The titlebar widget grows from a 20×18 chevron into one button saying
the board's name and, on a git-mode Pro board, its branch — click
anywhere across it and the popover opens as before, anchored to the
widget. BoardInfoTitlebarSummary is the pure seam for both strings
(title falls back to the folder name per 01's naming rule; branch only
under pro + git mode, live off the observable HistoryStore.branch).
Board windows now hide the system title display through the same
hideTitle slot card windows adopted — the widget says the name, so the
chrome would only repeat it — while navigationTitle keeps feeding
window.title to the Window menu, Exposé, VoiceOver and restoration.
The widget also refreshes the branch eagerly at appearance: it used to
populate only once the popover had been opened, which would have left
the new branch line empty on a freshly opened board.
Claude-Session: https://claude.ai/code/session_01CqjXB7ASoWtbyoGod68k97
The card's name renders as part of the card body, so the chrome said it
twice. HostedWindowController gains a titleVisibility slot on the same
retained-slot pattern as the accessory and toolbar (reapplied at attach,
so the macOS 26 provisional-window swap can't lose it); CardWindowHost
opts in beside installToolbar, board windows keep AppKit's default.
window.title itself is untouched — navigationTitle still feeds the
Window menu, Exposé, VoiceOver and restoration.
Known consequence, probed empirically: under .hidden AppKit collapses
title and subtitle into one hidden field, so the "board › lane"
navigationSubtitle disappears with it — and the details sidebar carries
no placement rows, so a card window currently shows its home nowhere.
Filed on the Redesign board to bless or relocate; 05-card-window.md's
subtitle sentence needs reconciling either way.
Claude-Session: https://claude.ai/code/session_01CqjXB7ASoWtbyoGod68k97
The 2026-07-29 integrity design pass, consolidated (DESIGN/01 -
Validation and healing; DESIGN/02 - Components): IntegrityRules
(Storage, pure) is the one home for the identity predicate and
canonical form (BoardWriter.canonicalIdentity deleted, ItemID and the
loader forward to it), the per-field rulebook, uneditable shapes,
per-kind index validation, the reserved-name tables, and the trash
kind discriminator (values trusted - kind: lane/card explicit,
unrecognized falls to shape). LoadResult's ad-hoc channels fold into
one typed Defect stream (looseCardFiles / legacyTombstone /
claimedNameSquatted, per-defect heal signatures); the old accessors
survive as computed views.
HealScheduler (LiveStore) states the six-step heal pattern once -
resting-clear, lock gate, isWritableFile gate (now covering all four
heals), signature memo armed-before-attempt with explicit
clear-on-success, disk re-verify in each write half, one banner-posture
table (BannerCenter keeps all phrasing). The three hand-rolled healers
run on it with behavior preserved - including the
relocation-notice-despite-partial-failure quirk, deliberately. Heals
run at the reload tail AND at registry acquire, closing the
migration-never-fires-at-open asymmetry. Displacement runs first: a
squatted .trash would otherwise fail the migration and arm its memo
against an unchanged picture.
Claimed-name squatters (ruled today, 62c47a2) displace by the shared
Finder-style rename ladder - preserved verbatim, symlinks moved as
links, nothing stamped; AgentGuide's untouchable-skip upgrades to
displace-then-write, the CLAUDE.user.md-taken skip stands. kind stamps
on every create and backfills on any index rewrite via the on-touch
seam (placement resolver stamps nothing when the parent is unknown -
a guessed kind is worse than an absent one; board-root writers declare
theirs). Heal writes mark their EchoLedger receipts (inert in base;
pro-m1's committer will split them into their own commits). The
renumber ask-renumber-ask-again two-step is one shared helper, adopted
at all nine call sites.
69 tests added. 1738 green on both schemes.
Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
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
The window-title widget arrives as a leading titlebar accessory — a
quiet chevron on board windows only, installed and removed by the
window controller's own attach lifecycle — anchoring the one
board-level surface as a transient popover (the board window
deliberately grows no toolbar item for it). Inside: board rename
editing frontmatter title only (the folder is never renamed; an empty
commit removes the key and the window title falls back to the folder
name), the embedded shared style editor permanently targeting the
board, and the labeled Git section that this milestone only reserves
— a mode-none explanation and a disabled stub where m7's add-git,
branch, remote, and authentication controls land. Cmd-I (File >
Board Info) toggles it per window through a focused scene value,
kept apart from board-scoped transient state since a titlebar
popover belongs to one window, not to the board. Escape reverts a
dirty rename field and falls through to dismiss otherwise; a foreign
rename resyncs the field only while unfocused. 12 new tests.
Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
The lane title bar becomes real: leading SF Symbol (hand-written names
render leniently, unknown ones fall back to the level default), title
or secondary untitled placeholder, a quiet count badge that counts
exactly the cards the body renders (so the m5 search filter is
followed by construction), and a new-card button. The whole bar is
the reorder drag surface — no grip — with click-vs-movement splitting
select from drag; a pure proposal function maps the drag to an
insertion index and release commits through the Writer's same-parent
degenerate reorder, compacting and retrying when midpoint precision
runs out. Clicking never edits: inline rename is Return on the sole
selected card or Board > Rename for either kind, a third transient
editor beside the placeholder that tracks its target by UUID, commits
on focus loss, discards silently when the target vanishes, and
removes the title key on an empty commit. The new-card placeholder
renders at last — the settled Cmd-N target rule (pure, tested) files
it after the anchor card, at a selected lane's bottom, or into the
last-active lane; Return commits and re-selects the lane, Cmd-Return
also opens the card window, and a failed create discards the overlay.
New Card / New Lane / Rename land in the menus with focused-editor
and read-only validation; rename gets its own WriteOperation case in
the banner vocabulary. 59 new tests.
Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
rzen