feat(evaluation): implement P-04 Room result repository

[daniele21]

Superseded for integration by #260. The durable P-04 Room repository is being carried by the clean replay on the newer dev baseline. This PR remains only as historical implementation/validation context and must not receive further commits or be merged.

Original scope:
Implements EVAL-P-04 against the integrated P-03 privacy-safe schema and P-02 repository semantics.

• adds a dedicated Evaluation Room database/DAO; telemetry database ownership remains untouched;
• adds Room compiler/schema export wiring without destructive fallback;
• implements EvaluationResultRepository create/update/case append/get/query/delete/retention through Room;
• preserves immutable run config, lifecycle transition validation, sample-set case bounds, deterministic history order, active-run delete protection and terminal-only retention from the P-02 reference;
• uses dynamic bounded SQL for filtered history rather than filtering after LIMIT;
• maps the normalized entity graph back to domain contracts while recomputing and verifying sample-set, semantic-execution and run fingerprints so inconsistent stored identity fails closed;
• keeps prompt, expected-answer and generated-answer content out of the database;
• adds quality_present and category ordinal fields before Evaluation database v1 exists so optional-quality semantics and category ordering survive exact round trips;
• adds mapper round-trip coverage including present-but-empty quality and privacy-safe case outcome fields.