feat(tutorial): enhance help button visibility and add dialog tests

- Introduced a mechanism to hide the help button when modal dialogs are open by adding `helpButtonHidden` state in the tutorial controller.
- Updated various components to set the help button visibility based on dialog states.
- Added tests to verify help button visibility during reward and task confirmation dialogs.
- Created new E2E tests for dialog help button functionality across different assignment views.
- Refactored existing dialog components to utilize the new help button visibility logic.
- Added unit tests for `RewardConfirmDialog` and `TaskConfirmDialog` to ensure correct titles are rendered based on task type.
- Enhanced `HelpButton` component tests to validate visibility based on tutorial state.

opencode.json

@@ -15,9 +15,9 @@
         "GITEA_HOST",
         "docker.gitea.com/gitea-mcp-server"
       ],
-      "env": {
-        "GITEA_ACCESS_TOKEN": "<secret>",
-        "GITEA_HOST": "https://git.ryankegel.com"
+      "environment": {
+        "GITEA_HOST": "https://git.ryankegel.com",
+        "GITEA_ACCESS_TOKEN": "{env:GITEA_ACCESS_TOKEN}"
       }
     }
   }