Build AgentGuide — versioned CLAUDE.md maintenance

The app-owned agent guide at every board root (DESIGN/08 ▸ The agent
guide): version-gated by a first-line marker (v5, superseding the
pathfinder's v4 guides on real boards), rewritten when missing or older,
byte-for-byte untouched when current or newer. A markerless CLAUDE.md is
displaced to CLAUDE.user.md when that name is free — never clobbered —
and the guide write is skipped with a log when it isn't. Symlinks,
folders, and read-only volumes are skipped in silence; the write rides
performWrite's bracket as an app-mediated Writer operation (new
WriteOperation.agentGuide), so the echo lands appMediated and the
Pro-era committer can attribute it honestly later.

Hooked at store acquire (beside the loose-file relocation, after the
watcher exists) and on every successful reload — the guide self-heals
from foreign deletion or rollback, pre-wiring 06's acknowledged undo
bounce. The refresh memo arms before each attempt and clears on a
successful write, so a failing write can't hot-loop and a foreign
deletion stays healable. First-line-only marker parsing (no Regex);
guide content is one swappable literal, finalized under the next card.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY
This commit is contained in:
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import Foundation
import Testing
@testable import Kanban
/// The agent guide, end to end (08-agent-integration.md The agent guide).
///
/// The rule is three promises, and this file is organized as them:
///
/// 1. **The marker decides, and only the first line carries it** the version gate, parsed as a
/// pure function of text.
/// 2. **The decision is pure** write, leave alone, displace, or skip, from what the two claimed
/// board-root names look like on disk and nothing else.
/// 3. **Nothing the user owns is ever destroyed** a markerless `CLAUDE.md` is rescued, a taken
/// `CLAUDE.user.md` cancels the write outright, a symlink or a folder is not touched at all, and
/// a current guide is not even opened for writing.
///
/// Every on-disk claim is read back as **raw bytes**, never through a snapshot: the promises are
/// about the files. `WriterFixture`, `Ident` and `Item` come from `WriterTestSupport.swift`.
// MARK: - Shared fixtures
/// A one-lane board enough tree that a reload has something to walk.
@MainActor
private func makeBoard() throws -> WriterFixture {
let fixture = try WriterFixture()
try fixture.item("", Item.board)
try fixture.item(Ident.lane1, Item.rich(order: "1024", title: "Todo"))
return fixture
}
/// A guide-shaped file at some version the shape an older app version left behind, or one a newer
/// version will.
private func guideText(version: Int) -> String {
"<!-- lanework-agent-guide v\(version) — created and kept up to date by the Lanework app. -->\n\n# This folder is a Lanework kanban board\n"
}
/// A file's bytes and mtime "this file was not rewritten", stated the way `LooseFileRelocationTests`
/// states it.
private func stat(_ url: URL) throws -> (bytes: Data, modified: Date) {
let attributes = try FileManager.default.attributesOfItem(atPath: url.path)
guard let modified = attributes[.modificationDate] as? Date else {
throw NSError(domain: "AgentGuideTests", code: 1)
}
return (try Data(contentsOf: url), modified)
}
private func guideURL(in fixture: WriterFixture) -> URL {
fixture.root.appendingPathComponent(AgentGuide.filename)
}
private func userFileURL(in fixture: WriterFixture) -> URL {
fixture.root.appendingPathComponent(AgentGuide.userFilename)
}
/// Writes raw bytes to one of the two claimed board-root names, without going near the app.
@discardableResult
private func writeRoot(_ name: String, _ bytes: Data, in fixture: WriterFixture) throws -> URL {
let url = fixture.root.appendingPathComponent(name)
try bytes.write(to: url)
return url
}
/// Counts the bracket calls a store makes, standing in for the watcher the registry wires up.
@MainActor
private final class GuideBracketLog {
private(set) var begins = 0
func attach(to store: BoardStore) {
store.watcherBrackets = (begin: { self.begins += 1 }, end: {})
}
}
/// Polls until `condition` holds or the deadline passes generous, because FSEvents delivery is not
/// a bounded-latency promise (`BoardStoreRegistryTests`' idiom).
@MainActor
private func waitUntil(_ deadline: Duration = .seconds(15), _ condition: () -> Bool) async {
let start = ContinuousClock.now
while ContinuousClock.now - start < deadline {
if condition() { return }
try? await Task.sleep(for: .milliseconds(25))
}
}
/// Gives a freshly started stream a beat to register with `fseventsd` see `FolderWatcherTests`.
