Changes:
- docs/testing_strategy_v1.md v1.1:
- Clarify test pyramid with build tags (unit/integration/e2e)
- Add Middleware to priority module list
- Add coverage run discrepancy warning (individual vs ./...)
- Update action items to reflect completed work
- Add race detector usage guidelines
- Add test cleanup patterns
- reports/test_coverage_report_2026-04-08.md:
- Clarify coverage run discrepancy (individual vs ./...)
- Add dual columns: individual run vs combined run
- Update status to ✅ all key modules passing
- Add week-over-week trending
- Remove incorrect "emergency" status
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