fix: correct task sort order per status

DONE: finished_time ASC, PENDING: start_time ASC, TODO: order ASC

database.py

@@ -202,19 +202,25 @@ def get_tasks_sorted(goal_id):
     try:
         cur = conn.execute(
             """SELECT * FROM tasks WHERE goal_id = ? AND status = 'done'
-               ORDER BY finished_time DESC""",
+               ORDER BY finished_time ASC""",
             (goal_id,)
         )
         finished = [row_to_dict(r) for r in cur.fetchall()]
 
         cur = conn.execute(
             """SELECT * FROM tasks WHERE goal_id = ? AND status != 'done'
-               ORDER BY CASE status
-                   WHEN 'doing' THEN 1
-                   WHEN 'pending' THEN 2
-                   WHEN 'todo' THEN 3
-                   ELSE 4
-               END, "order" ASC""",
+               ORDER BY
+                   CASE status
+                       WHEN 'doing' THEN 0
+                       WHEN 'pending' THEN 1
+                       WHEN 'todo' THEN 2
+                   END ASC,
+                   CASE status
+                       WHEN 'pending' THEN start_time
+                   END ASC,
+                   CASE status
+                       WHEN 'todo' THEN "order"
+                   END ASC""",
             (goal_id,)
         )
         unfinished = [row_to_dict(r) for r in cur.fetchall()]