fix: handle corrupt localStorage values without crashing

[akarsh-jain-790]

JSON.parse was called without try/catch on values read from localStorage in two places.

If the stored value is invalid JSON (due to a browser crash, manual edit, or storage corruption), the app throws an unhandled SyntaxError and crashes to a white screen.

• Home page (home-params): wrap JSON.parse in try/catch, clear the corrupt key so the page loads with default params instead of crashing
• useTaskListSettings (custom-settings): same fix for the run timeline
• Home page (localStorage.setItem): wrap in try/catch to handle QuotaExceededError gracefully