Home app-side state in the shared App Group container

Every edition declares group.dev.rzen.indie.Kanban and homes its
app-side state there from day one (12-editions.md ruling 2026-07-29):

- AppGroup namespace: container resolution with per-edition fallback
  when unprovisioned, shared UserDefaults suite, edition identity, and
  a unit-test-host redirect (the test host IS the app — its launch
  sweep and recents refresh must not touch the real shared container).
- BoardRecord: bookmark/isOpenNow replaced by per-edition grants and
  openNow keyed by bundle id; hand-written Codable keeps legacy keys
  decoding (adopted in memory as the running edition's slots, upgraded
  on first save); every other field stays common.
- RecentBoard gains needsReopen: no grant of ours but somebody's —
  first click runs an open panel pre-anchored at the recorded path,
  prompt "Grant"; recordOpen mints this edition's slot onto the
  matched shared record (path fallback only after identity fails and
  only against records holding no grant of ours, so re-granting never
  forks the record).
- Cross-edition freshness: stat-cheap mtime+size stamp re-reads the
  registry when the sibling edition wrote it, so one edition's save
  never erases the other's records wholesale.
- restorables() filters on this edition's open-now flags; the board
  popover gains BoardEditionPresence ("Also open in Lanework Pro"),
  pid-liveness-checked so crash residue never lies.
- Clipboard staging store moves to the group container; the sweep
  claims doomed trees by atomic rename into .sweeping/ then deletes,
  so the sibling's concurrent sweep is a non-event.
- Template store re-homed to the group container per the 09-templates
  re-ruling; scalars (quick-style recents, window size) move to the
  shared suite.
- verify-editions.sh: 30 checks (each edition carries exactly the
  family group). No pathfinder 1.x migrator: 1.x predates the
  registry; state starts fresh in the group container.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY

Kanban/Kanban.entitlements

@@ -8,5 +8,17 @@
 	<true/>
 	<key>com.apple.security.files.bookmarks.app-scope</key>
 	<true/>
+	<!-- The family App Group (12-editions.md ▸ Distribution, ruled 2026-07-29). Every edition
+	     declares this same group id, and the board registry with its app-wide peers — the
+	     clipboard's staging store, the shared defaults suite — homes in its container from day
+	     one, so a paying upgrader launches Pro onto their own recents rather than an empty
+	     screen. **It must be in base's shipped entitlements**: base ships first, and an edition
+	     that joined the group later would have a migration to do. Security-scoped bookmarks are
+	     the stated exception — they never cross sandboxes, group or not, which is why each
+	     edition holds its own grant slot on the shared record. -->
+	<key>com.apple.security.application-groups</key>
+	<array>
+		<string>group.dev.rzen.indie.Kanban</string>
+	</array>
 </dict>
 </plist>