Analyze Daily Rig File Summarizer run (2026-07-25)

[Copilot]

Analysis of the Daily Rig File Summarizer workflow run #30161988108, posted as a comment on issue #160 per @pelikhan's request.

Findings

• Run succeeded end-to-end — all 5 jobs (activation → agent → detection → safe_outputs → conclusion) completed with success
• Caching worked correctly — turn 1 wrote 14,745 tokens to KV cache; turns 2–24 each consumed ~1 new input token with 14k–33k cache reads, confirming the Copilot SDK caching path functions as expected
• Cost: 40.9 AIC for the rig agent (24 turns, 2m 22s) + 5.05 AIC for threat detection ≈ 46 AIC total
• Coverage gap identified: find ... | head -20 should surface up to 20 .ts files, but the LLM only delegated file-summarizer for 3 (rig.ts, rig.test.ts, run-sample.test.ts) — the instruction "call summarizeFile for each file path" was not followed strictly; a more directive prompt or explicit iteration pattern may be needed
• Security clean — threat detection: no prompt injection, secret leak, or malicious patch

• Fixes [rig-summarizer] Daily file summary — 2026-07-25 #160