feat: add boards and tasks management endpoints

backend/app/api/activity.py

@@ -0,0 +1,26 @@
+from __future__ import annotations
+
+from fastapi import APIRouter, Depends, Query
+from sqlmodel import Session, select
+
+from app.core.auth import get_auth_context
+from app.db.session import get_session
+from app.models.activity_events import ActivityEvent
+from app.schemas.activity_events import ActivityEventRead
+from app.services.admin_access import require_admin
+
+router = APIRouter(prefix="/activity", tags=["activity"])
+
+
+@router.get("", response_model=list[ActivityEventRead])
+def list_activity(
+    limit: int = Query(50, ge=1, le=200),
+    offset: int = Query(0, ge=0),
+    session: Session = Depends(get_session),
+    auth=Depends(get_auth_context),
+) -> list[ActivityEvent]:
+    require_admin(auth)
+    statement = (
+        select(ActivityEvent).order_by(ActivityEvent.created_at.desc()).offset(offset).limit(limit)
+    )
+    return list(session.exec(statement))