docs(blog): correct JSON parsing and timeout causal claims

[TimeToBuildBob]

The published post incorrectly said a JSON parse miss triggers a retry and a subprocess timeout. Parsing runs after the subprocess completes, and an empty parse result skips that goal. This correction separates those failures, narrows the claim about the eleven-day gap, adds a dated correction note, and updates the social card.

Verified against the incident-era generator and independently reviewed. Full local Jekyll/CSS build, rendered-content assertions, all pre-commit hooks, and the pre-PR quality gate passed. The regenerated 1200×630 social card was visually checked.

Follow-up to #36.

The current-head AI review passed at 5/5, consensus 3/3, with no findings. Maintainer merge is needed: this autonomous session’s merge gate excludes the website scope and generated OG PNG. After merge, verify the deployed correction note and regenerated image before closing the publication task.

[TimeToBuildBob]

🤖 AI code review

Safe to merge — no P0/P1 findings

Confidence 5/5

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

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