# Lanework

A native macOS kanban app whose boards are plain folders and Markdown files. Every board, lane, and card is a folder with an `index.md` (YAML frontmatter + Markdown body); the filesystem is the source of truth and the app is a live view over it.

The defining consequence: anything that can read and write files is a first-class user of a board — text editors, Finder, shell scripts, git, and above all AI agents. Lanework's job is to be the best *human* surface over that substrate.

## Key features

Lanework is in early development. This list tracks what has actually shipped and grows milestone by milestone; the full design lives in [DESIGN/](DESIGN/).

- **Storage contract, read side** — frontmatter engine with a byte-perfect round-trip guarantee (unknown keys, comments, and formatting survive every rewrite; duplicate keys read last-wins; wrong-type scalars coerce read-side), gapped fractional ordering (Ranks), and a fail-fast board loader with UUID-gated level detection, warning-collecting skips, and tombstone-aware snapshots — pinned by a golden fixture suite of 18 on-disk boards.
- **Storage contract, write side** — BoardWriter turns every mutation into an atomic temp-file+rename over exactly the files it touches: creates mint lowercase-UUIDv4 identities and `.kanban` packages; moves keep the UUID (with per-folder collision repair at the cross-board import boundary); copies mint fresh identities at every level; deletes are in-place tombstones with position-perfect restore and physical purge; attachment imports never overwrite and never refuse (Finder-style renames). Every app write stamps `modified`, clears `modified-by`, and preserves everything it didn't change byte-for-byte; readable-but-uneditable frontmatter shapes refuse loudly instead of corrupting.
- **Live store** — every open board is one shared, watched, in-memory snapshot: an FSEvents folder watcher (debounced, `.git`-filtered, origin-reconciling) drives whole-tree reloads with a generation guard and single-flight coalescing; write brackets suppress self-echo; a file-identity-keyed store registry refcounts stores and watchers across windows and absorbs root renames via bookmark re-resolution (a vanished root locks the board and watches for its return); plus the board registry (recents, bookmarks, cached counts), the banner center's single precedence order, the dirty-buffer guard, and transient UI state.
- **Window architecture** — the three window types and their lifecycle: a welcome window (branding, failed-open reporting), one board window per root (per-board frame memory, repositioned onto a live screen), and at-most-one card window per card (last-used size, cascaded; follows its card across lanes; dismisses on delete, tombstone, or cross-board move). Closing a board window or quitting runs one strict close flush — card sessions end, pending work drains, the registry is stamped — before the store tears down; launch restores the boards whose open-now flags survived quit (or crash), a preference gating only whether the flags are consulted.
- **The board** — every lane always on screen, the window's width dividing across the lanes' width units with no horizontal scroll: cards flow into as many interior masonry columns as a lane is wide, a right-edge drag resizes between whole units by growing the *window* (snapping at the gap with release hysteresis, hard-stopping at the screen with rubber-band feedback), and ⌥⌘→/⌥⌘← re-divide the existing width instead. Lane chrome is a per-lane SF Symbol (unknown names fall back leniently), title or untitled placeholder, a card-count badge that counts exactly what's rendered, and a new-card button — the whole title bar doubling as the reorder drag surface, a plain click selecting the lane and movement carrying it above its siblings while they show the would-be order.
- **Creating and renaming** — New Card (⌘N) files into the selected card's lane immediately after it, a selected lane's bottom, or the last-active lane, opening a focused pseudo-card that exists nowhere on disk until its title commits (Return commits and re-selects the lane, ⌘↩ also opens the card window, Escape or clicking away discards, and a failed create discards rather than waiting for a card that can't arrive). Inline rename — Return on a card, Board ▸ Rename for either kind — tracks its target by UUID, so a foreign move mid-edit is invisible and a tombstone or deletion discards the edit silently; committing empty removes the `title` key rather than writing a blank one. New Lane is ⇧⌘N. Every mutating command disables while an editor holds the keyboard and under the read-only lock.

## Development

The Xcode project is generated — `project.yml` is the source of truth, not the `.xcodeproj`:

```sh
xcodegen generate
xcodebuild build -project Kanban.xcodeproj -scheme Kanban -destination 'platform=macOS'
xcodebuild test  -project Kanban.xcodeproj -scheme Kanban -destination 'platform=macOS,arch=arm64'
```

macOS 26+, Swift 6 (strict concurrency), SwiftUI, sandboxed. Internal codename `Kanban` (target, scheme, bundle id `dev.rzen.indie.Kanban`); the app ships under the display name **Lanework**.