Prune 2.7.0

Fixes a real uninstaller bug (some uninstallers' own windows never came
to the front), plus two new screens: a real "Cookies to Preserve" picker
and a composite Dashboard health score.

Fixed

• Some uninstallers' own confirmation window never came to the front.
  A program's uninstaller (Riot's VALORANT uninstall dialog, confirmed
  live) could genuinely open and sit there, hidden behind Prune's own
  window, with no sign anything had happened -- Windows' own
  focus-stealing prevention was refusing to let a background-spawned
  process's window become the foreground window. Prune now grants that
  right before spawning any uninstaller.
• Deep Clean and Disk Map's own "still working" indicators no longer
  borrow a generic loading pulse -- the row a scan or clean is currently
  reading now sweeps, and Disk Map's file-type bars grow into their
  measured width as the numbers actually arrive, instead of snapping to
  a value that was already final.

Added

• Cookies to Preserve (Settings → Cleanup): scan for the real cookie
  domains on this machine and choose which ones survive a Deep Clean,
  instead of always losing every cookie on a browser's cookie rules. The
  keep-list engine has existed since Deep Clean's rebuilt cleaning engine
  landed in 2.6.0 -- this is the screen to actually use it.
• A composite System Health score on the Dashboard, replacing the
  ring that only ever showed drive wear. It now combines drive health,
  free disk space, broken/orphaned installs and hardware errors into one
  number, with a breakdown line underneath so it's never a mystery figure
  -- and it stays blank rather than guess until the real reads it depends
  on have actually come back.
• Uninstalling now matches Revo Uninstaller's own two-step flow: a
  manual "Scan" step once the uninstaller has actually finished (instead
  of racing into a leftover scan the moment its process exits, which can
  race real background cleanup some uninstallers keep doing), and an
  optional "automatically remove everything found" checkbox that skips
  the review screen -- still fully undoable through Quarantine either
  way.
• More hover and click feedback across the app: every button that wasn't
  already using one of the app's three named button styles now
  acknowledges a click, and checkboxes press with a distinct feel of
  their own.