Files from Finder land on the board per 04-interactions.md § Drag & drop: - Dropped on a card, they copy into its attachments/ (any type, multi-file), the face highlighting while hovered; the hovered card is resolved by hit-testing the same analytic masonry frames the card zones are built from, so attach-beats-create adds no drop region and cannot drift from the dispatch. - Dropped on lane empty space, one card per file — filename minus extension as the title (a blank stem omits the key), fresh GUID, rank at the drop position through the ordinary insertion machinery, the file attached — all in one bracket; a failed import removes the just-minted card, so creating-then-abandoning never leaves an empty card behind. - Every board drop surface now declares .fileURL beside the two board types (the single-target-dispatch rule); tombstoned surfaces are inert; file sessions ride a distinct session mode with their own watchdog and no hysteresis, leaving the board-drag machinery untouched. - Also: four empty fixture directories pinned with .keep files so git preserves them, and a test-only visibility fix in DragSessionTests. 811 unit tests (12 new). Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
Fixture boards
Golden fixture boards for the storage-contract test suite — real on-disk folder trees, not inline strings, so the same fixtures can later drive XCUITests via the --open-board launch hook.
Bundled into the unit-test target as a folder reference (see project.yml). Valid boards live under Valid/, fail-fast cases under Malformed/. Tests live in KanbanTests/FixtureBoardTests.swift.
Hidden fixture files are named .hidden-* rather than .DS_Store: the repo's .gitignore ignores .DS_Store everywhere, so a fixture spelled that way would exist on the authoring machine and vanish from a fresh clone. The loader's rule is .skipsHiddenFiles — it is about the leading dot, not the name.
Lane/card folder names are fixed literal lowercase-UUIDv4-shaped strings (never generated at test time), chosen so their lexicographic order matches the expected tie-break order — usually a leading digit (10000000-..., 20000000-..., …) so folder order reads the same as array-index order in the tests. That is a fixture-authoring convention, not the loader's gate: the identity predicate is shape-only (8-4-4-4-12 hex, any case, any version — 01-storage-format.md § Fractal layout ▸ Rules), and the case/version coverage lives in KanbanTests/BoardLoaderTests.swift rather than here.
Valid/ — one board per tolerated/valid case
| Board | Case |
|---|---|
rich-board.kanban |
A full-breadth well-formed board: 2 lanes, 3 cards, bodies, styling (background/icon/iconColor/width), unknown + reserved frontmatter keys, attachments/ and comments/ with real content. Its attachments/ also carries all four listing shapes — two ordinary files, a hidden one, and a subfolder with a file — so Card.attachments' flat rule (01-storage-format.md § Attachments) is asserted against a real tree. Also the board every index.md in the tree is round-tripped against. |
interrupted-create.kanban |
The motivating skip-not-error case: a UUID-shaped lane folder and a UUID-shaped card folder, each with no index.md yet (folder created, write not yet landed). |
non-uuid-strays.kanban |
Non-UUID-shaped folders at both lane and card depth, with and without index.md — name shape gates candidacy before the file is ever read. |
stray-files.kanban |
Stray (non-directory) files at board, lane, and card level — never level candidates, never warned about. |
tombstones.kanban |
A tombstoned lane and a tombstoned card, both still on disk and still in the snapshot, flagged (isDeleted) rather than removed. Also proves a tombstoned lane doesn't recursively flag its own un-deleted children. |
duplicate-order-tie-break.kanban |
Three cards sharing one order in one lane, and two lanes sharing one order — both broken by folder name, ascending. |
unknown-key-order.kanban |
Unknown/reserved frontmatter keys interleaved with schema-owned ones at board, lane, and card level — document.unknownFields must preserve exactly the order they were written in. |
coercion.kanban |
Lenient-field coercion and fallback: wrong-type scalars that coerce (title: 2048, iconColor: 42, background: 12345, width: "3") versus ones with no sensible reading that fall back to the default (title: [a, b], background: {x: 1}, width: 1.5), plus a deleted with an unusable timestamp that still tombstones. |
duplicate-top-level-keys.kanban |
A top-level key written twice — at board, lane (the strict order field), and card level. Last occurrence wins; not a fail-fast case (settled, newer than the original card text). Round-tripped to prove the earlier occurrence survives on disk, invisible only to reads. |
board-level-deleted.kanban |
A board-level deleted: key — legal per the frontmatter table but meaningless; ignored + warned, rest of the board loads normally. |
Malformed/ — one board per fail-fast case
Each board is minimal: one broken thing.
| Board | Case |
|---|---|
unparseable-yaml.kanban |
An unterminated flow sequence in the board's frontmatter. |
missing-schema.kanban |
Board root index.md has no schema key. |
schema-newer-than-app.kanban |
Board root schema: 2, newer than BoardLoader.supportedSchema. |
missing-order-lane.kanban |
A UUID-shaped lane index.md with no order key. |
missing-order-card.kanban |
A UUID-shaped card index.md with no order key. |
explicit-null-order.kanban |
A lane's order: key present with no value — reads as missing, not malformed. |
non-numeric-order.kanban |
A card's order: banana — present but not a number. |
board-root-missing-index.kanban |
The board root folder itself has no index.md. |