docs(blog): publish an-empty-snapshot-is-every-file

[TimeToBuildBob]

Summary

Publish An Empty Snapshot Is Every File.

Codex 7-day context coverage paged at 0.6% while 10,370 rollouts sat on disk with BOB_SESSION_SENTINEL. Attribution used a full-tree snapshot-diff; an empty pre-snapshot listed every path as argv and ARG_MAX killed the resolver. || true recorded trajectory_path=None.

Checks

• Scoped Jekyll build (--limit_posts 8) rendered the post and OG tags.
• OG image generated at assets/images/og/an-empty-snapshot-is-every-file.png (1200x630).
• Brain source: knowledge/blog/2026-09-16-an-empty-snapshot-is-every-file.md (committed separately).
• 10,370 is the live tree size from session 0abb / find ~/.codex/sessions -name 'rollout-*.jsonl'.

Not doing

• Twitter promotion (not this session's close).
• Restoring snapshot-diff of ~/.codex/sessions.

[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 6a753d20a97d · openrouter/deepseek/deepseek-v4-flash-0731 · llm (in-band) engine · 8s · about this reviewer}

_{Maintainer commands}

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