@MainActor
private func settle() async {
try? await Task.sleep(for: .milliseconds(300))
}
// MARK: - 1. The version marker
@Suite("Agent guide ▸ the marker")
struct AgentGuideMarkerTests {
@Test("The guide the app ships carries the current marker in its first line")
func shippedGuideCarriesTheMarker() {
let firstLine = String(AgentGuide.content.prefix { !$0.isNewline })
#expect(firstLine.contains("lanework-agent-guide v5"))
#expect(AgentGuide.installedVersion(of: AgentGuide.content) == AgentGuide.version)
// Files the app creates end with LF (01-storage-format.md § Encoding and line endings).
#expect(AgentGuide.content.hasSuffix("\n"))
#expect(!AgentGuide.content.hasSuffix("\n\n"))
}
@Test("Any version in the first line parses")
func versionsParse() {
#expect(AgentGuide.installedVersion(of: guideText(version: 1)) == 1)
#expect(AgentGuide.installedVersion(of: guideText(version: 4)) == 4)
#expect(AgentGuide.installedVersion(of: guideText(version: 12)) == 12)
}
@Test("A file with no marker has no version")
func markerlessHasNoVersion() {
#expect(AgentGuide.installedVersion(of: "# My project\n\nNotes for agents.\n") == nil)
#expect(AgentGuide.installedVersion(of: "") == nil)
// The prefix without a number is not a marker either.
#expect(AgentGuide.installedVersion(of: "lanework-agent-guide vNext\n") == nil)
}
/// **The deliberate divergence from the pathfinder** (08: "version marker in the first line"):
/// a user's own file that merely *quotes* the marker further down is not an app-owned guide, and
/// reading it as one would overwrite it.
@Test("A marker below the first line does not count")
func markerBelowTheFirstLineIsNotAMarker() {
#expect(AgentGuide.installedVersion(of: "# Notes\nlanework-agent-guide v5\n") == nil)
#expect(AgentGuide.installedVersion(of: "\nlanework-agent-guide v9\n") == nil)
}
@Test("CRLF and a missing final newline both parse")
func lineEndingsDoNotMatter() {
#expect(AgentGuide.installedVersion(of: "<!-- lanework-agent-guide v3 -->\r\nbody\r\n") == 3)
#expect(AgentGuide.installedVersion(of: "<!-- lanework-agent-guide v3 -->") == 3)
}
}
// MARK: - 2. The decision
@Suite("Agent guide ▸ the decision")
struct AgentGuideDecisionTests {
private func state(_ existing: AgentGuide.Existing, userFileFree: Bool = true) -> AgentGuide.State {
AgentGuide.State(existing: existing, userFilenameIsFree: userFileFree)
}
@Test("Missing writes; older rewrites")
func missingAndOlderWrite() {
#expect(AgentGuide.decide(state(.missing)) == .write)
#expect(AgentGuide.decide(state(.file(text: guideText(version: 1)))) == .write)
#expect(AgentGuide.decide(state(.file(text: guideText(version: 4)))) == .write)
}
/// "Never downgraded" a newer app version may have written it.
@Test("Current and newer are left alone")
func currentAndNewerAreLeftAlone() {
#expect(AgentGuide.decide(state(.file(text: guideText(version: 5)))) == .leaveAlone)
#expect(AgentGuide.decide(state(.file(text: guideText(version: 6)))) == .leaveAlone)
#expect(AgentGuide.decide(state(.file(text: AgentGuide.content))) == .leaveAlone)
}
@Test("A markerless file is displaced when the user name is free")
func markerlessIsDisplaced() {
#expect(AgentGuide.decide(state(.file(text: "# My own notes\n"))) == .displaceThenWrite)
// Undecodable bytes are markerless too the move preserves them either way.
#expect(AgentGuide.decide(state(.file(text: nil))) == .displaceThenWrite)
// A marker that is not on the first line is a user file, not an old guide.
#expect(AgentGuide.decide(state(.file(text: "# Notes\nlanework-agent-guide v4\n"))) == .displaceThenWrite)
}
/// "Otherwise the guide write is skipped with a log user content is never destroyed."
