Regression Test Generator

<objective> Automatically generate regression tests that capture bugs to prevent recurrence. Creates complete, framework-appropriate tests that: 1. Reproduce the bug scenario (fails before fix) 2. Verify correct behavior (passes after fix) 3. Link back to error-log.md for traceability </objective>

<quick_start> Generate regression test for a bug:

1. Collect bug details: error ID, symptoms, root cause, affected component
2. Detect test framework from project (Jest, Vitest, pytest, Playwright)
3. Generate test file following project patterns
4. Present to user for review: [A] Save [B] Edit [C] Skip
5. Save test to tests/regression/ and update error-log.md

Key principle: Tests should FAIL before the fix is applied (proves bug exists). </quick_start>

<prerequisites> Before generating regression test: - Bug has been identified with symptoms and reproduction steps - Root cause determined (from 5 Whys or debugging) - Component/file affected is known - Error ID assigned (ERR-XXXX) or will be assigned

Check error-log.md to avoid duplicate tests for same error. </prerequisites>

<workflow> <step number="1"> **Collect bug details**

Extract from debug context:

• Error ID: ERR-XXXX from error-log.md (or generate new)