feat(v1.5.0): Relations, Rollups, Formulas — FormulaEngine, RollupEngine, API

- FormulaEngine: 19 functions (prop, if, concat, round, now, today, dateAdd, replace, ...)
- RollupEngine: 12 aggregations (count, sum, avg, min, max, range, unique, percent_checked)
- API relation: POST /db/{id}/properties/relation + /link (bidirectional)
- API rollup: POST /db/rollup/compute
- API formula: POST /db/formula/evaluate
- FKs fix: related_collection_id/relation_property_id/target_property_id → ON DELETE SET NULL
- 43/43 tests passent (+5 tests v1.5)
- Version 1.4.0 → 1.5.0
- Docs: ROADMAP, CHANGELOG à jour

app/main.py

@@ -31,13 +31,13 @@ async def lifespan(_app: FastAPI):
             "INSERT OR IGNORE INTO users (login, full_name, email, is_admin) VALUES ('admin', 'Admin', '', 1)"
         )
         conn.commit()
-    logger.info("FlowDeck v1.4.0 started on port %d", settings.app_port)
+    logger.info("FlowDeck v1.5.0 started on port %d", settings.app_port)
     yield
 
 
 app = FastAPI(
     title="FlowDeck",
-    version="1.4.0",
+    version="1.5.0",
     docs_url="/docs" if settings.log_level == "DEBUG" else None,
     redoc_url=None,
     lifespan=lifespan,