Both editions installed is a supported steady state — handler, races, clipboard ruled

Ruled 2026-07-29, new block in 12: Pro claims the .kanban default on first launch once (the purchase is the consent; a manual reassignment back is respected; base never claims). The same board open in both apps is the designed foreign-writer story — base has no git so there is no committer contention, no board-level lock (files-first stays absolute), no gate; open-now flags go per-edition on the shared record so restoration stays edition-local, and the popover gains a pid-liveness-checked "Also open in Lanework Pro" line. The clipboard staging store homes in the App Group container, making cross-edition copy/paste full-fidelity; the degraded fallback remains for genuinely missing snapshots.

Board: Gap card 7a244f9f → Resolved (Gaps lane now empty); App Group Implementation card gains the flags/staging/handler bullets.

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

DESIGN/04-interactions.md

@@ -25,7 +25,7 @@ Selection, drag & drop, keyboard, clipboard, search. This is where the old app s
 
 ## Clipboard
 
-- ⌘X/⌘C/⌘V on cards **and lanes** (resettled — lanes joined the clipboard so cross-board structure transfer has a keyboard path under the every-function contract; the cards-XOR-lanes selection rule means the clipboard holds cards or lanes, never both). Hybrid clipboard: pasteboard carries a JSON manifest + plain text; full folder snapshots staged in Application Support so paste reproduces the item byte-for-byte — cards, attachments and all — across boards. Each manifest entry embeds the full `index.md` as a staging-less fallback (a lane entry embeds its cards' too, attachment-less). **Staging lifecycle** (settled): snapshots are staged **eagerly at ⌘C/⌘X time** — copy captures the source as it is at the gesture, immune to later deletion or unmount — and the store holds at most the *current* copy: a new Lanework copy replaces the previous snapshot, and a sweep at launch and on each copy purges entries the pasteboard no longer references (another app taking the pasteboard orphans the snapshot; the next sweep collects it). The snapshot survives relaunch exactly as long as the pasteboard still points at it — a copy made before quitting pastes whole after restart. **A paste is an import boundary, so normalization applies** (settled 2026-07-28 — 01-storage-format.md's loose-file rule): loose files the staged snapshot carries beside a card's `index.md` land in the pasted card's `attachments/`, Finder-renamed on collision — nothing the snapshot preserved is dropped on arrival. **A degraded paste is loud, never silent** (the banner vocabulary — 02-architecture.md): if the staged snapshot is missing or unreadable at paste time, paste falls back to the embedded `index.md` — content intact, files absent — and a **loss row** (warning tone, user-dismissed) names what was lost with true totals, attachments and loose files alike, folding plurals ("Pasted 'Fix login' without its 3 attachments"; "Pasted 2 items without their 5 files" — BannerCenter owns the phrasing, the manifest records each entry's staged file count so the totals stay honest); the user never discovers an empty `attachments/` later. **The pasteboard is re-read lazily, and the brief lie is accepted** (settled): changeCount is checked on activation, on menu validation, and before paste — no timers; a background app taking the pasteboard while Lanework stays frontmost can leave Edit ▸ Paste enabled until the next check, and the paste itself re-validates and no-ops — nothing stale ever lands, which is the guarantee that matters.
+- ⌘X/⌘C/⌘V on cards **and lanes** (resettled — lanes joined the clipboard so cross-board structure transfer has a keyboard path under the every-function contract; the cards-XOR-lanes selection rule means the clipboard holds cards or lanes, never both). Hybrid clipboard: pasteboard carries a JSON manifest + plain text; full folder snapshots staged in the shared App Group container (12-editions.md — so a copy in one edition pastes full-fidelity in the other) so paste reproduces the item byte-for-byte — cards, attachments and all — across boards. Each manifest entry embeds the full `index.md` as a staging-less fallback (a lane entry embeds its cards' too, attachment-less). **Staging lifecycle** (settled): snapshots are staged **eagerly at ⌘C/⌘X time** — copy captures the source as it is at the gesture, immune to later deletion or unmount — and the store holds at most the *current* copy: a new Lanework copy replaces the previous snapshot, and a sweep at launch and on each copy purges entries the pasteboard no longer references (another app taking the pasteboard orphans the snapshot; the next sweep collects it). The snapshot survives relaunch exactly as long as the pasteboard still points at it — a copy made before quitting pastes whole after restart. **A paste is an import boundary, so normalization applies** (settled 2026-07-28 — 01-storage-format.md's loose-file rule): loose files the staged snapshot carries beside a card's `index.md` land in the pasted card's `attachments/`, Finder-renamed on collision — nothing the snapshot preserved is dropped on arrival. **A degraded paste is loud, never silent** (the banner vocabulary — 02-architecture.md): if the staged snapshot is missing or unreadable at paste time, paste falls back to the embedded `index.md` — content intact, files absent — and a **loss row** (warning tone, user-dismissed) names what was lost with true totals, attachments and loose files alike, folding plurals ("Pasted 'Fix login' without its 3 attachments"; "Pasted 2 items without their 5 files" — BannerCenter owns the phrasing, the manifest records each entry's staged file count so the totals stay honest); the user never discovers an empty `attachments/` later. **The pasteboard is re-read lazily, and the brief lie is accepted** (settled): changeCount is checked on activation, on menu validation, and before paste — no timers; a background app taking the pasteboard while Lanework stays frontmost can leave Edit ▸ Paste enabled until the next check, and the paste itself re-validates and no-ops — nothing stale ever lands, which is the guarantee that matters.
 - **Cut is Finder-style deferred**: cut items dim in place until paste moves them; voided if another app takes the pasteboard or the source board closes; second paste materializes copies. **Deletion voids per item**: a cut item that is deleted (moved to the trash or destroyed) or vanishes externally before paste drops out of the pending cut — 02-architecture.md's UUID-set rule; transient state never resurrects what's gone — so paste moves only the survivors, and a cut voided down to nothing is simply void (paste disabled, no error).
 - Paste lands after the anchor card (or appends to a selected lane); a multi-selection anchors at its last member in flatten order — the ⌘N target rule's shared anchor (The map below). Copies keep `created` (a duplicate is a fork) and take fresh GUID/`order`/`modified`. **A trash selection never anchors paste** (settled — the ⌘N target rule's own wording, returned to the precedent it cites): ⌘V stays enabled and behaves exactly as with nothing selected — a card payload appends to the last-active lane, a lane payload lands at the board's right end; the trash is never the destination (▸ The trash), and a trashed card's live disk-lane never leaks in as "the selected card's lane".
 - **Lane paste** lands after the anchor lane — the selected lane, or the selected card's lane (several selected: the last, per the shared anchor rule); nothing selected = the board's right end. Semantics mirror the drag pair above exactly: a pasted *copy* takes fresh GUIDs throughout; a cut-paste is the ⌘-drag move — the folder moves whole (nothing lane-nested to strip or carry — the trash is board-level, resettled 2026-07-28). **Pasting into the source board is supported and is the within-board lane duplicate** (settled): fresh GUIDs apply as anywhere else, no menu-validation special case — the drag path deliberately lacks this operation (⌥ ignored on lane drags, above), the clipboard is its one home.