Task 262: Tech Overview Stats Refresh

Status: DONE

Priority: LOW

Objective

Update stale statistics in tech-overview.md and ai-costs.md reports. After Task 261 added 9 E2E tests (propagation demo), the counts are outdated:

• E2E: 205 → 214
• Total tests: 2,611 → 2,620
• Also check commit count, task count, and other stats for freshness

Scope

1. Update tech-overview.md test counts
2. Update ai-costs.md stats if stale
3. Verify article content validation tests still pass
4. Commit all changes

Acceptance Criteria

• [ ] Test counts in tech-overview.md are accurate
• [ ] Stats in ai-costs.md are current
• [ ] All existing tests pass