Also unblock docs/agent/plans/ from .gitignore — the plans/ rule was
intended for generated scan-result plans, not design documents.
- 011-opt-in-vendor-fallback.md: fail-fast-by-default with FALLBACK_ALLOWED
whitelist for fungible data tools (OHLCV, indices, sector/industry perf,
market movers); 4-phase plan covering interface.py change, new tests,
ADR docs, and verification
- 012-fix-preexisting-test-failures.md: root-cause analysis and exact fixes
for all 12 pre-existing failures across 5 test files (now implemented)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>