fix: resolve V1 test compatibility (Issue #2)

[DeepRatAI]

Fix V1 test compatibility

Closes #2

Problem

Three test files used V1-style imports that have been broken since the V2 architecture migration:

File	V1 Import	Status
test_api.py	from api.auth import ...	ModuleNotFoundError — api/ directory removed
test_i18n.py	from i18n import ...	ModuleNotFoundError — no i18n module exists
test_medex_logger.py	from medex_logger import ...	39/39 pass — root medex_logger.py works

Engineering Decisions

test_api.py → Deleted

• The V1 api/ module (auth, main, models, services) no longer exists
• V2 API uses factory pattern, different middleware, different models
• test_api_v2.py (52 tests, 867 lines) fully covers the V2 API
• Cannot be fixed with import rewrites — the entire API surface changed

test_i18n.py → Deleted

• No i18n module exists in V2 (neither at root nor in src/medex/)
• Issue Add multi-language support (English/Spanish) #4 will create the multi-language module with proper tests
• Keeping tests for non-existent code adds no value

test_medex_logger.py → Promoted to required tests

• Already passes 39/39 tests locally and in CI
• Root medex_logger.py is mature, working code with only stdlib deps
• Moved from "Legacy Tests" (informational) to required test matrix

CI Changes

• Required tests: Added test_medex_logger.py (39 tests, 0 deps)
• Legacy Tests job: Removed (no legacy test files remain)
• Extended Tests: Cleaned up ignore list (removed deleted files)
• Total required tests: 136 (97 existing + 39 logger tests)
• CI jobs reduced from 8 → 7 (legacy job removed)

Local Verification

• pytest tests/test_api_v2.py tests/test_detection.py tests/test_differential_diagnosis.py tests/test_medex_logger.py → 136 passed ✅
• ruff check src/ tests/ → All checks passed ✅
• black --check src/ tests/ → All files unchanged ✅

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Signed: Gonzalo