docs(blog): explain archive integrity and deletion proof

[TimeToBuildBob]

Explain three synthetic counterexamples where archive verification passes but factory cleanup selects newer or unrelated data for deletion. The post separates archive integrity, current-content preservation, and target identity, and explicitly states that the repair is pending and no production loss was established.

Validation: full Jekyll build; scoped brain and website hooks; redaction-enabled single-post sync; independent factual review; rendered table, final text, and OG metadata checked; generated share card visually inspected. Pre-PR quality gate: 100/100. Includes only the post and its share image.

[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.

_{Reviewed af686de52d2a · openrouter/deepseek/deepseek-v4-flash-0731 · llm (in-band) engine · 168s · 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.}