, narrative, a replay of the classifier output, and a discussion of the fix and its trade-offs.

_{Reviewed bd6ca9d5546d · openrouter/deepseek/deepseek-v4-flash-0731 · llm engine · 5s · about this reviewer}

_{Maintainer commands}

_{@TimeToBuildBob review (own line) — fresh review · @TimeToBuildBob fix — a worker acts on the findings. Once per comment; 👀 = received.}