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 full bullet list from Implementation card bf080d9a — both ruling
batches, including the three appended mid-session by 16ef377:
- Restore subjects compose the inverse, never nest: crossing "Undo: S"
emits "Redo: S" and vice versa; parity, not stack depth, reads a
legacy double prefix (GitHistoryProvider.restoreSubject).
- Git-operation failures join the one-shot failure banner tier:
BannerCenter.GitFailureBanner (undo/redo/branchSwitch/addGit), error
tone at failure rank merged with write one-shots by recency; the
postLoss compromise is retired at both AppModel wirings.
- order/schema optional below the board root: append-at-end reading
(ordered siblings first, folder-name tie-break among the order-less),
schema reads 1, both coerce-tier logged; the root keeps its
requirements. Ranks.resolvedOrders materializes finite ranks so
models and placement math stay untouched; first Writer rewrite
stamps a real rank on touch, placement against an order-less sibling
stamps that sibling inline in the same bracket. Agent guide v10
teaches optional keys and zero-read filing. Hostile-YAML order
shapes become coercion tests; Fixtures/Valid/optional-keys.kanban
replaces the four retired Malformed boards.
- .gitignore is the relocation-heal noise gate: GitignoreRules pure
matcher (standard semantics, board-root file only), loader consults
it once per walk so matched loose files keep the stray posture;
seeded (.DS_Store + .*.lanework-*) at board creation and template
instantiation, healed in when missing at open — repo-nested
included; empty file honored, existing files never edited; the
committer's obedience via libgit2 status is pinned by test.
- Comments crash-residue sweep gates on step ownership: HistoryStep
derives backing from its own undo expectations, backedContent unions
both stacks, the sweep purges per-entry only what no live step owns.
- Skip-purge decoupled (16ef377): a stale-skipped coarse step strands
whole in NativeHistoryProvider.strandedSteps — still backing, retired
only at session end; clean exits purge as before.
- Coarse close step named "Changes to '<card>'"; the fine body-edit
wording never leaks onto the board menu.
- Branch-switch settle clears every open card window's fine stack on
Save All and Discard alike; the empty fold registers no coarse step.
- Close flush awaits its covering snapshot (quiesce + one generation
bump, 1s bound), and an explicit flush now queues behind an
in-flight one instead of skipping — the audit-caught interleaving
could lose a close flush permanently when the debounce fired inside
the close sequence; regression tests force both races.
- Commit comment bullets sort chronologically by created, not UUID.
- The production-unwired CardBodyEditSession.editSessionDidChange seam
is deleted with its seam-only tests.
- Composition-root pins: beginSession composes the committer with the
store's own EchoLedger and binds the announcer (the miswire class).
- Deliberate 06 conformance pass over every 2026-07-31-tagged
sentence: fixed Change-custom-key subjects (the retired named
generic was the only producer), the unbuilt Replace attachment
vocabulary, heal commits now authored Lanework Integrity, the config
reader scopes identity to plain [user] sections, add-git re-runs
detection at create (a stale mode-none could initialize inside the
user's repo), and add-git failures answer at the form or the banner.
Structural residue filed on the Redesign board.
2554 tests / 439 suites green.
Claude-Session: https://claude.ai/code/session_01CqjXB7ASoWtbyoGod68k97
The design corpus ratified that ranges are part of a sensible reading:
an exact-integer width below 1 now coerces to 1 read-side (bytes
untouched) instead of reading as malformed — the width division must
never see a zero or negative unit — while a non-finite order (.nan,
.inf) is now the same loud malformed-order rejection as a non-numeric
one, guarded at the single point where the double arrives so loader
and Writer inherit it together. The symlink-never-traversed rule
turned out to be already enforced (the loader has filtered symlinks
ahead of the directory check since the first commit); it and the
copy-preserves-the-link-verbatim behavior are now pinned by tests,
alongside the two hostile shapes the corpus names (width: 0,
order: .nan). Five new tests.
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