pick from element will be alwasy visible

New features

• Path depth control — Settings tab now has a "Path depth" selector. Choose how many segments to show/copy: element only (1), element + N ancestors (2–5), or all (default). Long paths show … prefix when truncated.
• Element picker — Visual full-page overlay to pick any element by clicking. Spotlight cutout follows cursor, path previews live, click copies immediately and closes.
• Dialog is draggable — grab the header and reposition anywhere on screen
• Dialog width adapts to path length — short paths produce a compact dialog near the element; long paths expand up to 420px
• Inspector mode — Hover tooltip follows cursor and shows the path in real time. Click any element to copy and exit. ESC also exits.
• Tooltip truncates from the left (keeps the element's own segments visible, not the root ancestors)
• Settings open in a new tab — Clicking the toolbar icon opens a full-page settings tab instead of a small popup

Improvements

• Highlight, inspector, and picker all use closed shadow DOM — fully isolated from host page styles
• Copy history (last 20 paths) visible in settings tab with format badge, timestamp, and re-copy button; updates live across tabs via BroadcastChannel
• Dark mode toggle in the settings tab, persists via localStorage
• Replaced Firefox popup symlinks with real page.html / page.js files

we have updated the popup to open in new tab ; right now firefox has some issue rendering the extension popup menu