feat: add personal ics feeds for assigned tasks

app/services/bootstrap.py

@@ -17,8 +17,18 @@ def ensure_schema_and_admins() -> None:
         db.session.execute(text("ALTER TABLE user ADD COLUMN is_admin BOOLEAN NOT NULL DEFAULT 0"))
         db.session.commit()
 
+    if "calendar_feed_token" not in column_names:
+        db.session.execute(text("ALTER TABLE user ADD COLUMN calendar_feed_token VARCHAR(255)"))
+        db.session.commit()
+
     ensure_app_settings()
 
+    users_without_feed = User.query.filter(User.calendar_feed_token.is_(None)).all()
+    if users_without_feed:
+        for user in users_without_feed:
+            user.ensure_calendar_feed_token()
+        db.session.commit()
+
     admin_exists = User.query.filter_by(is_admin=True).first()
     if admin_exists:
         return