[cache-strategy] Fix cache miss in Copilot Session Insights

[github-actions]

Cache Strategy Problem: Copilot Session Insights

Severity: 🟠 High

Workflow: Copilot Session Insights
Analysis Date: 2026-08-28
Issue Type: Cache miss

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Problem Description

The prompt requires the workflow to initialize /tmp/gh-aw/cache-memory/session-analysis/history.json and related files when they are missing, then use them to compute a historical baseline. No session-analysis/ cache directory exists after the observed runs, so the workflow is not materializing the history it depends on.

Evidence

• Miss streak: 2 consecutive analyzed days
• Miss rate (14d): 100%
• Last cache hit: never
• Observed runs: 2
• Rebuild excess tokens (14d): 4,614
• Log signals: Prompt defines /tmp/gh-aw/cache-memory/session-analysis/ with history.json and says If cache files don't exist, create them, but no such cache directory exists in persistent cache memory after the runs.

Recommended Fix

1. Create the session-analysis/ directory and seed files as an explicit required step before analysis begins.
2. Verify the files still exist before cache commit/upload so missing history becomes a run failure, not a silent miss.
3. Log whether the historical baseline came from cache or from first-run initialization to make future audits trivial.

Expected Impact

If fixed, the workflow should accumulate real cross-run history instead of recomputing its baseline with no durable memory.

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Detected by the Daily Cache Strategy Analyzer

Generated by 📊 Daily Cache Strategy Analyzer · codex · gpt54 · 164.1 AIC · ⌖ 7.9 AIC · ⊞ 13.2K · ◷

• expires on Sep 4, 2026, 1:56 PM UTC-08:00

[github-actions]

This issue was automatically closed because it expired on 2026-09-04T21:56:13.438Z.

Closed by Workflow