Add greeting, weather, and clock widgets to home page

Introduces a dynamic greeting, live clock, and weather widget to the home page. Adds a 'Reset' button for bookmarks, refines the bookmarks card UI, and updates CSS for new widgets and improved layout. Settings page now includes a weather unit preference (auto, Celsius, Fahrenheit) that syncs with the home page weather display.

package-lock.json

@@ -1472,9 +1472,9 @@
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       "license": "MIT",