fix(notes): gather sharing behind a Del button so the footer stays tidy

The sharing controls were laid out across the note's footer — the project select,
the whole "Del med personer" panel and the Save/Delete buttons all on one row. It
crammed: "Læg i projekt" wrapped to two lines and the people panel ran into the
rest.

Now one Del button in the footer opens a popover that holds both ways a note is
shared — a project and named people — stacked in a small card. The footer is a
status on the left and Del / Gem / Slet on the right, and nothing wraps. The
button carries a count when the note is shared with someone, so "shared" is
legible without opening it.

The popover closes on a click outside, on Escape, and on switching to another
note — the last tracked by note id, so a save returning a fresh copy of the same
note does not slam it shut mid-use. The inner "add someone" button is now Tilføj,
so it does not read as a second Del.

e2e updated to open the popover before reaching the controls; full Chromium suite
green.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

web/src/lib/locales/da.js

@@ -25,7 +25,8 @@ export const da = {
 	'notes.sharedBy': 'Delt af {name}',
 	'notes.sharePeople': 'Del med personer',
 	'notes.sharePick': 'Vælg en person …',
-	'notes.shareAdd': 'Del',
+	'notes.shareButton': 'Del',
+	'notes.shareAdd': 'Tilføj',
 	'notes.shareRoleViewer': 'Kan læse',
 	'notes.shareRoleEditor': 'Kan rette',
 	'notes.shareRemove': 'Fjern adgang',