feat(scada): add calibrated monitoring and incident recovery

app/infra/db/calculation_worker.py

@@ -7,6 +7,29 @@ from uuid import UUID
 from sqlalchemy import text
 
 
+async def discover_project_ids() -> tuple[str, ...]:
+    """Return every active PostgreSQL-backed project from authoritative metadata."""
+    from sqlalchemy import select
+    from app.infra.db.metadb.database import SessionLocal
+    from app.infra.db.metadb import models
+
+    async with SessionLocal() as session:
+        rows = await session.scalars(
+            select(models.Project.id)
+            .join(
+                models.ProjectDatabase,
+                models.ProjectDatabase.project_id == models.Project.id,
+            )
+            .where(
+                models.Project.status == "active",
+                models.ProjectDatabase.db_role == "biz_data",
+                models.ProjectDatabase.db_type == "postgresql",
+            )
+            .order_by(models.Project.id)
+        )
+        return tuple(str(project_id) for project_id in rows.all())
+
+
 @asynccontextmanager
 async def queue_repository(project_id):
     """Resolve the current project route and open its calculation queue."""