Register Helium (imput, bundle id net.imput.helium) so it is auto-detected
and importable from the picker on macOS like Chrome/Edge/Arc/Brave/Comet,
instead of only via the "From File..." JSON path. Reuses the existing macOS
Chromium decryption path unchanged.
Helium quirks (verified on a real install): its Keychain entry is service
"Helium Storage Key" / account "Helium" (not the usual "<Browser> Safe
Storage"), it stores data under its bundle id, and it keeps cookies at the
legacy <Profile>/Cookies path. Mac-only for now; Windows/Linux data dirs are
unverified so winRoot/linuxRoot are omitted and the source defaults off there.
Claude-Session: https://claude.ai/code/session_01SZzX6ktZaaCUg5PWnzniuC
* Add browser import hint button to the browser toolbar
- Adds a dismissible "Import" button in the browser address bar that opens a popover with browser detection and one-click cookie import
- Persists the hint's dismissed state via `browserImportHintHidden` in `PersistedUIState` so the hint stays hidden after the user clicks "Hide Hint"
- Extracts platform-aware import source labels into `browser-cookie-import-sources.ts` and hint visibility logic into `browser-import-hint-visibility.ts` for isolated testing
* fix the onblur for the import popover
Nicholas Zolton
Jinjing