docs(blog): publish leftover-category bias

[TimeToBuildBob]

Summary

• publish a source-grounded post about distinguishing launch intent from post-run artifact classification
• explain why the recorded monitoring category became a survivor-biased leftover bucket
• add the generated 1200×630 OG image

Verification

• full Jekyll build passed with the existing shared gem cache
• scoped pre-commit passed
• rendered page and OG metadata verified locally

[TimeToBuildBob]

🤖 AI code review

Adds a new blog post about a bias in monitoring session classification along with an Open Graph image. The post recounts a fleet report where the 'monitoring' category was a catch-all for unrecognized sessions and discusses the dangers of treating missing joins as failures.

Safe to merge — no P0/P1 findings

Confidence 5/5

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

_{Reviewed d17051080907 · openrouter/deepseek/deepseek-v4-flash-0731 · llm engine · 292s · about this reviewer}

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