feat: add persistent badges and admin badge page

app/services/tasks.py

@@ -6,6 +6,7 @@ from sqlalchemy import select
 
 from ..extensions import db
 from ..models import TaskInstance, TaskTemplate
+from .badges import evaluate_task_badges
 from .dates import add_months, today_local
 
 
@@ -122,5 +123,6 @@ def complete_task(task: TaskInstance, completed_by_user_id: int) -> TaskInstance
         task.status = "completed"
         ensure_next_recurring_task(task)
         db.session.commit()
+        if task.completed_by_user:
+            evaluate_task_badges(task.completed_by_user)
     return task
-