@Test("A taken CLAUDE.user.md cancels the write outright")
func takenUserFilenameSkips() {
#expect(AgentGuide.decide(state(.file(text: "# My own notes\n"), userFileFree: false)) == .skipUserFilenameTaken)
#expect(AgentGuide.decide(state(.file(text: nil), userFileFree: false)) == .skipUserFilenameTaken)
// It has no bearing on the version gate: an app-owned guide is still upgraded in place.
#expect(AgentGuide.decide(state(.file(text: guideText(version: 4)), userFileFree: false)) == .write)
#expect(AgentGuide.decide(state(.missing, userFileFree: false)) == .write)
}
@Test("A symlink or a folder is never touched, free name or not")
func untouchableIsSkipped() {
#expect(AgentGuide.decide(state(.untouchable)) == .skipUntouchable)
#expect(AgentGuide.decide(state(.untouchable, userFileFree: false)) == .skipUntouchable)
}
}
// MARK: - 3. On disk, through the store
@MainActor
@Suite("Agent guide ▸ on disk")
struct AgentGuideStoreTests {
@Test("A board with no CLAUDE.md gets the current guide")
func missingGuideIsWritten() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let store = try BoardStore(rootURL: fixture.root)
let brackets = GuideBracketLog()
brackets.attach(to: store)
store.refreshAgentGuide()
let written = try String(decoding: fixture.data(AgentGuide.filename), as: UTF8.self)
#expect(written.prefix { !$0.isNewline }.contains("lanework-agent-guide v5"))
#expect(written == AgentGuide.content)
#expect(!fixture.exists(AgentGuide.userFilename))
#expect(brackets.begins == 1, "one bracket — one app-mediated reload, one commit")
// A courtesy file the user never asked for has nothing to say to them.
#expect(store.banners.oneShots.isEmpty)
#expect(store.banners.losses.isEmpty)
// No temp-file residue from the atomic replace.
#expect(try fixture.entryNames("").contains(AgentGuide.filename))
#expect(try !fixture.entryNames("").contains { $0.hasPrefix(".\(AgentGuide.filename)") })
}
@Test("An older guide is rewritten to the current one")
func olderGuideIsUpgraded() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
try writeRoot(AgentGuide.filename, Data(guideText(version: 4).utf8), in: fixture)
let store = try BoardStore(rootURL: fixture.root)
store.refreshAgentGuide()
#expect(try fixture.data(AgentGuide.filename) == Data(AgentGuide.content.utf8))
// An upgrade is not a displacement: nothing was rescued, because nothing was the user's.
#expect(!fixture.exists(AgentGuide.userFilename))
}
/// "Left untouched when current or newer" and untouched means the file is not even opened for
/// writing, so its mtime (and, on git boards, the tree) is undisturbed.
@Test("A current guide is left byte-for-byte alone, mtime included")
func currentGuideIsNotRewritten() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
// Deliberately *not* the app's own text: a v5 marker is the whole gate, and a file carrying
// one must survive verbatim even when its body differs from what this version would write.
let url = try writeRoot(AgentGuide.filename, Data(guideText(version: 5).utf8), in: fixture)
let before = try stat(url)
let store = try BoardStore(rootURL: fixture.root)
let brackets = GuideBracketLog()
brackets.attach(to: store)
store.refreshAgentGuide()
let after = try stat(url)
#expect(after.bytes == before.bytes)
#expect(after.modified == before.modified)
#expect(brackets.begins == 0, "no write means no bracket and no commit")
}
@Test("A newer guide is never downgraded")
func newerGuideIsNotDowngraded() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let url = try writeRoot(AgentGuide.filename, Data(guideText(version: 99).utf8), in: fixture)
let before = try stat(url)
let store = try BoardStore(rootURL: fixture.root)
store.refreshAgentGuide()
let after = try stat(url)
#expect(after.bytes == before.bytes)
#expect(after.modified == before.modified)
}
@Test("A markerless CLAUDE.md moves to CLAUDE.user.md, byte for byte, and the guide takes its place")
func markerlessIsDisplaced() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let mine = "# Board rules\n\nAlways file bugs in the Triage lane.\n"
try writeRoot(AgentGuide.filename, Data(mine.utf8), in: fixture)
let store = try BoardStore(rootURL: fixture.root)
let brackets = GuideBracketLog()
brackets.attach(to: store)
store.refreshAgentGuide()
#expect(try fixture.data(AgentGuide.userFilename) == Data(mine.utf8))
#expect(try fixture.data(AgentGuide.filename) == Data(AgentGuide.content.utf8))
#expect(brackets.begins == 1, "the rescue and the write ride one bracket")
#expect(store.banners.oneShots.isEmpty)
}
/// The first-line rule, proved where it costs something: a user file quoting the marker is
/// rescued, not overwritten.
