feat: Update BLOCKERS.md to include new staff application session handling and assumptions for shift assignments

BLOCKERS.md

@@ -46,4 +46,12 @@
 - Staff APP:
     - On app launch, check whether there is an active session. If a valid session exists, skip the auth flow and navigate directly to Home, loading Staff account.
     - Add an expiration time (TTL) to the session (store expiresAt / expiryTimestamp) and invalidate/clear the session when it has expired.
-    - For staffs Skills = Roles? thinking in the future for the smart assigned that need to know the roles of staff to assign.
+    - For staffs Skills = Roles? thinking in the future for the smart assigned that need to know the roles of staff to assign.
+
+## App
+- Staff Application
+
+### Github issue
+- https://github.com/Oloodi/krow-workforce/issues/248
+### Deveations:
+- Assumed that a worker can only have one shift per day.