feat(story-6.3): implement test architect coverage gap analysis with self-contained Memtrace context blocks
- Install bmad-tea (Murat/Test Architect) and bmad-testarch-trace skills
- Add Memtrace persistent facts to bmad-tea and bmad-testarch-trace customize.toml
- Add structural symbol discovery (step-02), symbol-to-test mapping (step-03),
and structural gap analysis (step-04) to trace workflow
- Add Structural Coverage Analysis section to trace template
- Add self-contained Memtrace context blocks to 13 step files across 6 skills
(trace, code-review, gds-code-review, quick-dev, architecture, readiness)
with complete 22-tool categorized catalog
- Eliminates resolve_customization.py script dependency for loading Memtrace context
FR14: Test Architect cross-references test files against graph symbols
dcad68e975