@Test("A marker below the first line is user content and is displaced")
func markerBelowTheFirstLineIsDisplaced() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let mine = "# Notes about Lanework\n\nThe app stamps `lanework-agent-guide v5` into CLAUDE.md.\n"
try writeRoot(AgentGuide.filename, Data(mine.utf8), in: fixture)
let store = try BoardStore(rootURL: fixture.root)
store.refreshAgentGuide()
#expect(try fixture.data(AgentGuide.userFilename) == Data(mine.utf8))
#expect(try fixture.data(AgentGuide.filename) == Data(AgentGuide.content.utf8))
}
@Test("A CLAUDE.md that is not UTF-8 is displaced with its bytes intact")
func undecodableIsDisplacedByteForByte() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let bytes = Data([0xFF, 0xFE, 0x00, 0x41, 0x80, 0x0A])
try writeRoot(AgentGuide.filename, bytes, in: fixture)
let store = try BoardStore(rootURL: fixture.root)
store.refreshAgentGuide()
#expect(try fixture.data(AgentGuide.userFilename) == bytes)
#expect(try fixture.data(AgentGuide.filename) == Data(AgentGuide.content.utf8))
}
/// "Otherwise the guide write is skipped with a log user content is never destroyed." Two
/// files the user owns, both still theirs afterwards, and no guide on this board at all.
@Test("A taken CLAUDE.user.md leaves both files alone and writes no guide")
func takenUserFilenameSkipsTheWrite() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let mine = "# Board rules\n"
let theirs = "# Older board rules\n"
let guide = try writeRoot(AgentGuide.filename, Data(mine.utf8), in: fixture)
let user = try writeRoot(AgentGuide.userFilename, Data(theirs.utf8), in: fixture)
let guideBefore = try stat(guide)
let userBefore = try stat(user)
let store = try BoardStore(rootURL: fixture.root)
let brackets = GuideBracketLog()
brackets.attach(to: store)
store.refreshAgentGuide()
#expect(try stat(guide).bytes == guideBefore.bytes)
#expect(try stat(guide).modified == guideBefore.modified)
#expect(try stat(user).bytes == userBefore.bytes)
#expect(try stat(user).modified == userBefore.modified)
#expect(brackets.begins == 0)
#expect(store.banners.oneShots.isEmpty, "a skip is a log line, not a banner")
}
/// Symlinks are never followed or touched anywhere in this app (01-storage-format.md § Fractal
/// layout Rules) including one wearing the guide's name.
@Test("A symlinked CLAUDE.md is left as a symlink, and its target is untouched")
func symlinkedGuideIsSkipped() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let target = try fixture.file("elsewhere.md", Data("# somewhere else\n".utf8))
try FileManager.default.createSymbolicLink(atPath: guideURL(in: fixture).path, withDestinationPath: "elsewhere.md")
let store = try BoardStore(rootURL: fixture.root)
store.refreshAgentGuide()
let destination = try FileManager.default.destinationOfSymbolicLink(atPath: guideURL(in: fixture).path)
#expect(destination == "elsewhere.md", "the link is still a link")
#expect(try Data(contentsOf: target) == Data("# somewhere else\n".utf8), "and it was not written through")
#expect(!fixture.exists(AgentGuide.userFilename))
}
/// The rescue name is checked with `lstat` semantics, so a **broken** symlink counts as taken:
/// `fileExists` would follow it, find nothing, call the name free and the move would then fail
/// into a banner about a file the user never asked for.
@Test("A dangling symlink on CLAUDE.user.md counts as taken")
func danglingRescueNameIsTaken() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
try writeRoot(AgentGuide.filename, Data("# mine\n".utf8), in: fixture)
try FileManager.default.createSymbolicLink(atPath: userFileURL(in: fixture).path, withDestinationPath: "nowhere.md")
let store = try BoardStore(rootURL: fixture.root)
store.refreshAgentGuide()
#expect(try fixture.data(AgentGuide.filename) == Data("# mine\n".utf8))
#expect(try FileManager.default.destinationOfSymbolicLink(atPath: userFileURL(in: fixture).path) == "nowhere.md")
#expect(store.banners.oneShots.isEmpty)
}
/// A regular file the app cannot *read* is markerless, not missing so it is displaced, never
/// overwritten. The move preserves it without ever needing to read it.
