Replace wildcard imports in tasks/__init__.py with explicit re-exports

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Tqxrk8uj4M3w3d3eXm3xK8

tasks/__init__.py

@@ -1,8 +1,8 @@
-from tasks.task import *
-from tasks.tempsensor import *
-from tasks.heater import *
-from tasks.stirrer import *
-from tasks.pot import *
-from tasks.tempctrl import *
-from tasks.sud import *
-from tasks.sud_log import *
+from tasks.task import ATask, TaskManager
+from tasks.tempsensor import TempSensorTask
+from tasks.heater import HeaterTask
+from tasks.stirrer import StirrerTask
+from tasks.pot import PotTask
+from tasks.tempctrl import TcTask
+from tasks.sud import SudTask
+from tasks.sud_log import SudLogTask