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/App/ClipboardManifest.swift

@@ -19,7 +19,7 @@ extension UTType {
 ///
 /// **It is self-describing twice over**, and both halves earn their keep:
 ///
-/// - `copyID` ties the pasteboard to a staging directory — `<Application Support>/…/Clipboard/<copyID>/`,
+/// - `copyID` ties the pasteboard to a staging directory — `<group container>/…/Clipboard/<copyID>/`,
 ///   the full folder snapshots a paste reproduces byte-for-byte from — and to a pending cut. It is
 ///   also the whole of "the snapshot survives relaunch exactly as long as the pasteboard still points
 ///   at it": a sweep keeps the one directory this id names and collects every other.