LaneView and CardFaceView become Equatable and are instantiated through
.equatable(): the strip's body re-runs on every drop-proposal change, and
without the gates that rebuilt every lane and every card face on every
cursor move of a drag. The == compares value inputs and window-lived
collaborator identities; the closures BoardView rebuilds each pass are
deliberately excluded (BoardDropContext.isEquivalent / MarqueeControl.
isEquivalent / CardFaceRole.isEquivalent own that judgment). Observation
reads inside the bodies still self-invalidate — the lane under the drag
keeps re-running; the other lanes stop.
Ports the pathfinder's CardView/ColumnView gating pattern (drag-perf
suspect #2, card cbb6e476).
Claude-Session: https://claude.ai/code/session_01CqjXB7ASoWtbyoGod68k97
Phase 2 swaps every consumer: Liveness and its ancestor walk are gone,
replaced by ItemContainer — a UUID set plus the container side it
lives on, presence the whole test, one selection boundary instead of
the old liveness law. Deletion stages by place: board cards move to
the trash at a store-minted head rank, trash-side delete is permanent
behind its confirmation, Delete Immediately skips the trash from
anywhere, lane delete captures the subtree and removes the folder.
Restore has no method at all — moveCards resolves members in either
container, so drag-out and cut-paste are the ordinary moves 13 calls
them, registering ordinary Move steps. The delete inverse moves the
card back to its captured lane and rank; redo replays the captured
trash rank, a value the gesture actually wrote; lane undo recreates
the subtree byte-faithfully in session. Purges register nothing —
where 13's trash section contradicts its own Rules on that, Rules
wins, filed for ruling. Staleness collapsed to present-or-absent: a
container is a path, so a foreign restore fails the delete step's
expectation structurally. Legacy tombstones migrate on the loose-file
tail hook, cards oldest-first so minting above top reproduces the
retired newest-first column, lanes returning live, one folded loss
row naming both directions. Put Back, restoreByDrag,
receiveRestoredCards, TrashEntry, and the kind machinery are deleted;
the trash column renders the container correctly with its full face
rework left to phase 3.
Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
Creation now clears the search by mechanism, not gesture: one seam
(noteUserCreation) states 04's rule once, called from the placeholder
funnel, paste — cards and lanes, after the staleness guard so a stale
paste clears nothing — and Finder file-drop creation; the attach path
deliberately doesn't clear, and cross-board arrivals and New Lane stay
outside the seam (a transfer isn't creation; a lane can't be born
invisible). An open inline rename now survives the filter hiding its
card: the model already kept the editor, but the field renders in the
card's slot, so renderedCards keeps the renaming card's slot exactly as
long as the editor is open — the query stands throughout, and commit or
Escape lets the predicate apply in the same pass. Verified conformant
and newly pinned: query-emptied lanes keep their slot with a 0 badge,
pasteboard staleness (takeover before paste and mid-staging both no-op),
out-transition reachability and the strip pre-divide hold by
construction with comments citing their rulings.
Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
The board's live title+body filter per 04-interactions.md § Search:
- SearchFilter — a pure value folding the query once (case- and
diacritic-insensitive substring, locale-stable); title OR body matches,
attachment filenames never searched; only the literal empty string is
inactive.
- One universe: the filter threads through SelectionGrammar's order lists
as a defaulted parameter, so ranges, Select All, arrow navigation, the
marquee, drop zones, count badges, and the shown trash all read the same
filtered set by construction; lanes are deliberately never filtered out
(an emptied lane keeps its slot with a 0 badge). Hidden cards leave the
selection through the existing constrain primitive, run on every query
change and as the last line of the reload resolve; the delete successor
is filtered so ⌫ never selects a hidden neighbour.
- The field: an NSSearchField-backed toolbar item (the toolbar's sole
default item); Edit ▸ Find ⌘F focuses it through a focused-value
presentation; stock field-editor dispatch — Return swallowed, Tab is the
keep-filter path to the board, board commands stay enabled except the
caret-chord pair, now one shared caretChordsYield expression.
- Escape is staged: clear the non-empty query (focus stays), hand an empty
field back to the board, clear an active search from board focus —
before Escape's clear-selection meaning.
- Creating a card clears the search (the placeholder funnel); a rename
deliberately gets no carve-out; filter reflow rides the content spring
keyed narrowly on the query.
903 unit tests (24 new).
Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
The second half: system drag sessions over phase 1's model, per
DRAG-REORDER.md and 04-interactions.md § Drag & drop.
- Card faces, lane headers, and trash rows drag as NSItemProvider sessions
(two exported UTTypes, JSON payload in flatten order, plain-text titles as
the secondary representation) — replacing m4's custom lane-reorder gesture
and trash drag-out wholesale; the app-wide DragSession carries the members,
the frozen dragged sizes, the live proposal, and the effective operation.
- Three drop delegates (lane masonry, strip, window fallback), each accepting
both types and routing internally per the single-target-dispatch rule; the
cursor is the physical mouse converted to strip space; proposals come from
DropSlotMath with hysteresis threaded through, and the lane-strip proposal
clamps in front of the shown trash.
- Locality picks the default — move within a board, copy across, the badge
tracking live; ⌥ forces copy (ignored on within-board lane drags), ⌘
forces move; trash rows restore within their board (positional), copy out
across boards by default, ⌘ forcing the true restore-move.
- N contiguous shadows with reflow keyed on the proposal; the
committed-overlay hold renders the dropped arrangement until the reload
echo lands (1.5 s dissolution deadline for refused writes); the
re-grounding trio: geometry re-derives per render, proposals re-validate
by liveness at release, an emptied drag cancels itself.
- Edge autoscroll (ticking driver over DragAutoScrollMath, re-targeting per
step), the mouse-up-gated late-event cleanup, and the polling watchdog —
the pathfinder's lifecycle traps, ported.
- Store: moveLanes and multi-card restoreByDrag join the one-bracket drop
commits.
784 unit tests.
Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
The board's fixed grammar keys and the menu-backed chords of
04-interactions.md § Keyboard, per the Command Nexus inventory:
- Spatial arrow navigation (NavigationMath.nearest over the marquee
registry's frames — one geometry source), walking across interior
masonry columns, lanes, and into the shown trash; ⇧-arrows extend via
the same range function as ⇧-click and go inert at the liveness and
kind boundaries; ⌥-jumps with the ⌥↑ lane-domain escalation and ↓
descent; the empty selection seeds at the first lane's first card;
selection scrolls into view.
- selectionHead — the navigation cursor beside the anchor, set by every
click, moved by every arrow, dropped by the reload vanish rule.
- Board ▸ Open Card ⌘↩ (the one command enabled mid-edit: commits the
placeholder or rename and opens), Move Up/Move Down ⌥⌘↑/⌥⌘↓
(within-lane sort, gather-then-step, rank-permuting writes in one
bracket), Move Left/Move Right ⌘←/⌘→ (sole lane, one slot, never the
trash) — all validating and acting off one shared answer.
- Delete now selects the Finder-style successor sibling from the
pre-write snapshot, so repeated ⌫ walks down a lane; external
vanishing still only shrinks the selection.
- handleReturn rejects modified Returns; the trash column renders
eagerly so every row stays registered for navigation and the marquee.
686 unit tests (27 new).
Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
The full pointer grammar of 04-interactions.md § Selection, stated once
as a pure function (SelectionGrammar) and reached through one store
funnel from every click surface — card face, lane header, lane empty
space, trash row:
- Plain click replaces and anchors; the lane surfaces (header and empty
space alike, per the settled one-lane-click-behavior rule) toggle off
on a sole-membership repeat.
- ⌘-click toggles within a homogeneous set; crossing any axis — cards
XOR lanes, live XOR trashed, card entries XOR lane entries in the
trash — degrades to a replace, so no click can produce a mixed
selection.
- ⇧-click ranges from the anchor in the (side, kind) order list: flatten
order for cards, lane order for lanes, the trash's deterministic sort
filtered to kind — the pointer twin of the keyboard's boundary rule
(the keyboard goes inert, the pointer skips).
- The rubber band (MarqueeSession/MarqueeMath) arms from lane empty
space, the board backdrop, and the trash column; side frozen at the
origin, trash bands homogeneous by topmost kind, frames self-registered
in strip space, geometric begin guard, never animated.
- Fast plain double-click opens the card window (⌘↩'s pointer twin);
Select All answers the standard Edit menu item via the responder
chain, trash- and kind-respecting.
- The range anchor lives in TransientBoardState beside the selection and
obeys the same reload vanish rule.
659 unit tests (28 new in SelectionGrammarTests).
Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
rzen