Build the end-to-end UI test pass

The golden-path XCUITest suite, adapted to current rulings where the
card body had gone stale: trash flows follow the materialized-trash
grammar (no Put Back, restore is drag or cut/paste out), git flows are
pro-m1 scope and skipped, and fixtures extend m11's in-container
--ui-test-fixture-board mechanism (the sandbox forbids the card's
--open-board path handoff) with exact-match variant flags: standard
(the three-lane audit board), large (8 lanes x 40 cards for
masonry/reflow), malformed (BoardWriter-built board with one card's
index.md overwritten to unterminated YAML, opened through the ORDINARY
path so the failure is the loader's own).

EndToEndFlowTests: create card/lane, inline rename, coordinate drag
across lanes, cut/paste, undo/redo of a move, delete-to-trash /
show-trash / restore-by-cut-paste / Empty Trash confirm - all asserting
on lane accessibility labels. FailFastLaunchTests: welcome appears, no
board window ever, a welcome row carries the loader's sentence naming
the file; byte-fidelity of the malformed board pinned unconditionally
in KanbanTests plus an identically-refused relaunch. Performance:
launch metric plus explicit wall-clock gates (30s launch / 5s Show
Trash on 320 cards) since XCTest baselines don't travel. Powerbox
panels (template save panel, Duplicate fallback, Open) are documented
as manual in EndToEndVerification.md, not faked.

The smoke test now launches on the standard fixture (it launched bare
before, opening the developer's real boards); README's everyday test
command scopes to -only-testing:KanbanTests.

Suite compiles on both schemes (build-for-testing verified); flows
await a real display + automation permission to execute - run
instructions in KanbanUITests/EndToEndVerification.md. +8 unit tests;
1669 green both schemes.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY

Kanban/App/RestoreBootstrapView.swift

@@ -100,20 +100,27 @@ struct RestoreBootstrapView: View {
         }
     }
 
-    /// The audit suite's board: built here, opened through the same `openBoard` every other path
-    /// uses, so it registers, bookmarks and titles itself exactly like a board the user opened.
+    /// The UI suites' board: built here, opened through the same `openBoard` every other path uses,
+    /// so it registers, bookmarks and titles itself exactly like a board the user opened.
     ///
-    /// **A failure lands on welcome as an ordinary launch failure**, with the fixture's own path on
-    /// it. That is deliberate: a suite whose fixture failed to build would otherwise audit an empty
-    /// screen and pass, which is the one outcome an accessibility gate must never produce.
+    /// **Which board is the launch arguments' to say** (`UITestLaunch.variant`), and this method does
+    /// not care: the malformed variant is built and opened exactly like the other two, and its
+    /// failure arrives one layer down as the *loader's* — a board window that records fail-fast's own
+    /// sentence and dismisses itself (`BoardWindowHost.start`). Special-casing it here would replace
+    /// the sentence under test with a sentence about the fixture.
+    ///
+    /// **A failure to *build* lands on welcome as an ordinary launch failure**, with the fixture's own
+    /// path on it. That is deliberate: a suite whose fixture failed to build would otherwise audit an
+    /// empty screen and pass, which is the one outcome an accessibility gate must never produce.
     private func openFixtureBoard() {
+        let variant = UITestLaunch.variant
         do {
-            let url = try UITestLaunch.materializeFixtureBoard()
+            let url = try UITestLaunch.materializeFixtureBoard(variant)
             appModel.openBoard(at: url)
         } catch {
             Self.logger.error("the UI-test fixture board could not be built: \(error.localizedDescription, privacy: .public)")
             appModel.recordLaunchFailure(
-                path: UITestLaunch.fixtureBoardURL.path,
+                path: UITestLaunch.fixtureBoardURL(for: variant).path,
                 message: "The UI-test fixture board could not be built: \(error.localizedDescription)"
             )
             appModel.showWelcome()