Add end-to-end tests for task modification and assignment features

- Implemented tests for editing penalty points and reward costs in `penalty-edit-points.spec.ts` and `reward-edit-cost.spec.ts`.
- Created detailed plans for task activation and assignment scenarios in `task-activated.plan.md` and `task-assignment.plan.md`.
- Added comprehensive test cases for modifying tasks, including editing points for chores, kindness acts, penalties, and rewards in `task-modified.plan.md`.
- Ensured all tests are isolated and run in serial mode to maintain state integrity.

.vscode/launch.json

@@ -33,7 +33,12 @@
         "dev"
       ],
       "cwd": "${workspaceFolder}/frontend/vue-app",
-      "console": "integratedTerminal"
+      "console": "integratedTerminal",
+      "serverReadyAction": {
+        "pattern": "Local:.*https://localhost:([0-9]+)",
+        "uriFormat": "https://localhost:%s",
+        "action": "debugWithChrome"
+      }
     },
     {
       "name": "Chrome: Launch (Vue App)",
@@ -80,10 +85,10 @@
   "compounds": [
     {
       "name": "Full Stack (Backend + Frontend)",
+      "stopAll": true,
       "configurations": [
         "Python: Flask",
-        "Vue: Dev Server",
-        "Chrome: Launch (Vue App)"
+        "Vue: Dev Server"
       ]
     }
   ]