Adds FusionReportsController exposing:
- list_available, run, drill_down
- get_anomalies (with optional persistence to fusion.report.anomaly)
- get_commentary (LLM cache via fusion.report.commentary, force_regenerate flag)
- compare_periods (delegates to run with comparison flag)
- export_pdf / export_xlsx (Phase 2 placeholders for Tasks 34/35)
All endpoints use V19's type='jsonrpc' and route through
fusion.report.engine - no direct ORM aggregation in the controller.
8 new HttpCase tests cover each endpoint. Total: 78 logical tests.
Made-with: Cursor