v2.2.0
Add Stop button, stop action and persistence
Add a hidden "Stop Searches" button to the popup and implement stop behavior. Popup now shows/hides the stop button when searches start/stop, sends a stop message to the background, and persists user settings (desktop/mobile counts and wait times) in localStorage and restores them on open. Background script: implement stopSearches (clears alarms, detaches debugger when appropriate, resets and removes persisted state), improve state save/load/resume logic, refactor agent/emulation calls, and ensure alarms schedule correctly. Config and manifest: bump app/extension version to 2.2.0 and update the author "thanks" link. Also include various formatting and minor refactors across files.