@Test("An unreadable CLAUDE.md is displaced, not clobbered")
func unreadableGuideIsDisplaced() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let url = try writeRoot(AgentGuide.filename, Data("# secret\n".utf8), in: fixture)
try FileManager.default.setAttributes([.posixPermissions: 0o000], ofItemAtPath: url.path)
let store = try BoardStore(rootURL: fixture.root)
store.refreshAgentGuide()
#expect(try fixture.data(AgentGuide.filename) == Data(AgentGuide.content.utf8))
try FileManager.default.setAttributes([.posixPermissions: 0o644], ofItemAtPath: userFileURL(in: fixture).path)
#expect(try fixture.data(AgentGuide.userFilename) == Data("# secret\n".utf8))
}
@Test("A folder named CLAUDE.md is left alone")
func directoryGuideIsSkipped() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
try fixture.file("\(AgentGuide.filename)/inside.txt", Data("inside".utf8))
let store = try BoardStore(rootURL: fixture.root)
store.refreshAgentGuide()
#expect(try fixture.data("\(AgentGuide.filename)/inside.txt") == Data("inside".utf8))
#expect(!fixture.exists(AgentGuide.userFilename))
}
/// 02-architecture.md § Write-failure surfacing: "The open-time agent-guide write is
/// skipped-with-log, the `CLAUDE.user.md`-taken precedent." A board on a read-only volume must
/// not spend a banner on a courtesy file.
@Test("An unwritable board root is skipped silently")
func unwritableRootIsSkipped() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let store = try BoardStore(rootURL: fixture.root)
let brackets = GuideBracketLog()
brackets.attach(to: store)
// Readable (so the board still loads and renders) but not writable.
try FileManager.default.setAttributes([.posixPermissions: 0o500], ofItemAtPath: fixture.root.path)
store.refreshAgentGuide()
#expect(!fixture.exists(AgentGuide.filename))
#expect(brackets.begins == 0)
#expect(store.banners.oneShots.isEmpty)
}
/// The read-only *lock* defers it as well the relocation's posture, and 02's.
@Test("A read-only-locked board defers, and writes the guide when the lock clears")
func lockedBoardDefers() async throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let store = try BoardStore(rootURL: fixture.root)
store.enterUnwritableLock()
store.refreshAgentGuide()
#expect(!fixture.exists(AgentGuide.filename))
// A reconciling reload re-probes writability, the lock clears and the same reload writes
// the guide it had been holding back.
store.handleWatcherEvent(.treeChanged(.reconciling))
await store.awaitQuiescence()
#expect(!store.isReadOnly)
#expect(try fixture.data(AgentGuide.filename) == Data(AgentGuide.content.utf8))
}
@Test("Refreshing twice writes once")
func secondRefreshIsANoOp() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let store = try BoardStore(rootURL: fixture.root)
let brackets = GuideBracketLog()
brackets.attach(to: store)
store.refreshAgentGuide()
let after = try stat(guideURL(in: fixture))
store.refreshAgentGuide()
#expect(try stat(guideURL(in: fixture)).modified == after.modified)
#expect(brackets.begins == 1)
}
/// The self-heal, stated where it is deterministic: every successful reload re-checks the guide,
/// so a foreign deletion or downgrade is repaired by the reload that noticed it.
@Test("A reload re-checks the guide — a deleted one comes back")
func aReloadHealsIt() async throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let store = try BoardStore(rootURL: fixture.root)
store.refreshAgentGuide()
try FileManager.default.removeItem(at: guideURL(in: fixture))
store.handleWatcherEvent(.treeChanged(.foreign))
await store.awaitQuiescence()
#expect(try fixture.data(AgentGuide.filename) == Data(AgentGuide.content.utf8))
}
/// The memo `refreshAgentGuide()` documents, from both sides: a picture this store has already
/// refused to act on is not acted on again by every reload that re-reads it, and a picture that
/// genuinely *changed* is a fresh attempt.
