SI-XPath Finder Pro - Live XPath Generator

### Features - **Live hover** — optimized XPath in tooltip follows cursor (throttled + rAF, ~30fps, no lag) - **Click-to-lock** — click any element to freeze selection; Esc to unlock/exit - **4 selectors at once:** Optimized (shortest unique), Relative (`//*[@id="..."]`), Absolute (`/html/body/...`), CSS Selector - **Copy:** individual copy, Copy All, Copy as JS / Selenium Python snippet - **Test/Evaluate:** input any XPath → highlights all matches (up to 50), shows count, handles invalid syntax gracefully - **Match count badge:** ✓ Unique / N matches - **Panel + tooltip** both show live XPath; panel is draggable-safe, never blocks page - **Popup:** toggle inspector, see live XPath without opening DevTools, test XPath, recent history (50 items) - **History** persisted via `chrome.storage.local` - **Keyboard:** `Ctrl+Shift+X` (Command+Shift+X on Mac) toggles inspector - **Shadow DOM & iframe:** `all_frames:true`, uses `document.elementFromPoint` + `CSS.escape`, `document.evaluate` - **Performance safe:** passive listeners, debounced mousemove, `requestAnimationFrame`, no polling, no `setInterval`, minimal `evaluate` calls (capped) - **Works on all Chrome versions 88+** — Manifest V3, no deprecated APIs