Summary

During the Daily CLI Performance run (§30374053812), make bench-performance failed on BenchmarkCompileMCPWorkflow (in pkg/workflow/compiler_performance_benchmark_test.go). All other 8 benchmarks compiled and ran successfully within performance baselines, so this is not a performance regression — it is a broken test fixture.

Error

--- FAIL: BenchmarkCompileMCPWorkflow
    compiler_performance_benchmark_test.go:164: warm-up compile failed: /tmp/bench-mcp.../mcp.md:1:1: error: Validation failed for field 'tools.cache-memory.key'
    Value: pr-${{ github.run_id }}
    Reason: cache key must not reference github.run_id — every run would write to a unique cache slot, preventing cross-run cache restoration

The test fixture at line 142 of pkg/workflow/compiler_performance_benchmark_test.go sets:

key: pr-${{ github.run_id }}

This is now rejected by the compiler's cache-key validation (introduced separately), which requires cache keys to omit github.run_id since it's appended automatically.

Suggested Fix

Update the fixture's cache-memory key to something like pr-${{ env.GH_AW_WORKFLOW_ID_SANITIZED }} so the benchmark warm-up compile succeeds.

Secondary Issue: corrupted benchmark history

The repo-memory file benchmark_history.jsonl (used for tracking daily performance trends) was found corrupted — multiple prior runs' JSON objects had been concatenated onto a single malformed line, preventing all historical trend comparisons. All entries prior to today (2026-07-28) were unrecoverable and have been discarded; the file now contains only today's baseline entry. Trend/regression detection will resume once a few more days of clean data accumulate. This may indicate a bug in how a previous run appended to the file (e.g., missing trailing newline before append).

Current Benchmark Results (all within target baselines)

All well within the <100ms simple / <500ms complex / <1s MCP targets (though MCP itself could not be measured due to the failure above).

Automatically generated by Daily CLI Performance workflow

Generated by ⚡ Daily CLI Performance Agent · sonnet50 · 40.9 AIC · ⌖ 8.75 AIC · ⊞ 15.4K · ◷

• expires on Jul 30, 2026, 7:45 AM UTC-08:00