Resolve the second-pass review findings — comments undo via .trash recursion, search reach, refuse-don't-degrade paste

Thirteen findings cleared with the user (Redesign board: 3 Contradictions + 3 Gaps + 7 Minors → Resolved):

- User template store re-homes to the shared App Group container (09/02) — templates cross editions; App Group implementation card annotated mid-flight.
- Comment delete = move into comments/.trash/ (01/05/13) — the materialized-trash pattern one level down; no byte capture returns on any edition; purge at window close, copies strip it; 13's absolutes stay true.
- Find & search: card-window ⌘F covers the focused comments pane; board search re-ruled to all meaningful card content — comment bodies via a search-owned transient index when comments ship, attributes as they activate (04/01/05); scope options = WISHLIST #10.
- Comments pane visibility = one persisted app-wide bit, à la Show Trash — content-derived auto-show retired (05/11).
- Comment attachments author in-window: composer/inline-edit drop carve-outs + paperclip (05).
- Item-level copies sever remote/remote-state at every level; whole-board forks exempt (01).
- Paste refuses loudly, never degrades — degraded embedded-index.md fallback and its loss row retired; Finder's whole-or-nothing invariant adopted (04/12/02).
- Escape: composer moves focus out (never discards a draft); inline comment edit = Cancel (05/11).
- Minors: 05 three-pane changes bullet, 01 comments-UI parenthetical, 07 TOFU store naming, WISHLIST item 3 trash wording, README deferred-list now points at the findings board.

Claude-Session: https://claude.ai/code/session_01CqjXB7ASoWtbyoGod68k97

DESIGN/12-editions.md

@@ -18,7 +18,7 @@ Separate Mac App Store apps — real Xcode targets, not an IAP unlock. Both edit
 
 - **Pro claims the `.kanban` default on first launch, once.** The purchase is the consent — `.kanban` is the family's own exported UTI, not a shared public type, so the premium edition claiming its own documents is legitimate, and never asking would make the upgrade feel broken (boards keep opening in base). The claim is one-time: a user who later reassigns the default back to base in Finder is respected — Pro never re-asserts. Base never claims and never asks; until Pro's claim, LaunchServices' own resolution stands.
 - **The same board open in both apps at once is fine — it is the designed foreign-writer story, not a new hazard.** Base has no git (the inert-`.git` posture above): it never commits and never touches the repo, so there is no committer contention — base writing into a Pro-open board is exactly an agent writing from a terminal, which Pro's machinery (index.lock retry, flush-before-overwrite, abort-own-leftovers, "both versions exist as commits" — 06/07) was designed for; base sees Pro's writes as ordinary foreign reloads. No board-level lock — 02's files-first rule is absolute (no sidecar files), and no gate: "Open with…" into the second edition just works. Two conveniences ride the shared registry: **open-now flags are per-edition** (like the grant slots — an edition restores only the boards *it* had open), and the board popover carries a contextual awareness line ("Also open in Lanework Pro") read from the other edition's flag, pid-liveness-checked so crash residue never lies — a line, never a gate.
-- **The clipboard staging store homes in the group container** beside the registry, so ⌘C in one edition pastes **full-fidelity** in the other — snapshot, attachments and all (04-interactions.md's staging lifecycle unchanged; both editions' launch/copy sweeps compute the same answer from the same pasteboard). The degraded embedded-`index.md` fallback and its loss row remain for genuinely missing snapshots, no longer the structural cross-edition outcome.
+- **The clipboard staging store homes in the group container** beside the registry, so ⌘C in one edition pastes **full-fidelity** in the other — snapshot, attachments and all (04-interactions.md's staging lifecycle unchanged; both editions' launch/copy sweeps compute the same answer from the same pasteboard). A genuinely missing snapshot **refuses the paste loudly** (04-interactions.md's refuse-don't-degrade ruling, 2026-07-29) — with the shared store, no longer a structural cross-edition outcome.
 
 ## The provider seam