A lane folds to a fixed slim vertical strip carrying its glyph, its card-count
badge and its title turned on its side, and the strip is deliberately not part
of the window's division: the expanded lanes' units divide what is left once
each folded strip's fixed width has come off the top, so folding a lane is a
re-divide trigger of the Show/Hide Trash family — the window never moves and
the siblings grow into what the lane gave up.
The state is a first-class lane frontmatter key, `collapsed: true`, and
document state exactly as `width` is: the files are the board, so an agent
folds a lane by writing one key. Absent means expanded, expanding removes the
key rather than writing `false` (the remove-at-default family beside a
one-unit `width`, the empty rename's `title` and the None well's
`background`), and the lane's `width` rides along untouched so expanding
restores the lane the user had. The read is `width`'s leniency one type over —
a boolean scalar or a quoted boolean word reads as itself, everything else has
no reading at all and renders as expanded, bytes preserved either way.
Toggling is the header's always-visible collapse chevron, the lane context
menu's single Collapse Lane / Expand Lane row, and a plain click anywhere on
the strip; a modified click on the strip stays the ordinary selection grammar,
so a folded lane is still selectable by pointer. The title reads bottom-up and
is justified to the top of the room below the strip's chrome (owner ruling
2026-08-08), truncating against the strip's own height.
While folded the lane draws no cards at all, which is what makes every
exclusion true by construction rather than by a guard per gesture: no card
face means no marquee target and no navigation frame, and no registered grid
means the masonry's drop zones have nothing to resolve against. What did need
code is the half that names absolute destinations — the option-arrow jumps and
the arrow seed scan past a folded lane, the lane domain's down-arrow is inert
on one, and New Card skips it (a selection inside one falls through to the
last-active lane, the stale selection's rule). A drop on the strip appends at
the lane's end, cards and Finder files alike, with an accent edge standing in
for the shadow the strip has no masonry to open; there is no hover-to-auto-
expand yet. Lane reorder works on the strip, and a dragged folded lane carries
its fold, so its shadow and its replica are the strip rather than its units.
The write is `writeLaneWidths` clause for clause — one `updateIndex` bracket,
the same stamp behaviour, the same three do-nothing paths — with two new
`WriteOperation` cases and two new undo verbs rather than one of each, because
a banner or an Edit-menu row that said "resize" after Collapse Lane would name
a control the user never touched.
Claude-Session: https://claude.ai/code/session_014PtZdPwqZuqEDLc6wZMtEy
background is {color:, image:} and only a mapping at every level; the board's image paints the full window under a transparent title bar, with a thin-material frost strip keeping the chrome legible and the standard accommodations intact.
Claude-Session: https://claude.ai/code/session_014PtZdPwqZuqEDLc6wZMtEy
The kind: comment field table lands in IntegrityRules (the per-kind
hook's first exercise), CommentThread reads one card's thread
window-scoped (the board walk stays O(cards)), and CommentWriter gains
the five gestures: draft save, post (rename .draft to a fresh UUID,
created/modified restamped in the bracket), edit, delete into
comments/.trash/, and the purge with its crash-residue memo. Post and
delete register move-based undo steps; draft saves, edits, and the
purge deliberately register nothing (13's no-capture rule). Copy
boundaries strip comments/.trash, carry .draft verbatim, and remint
threads; comments graduates to a displacing claimed name, with .draft,
.trash, and a comment's attachments claimed one level down.
CommentPath classifies changed paths into the 06 verb family for
later announcer/composer wiring.
One stated narrowing pending a ruling (filed on the findings board):
the copy transaction's refuse-whole preflight stays cards-and-lanes —
an unstampable copied comment copies verbatim with a log line, because
comment defects never refuse.
Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
Nine rulings land as code. Reorders don't stamp — one container-change
predicate (WriteOperation.rewritesOrderOnly): within-container reorders
and the renumber rescale rewrite only order, while cross-lane, cross-board,
and trash moves stamp modified and clear modified-by; no trash special
case exists, and the m8 undo inverses conform through the same seam.
Copies are transactions: the root-strict/nested-lenient split retires for
a whole-subtree stampability preflight that refuses loudly naming the
offender, and every item-level copy severs remote/remote-state at every
level (whole-board forks carry them verbatim). Paste refuses, never
degrades: the embedded-index.md materialization and its loss row retire;
a missing staged snapshot produces nothing and posts an error-tone
one-shot named from manifest metadata. Coerce-tier fallbacks log through
the Defect stream with path context attached loader-side. Displacement is
level-uniform: a file squatting attachments inside a card heals by the
same rename ladder as board-root squatters; comments stays tolerated.
Delete Immediately joins card and lane context menus as Delete's
⌥-alternate with its own VO custom action, routed through an explicit
container so the menu target outranks standing selection. Agent guide v7
teaches the stamp discipline and the card-level attachments claim, and
sheds two stale v6 lines (lanes trash now; kind is taught). Verified
conformant, unchanged: edition-aware Undo/Redo disable, trash marquee
full-height backdrop.
Both schemes 1854 tests / 318 suites green; verify-editions 30/30.
Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
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
The single point through which every mutation becomes a filesystem
operation: read fresh from disk (strict byte-faithful UTF-8), refuse
readable-but-uneditable frontmatter shapes, apply the edit through the
span engine, stamp modified / clear modified-by, then temp-file+rename
atomically. Renumber-visible-children is the sole minimal-touch
exception, tombstones untouched. Structured BoardWriteError carries
operation + path + reason for the future banner surface.
Alongside, three edges the card surfaced:
- The loader now decodes byte-faithfully too, so a BOM'd or non-UTF-8
index.md is rejected at load per the encoding contract, instead of
loading via NSString's silent BOM strip and then refusing every write.
- An appended frontmatter line adopts the file's prevailing line ending
(a CRLF file stays uniformly CRLF when a stamp first lands in it).
- Empty-but-not-blank frontmatter ({}, null, ~) is detected as
uneditable — appending after it would be unparseable YAML.
30 new unit tests; 176 total green.
Claude-Session: https://claude.ai/code/session_018BjQRYBR6jQja3jCRi5S3A
rawValue and the coercion/malformed paths now stop at the quote-aware
inline-comment boundary, so 'title: 2048 # note' coerces to "2048"
and a read-then-write no longer compounds the comment (pinned
idempotent). Strictly read-side; round-trip bytes untouched. +6 tests
(124 total).
Claude-Session: https://claude.ai/code/session_018BjQRYBR6jQja3jCRi5S3A
Duplicates: Yams' duplicate-key error is disarmed by placeholder-
renaming first occurrences and re-composing (line count preserved, so
span layout stays exact); reads take the last occurrence, set()
rewrites the winner and clears earlier twins, remove() clears all.
Top-level only — nested duplicates stay YAML errors (doc updated).
Re-splice: an inline comment on a rewritten scalar line survives, with
quote-aware detection so a # inside quotes is never a comment. +31
tests (118 total).
Claude-Session: https://claude.ai/code/session_018BjQRYBR6jQja3jCRi5S3A
rzen