@Test("A skipped board stays skipped across reloads, and heals when the name frees up")
func aSkipIsNotRetriedUntilThePictureChanges() async throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
// A *folder* on the rescue name is exactly as taken as a file the app never descends into
// one, renames around it, or overwrites it.
try writeRoot(AgentGuide.filename, Data("# mine\n".utf8), in: fixture)
try fixture.file("\(AgentGuide.userFilename)/inside.txt", Data("inside".utf8))
let store = try BoardStore(rootURL: fixture.root)
let brackets = GuideBracketLog()
brackets.attach(to: store)
store.refreshAgentGuide()
for _ in 0 ..< 3 {
store.handleWatcherEvent(.treeChanged(.foreign))
await store.awaitQuiescence()
}
#expect(brackets.begins == 0, "no write was ever attempted")
#expect(store.banners.oneShots.isEmpty, "and no row was posted, once or four times")
#expect(try fixture.data(AgentGuide.filename) == Data("# mine\n".utf8))
#expect(try fixture.data("\(AgentGuide.userFilename)/inside.txt") == Data("inside".utf8))
// The name frees up: a different picture, so a fresh attempt and the rescue finally runs.
try FileManager.default.removeItem(at: userFileURL(in: fixture))
store.handleWatcherEvent(.treeChanged(.foreign))
await store.awaitQuiescence()
#expect(try fixture.data(AgentGuide.userFilename) == Data("# mine\n".utf8))
#expect(try fixture.data(AgentGuide.filename) == Data(AgentGuide.content.utf8))
#expect(brackets.begins == 1)
}
@Test("The guide is not a stray, and does not disturb the load")
func guideIsNotAStray() throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let store = try BoardStore(rootURL: fixture.root)
store.refreshAgentGuide()
try writeRoot(AgentGuide.userFilename, Data("# mine\n".utf8), in: fixture)
let result = try BoardLoader.load(boardRoot: fixture.root)
#expect(result.warnings.isEmpty, "both names are app-claimed, never stray-warned")
#expect(result.model.lanes.count == 1)
}
}
// MARK: - 4. Through the registry, with a real watcher
@MainActor
@Suite("Agent guide ▸ the registry")
struct AgentGuideRegistryTests {
/// The open-time firing, wired the way the app wires it after the watcher and the brackets
/// exist, so the write has a reload behind it.
@Test("Acquiring a board writes the guide")
func acquireWritesTheGuide() async throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let registry = BoardStoreRegistry()
let store = try registry.acquire(fixture.root)
defer { registry.release(store) }
await waitUntil { fixture.exists(AgentGuide.filename) }
#expect(try fixture.data(AgentGuide.filename) == Data(AgentGuide.content.utf8))
#expect(store.reloadFailure == nil)
}
/// Self-healing, over the real FSEvents path: nothing in this test hands the store an event.
@Test("A guide deleted under a live board comes back")
func foreignDeletionHeals() async throws {
let fixture = try makeBoard()
defer { fixture.tearDown() }
let registry = BoardStoreRegistry()
let store = try registry.acquire(fixture.root)
defer { registry.release(store) }
await waitUntil { fixture.exists(AgentGuide.filename) }
await settle()
try FileManager.default.removeItem(at: guideURL(in: fixture))
#expect(!fixture.exists(AgentGuide.filename))
await waitUntil { fixture.exists(AgentGuide.filename) }
#expect(try fixture.data(AgentGuide.filename) == Data(AgentGuide.content.utf8))
#expect(store.reloadFailure == nil)
}
}
@@ -23,9 +23,16 @@ import Testing
// MARK: - Shared fixtures
/// A one-lane, one-card board, ready for whatever the test wants to leave beside `index.md`.
///
/// It carries a **current agent guide**, which is what any board the app has opened once looks like
/// (08-agent-integration.md The agent guide). Without it the store's own guide refresh which
/// runs on every successful reload, beside this file's relocation would write a `CLAUDE.md` on
/// the first reload and open a bracket of its own, and the bracket counts below would stop being
/// claims about the relocation.
private func makeCardBoard() throws -> WriterFixture {
let fixture = try WriterFixture()
try fixture.item("", Item.board)
try fixture.file(AgentGuide.filename, Data(AgentGuide.content.utf8))
try fixture.item(Ident.lane1, Item.rich(order: "1024", title: "Todo"))
try fixture.item("\(Ident.lane1)/\(Ident.card1)", Item.rich(order: "1024", title: "Fix login"))
return fixture