test: cover the discharge summary and the LLM provider dispatch

[marceloarocha]

Two features had no tests at all. This adds one integration suite and one unit suite for them.

GET /summary/<admission_number> — discharge summary (integration)

tests/integration/test_summary.py — 17 tests, services/summary_service.py goes from 30% → 100%.

The interesting logic is the annotation windowing: each summary topic reads its own time window relative to the first or the last clinical note of the admission (the admission reason covers the first four days, previous drugs only the first day, the discharge topics only the last day, and diagnosis/procedures/exams have no window at all). The fixture lays out four notes so every window has a note inside it and a note outside it, and the tests assert both sides.

Also covered: the patient header and the derived IMC (and the None case when weight/height are unknown), the exams filter (out-of-range and within the last 7 days), active-only allergies named by substance when the drug is catalogued, de-duplication across notes, the clinicalSummary composition from reason + procedures + summary, the saved draft, the ?mock=true prompt preview, an admission with no notes, and the 401/400 boundaries.

llm_service.prompt — model provider dispatch (unit)

tests/unit/test_llm_service.py — 16 tests, services/llm_service.py goes from 24% → 100%.

Both boundaries are mocked (the summary-config lookup and the Bedrock client), so no database and no AWS access. Covers the dispatch table, each provider's request body, model id and region, the answer extraction for claude / gpt_oss / llama (including the <reasoning> stripping, single and repeated), and the guards: permission gating, empty messages, missing configuration, unknown provider, and the two configurable-but-unimplemented providers.

Notes

• All test data is synthetic and self-cleaning; the suite was run twice back-to-back with no leftover rows.
• Full suite: 2326 → 2359 passing. ruff check clean.
• Combined services + repository coverage: 80% → 81%.

🤖 Generated with Claude Code

https://claude.ai/code/session_01Kmjcsax3vdE2YXXDKEBk96

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Generated by Claude Code

[amazon-q-developer]

This PR adds comprehensive test coverage for two previously untested features: the discharge summary endpoint and the LLM provider dispatch logic. The integration tests thoroughly validate the annotation windowing logic, exam filtering, and authorization boundaries. The unit tests provide complete coverage of the provider dispatch table and response parsing. Both test suites follow best practices with proper mocking, synthetic data, and self-cleaning fixtures. All 33 new tests are well-structured and the PR achieves the stated coverage improvements (30% → 100% for summary_service and 24% → 100% for llm_service).

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