* feat(menubar): add native capacity dock
* fix(menubar): harden dock interaction boundaries
* feat(menubar): polish native Capacity Dock for launch
- Flush top-edge docking via NSHostingView safe-area opt-out; shielding
window level so the rail necks into the physical top like the system notch
- Liquid Glass legibility scrim so labels stay readable on light wallpapers
- Weekly-else-monthly headline window; unified severity colour bands
(green <50 / yellow / orange / red) across rings and detail bars
- Squircle gauge + graphite theme defaults; auto-show connected
subscriptions (up to 5) until the user edits the set, then respect it
- Capacity Dock Settings menu item; re-centre the settings window; info
glyph for the About row
- Trim dead provider-credential override fields down to apiKey only
- Reconcile and extend tests for all of the above
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Co-authored-by: iamtoruk <hello@agentseal.org>