test(ui): drive the simulator with a scripted flow and check every screen

tools/ui_flow.py clicks buttons and taps from the device files, waits for
DIAG shown lines and compares 10 screens per watch with goldens on four
test and three spot-check devices. Adds the fixture-wrap generator, UI
logic tests and driver tests; the launcher opens apps from their glance.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/test/storage/PinTest.mc b/test/storage/PinTest.mc
index 7dc677d..0212936 100644
--- a/test/storage/PinTest.mc
+++ b/test/storage/PinTest.mc
@@ -248,3 +248,16 @@ function pinKeyBuffersAreWiped(logger as Test.Logger) as Boolean {
     keys.wipe();
     return derived && wiped && StorageFixtures.allZero(keys.encKey) && StorageFixtures.allZero(keys.macKey);
 }
+
+// The UI-test fixture's wrap was computed in Python (tools/gen_fixture_wrap.py);
+// the app's unlock code must accept it with the fixture PIN and recover the
+// fixture master key, which cross-checks the wrap format.
+(:test)
+function pinOpensThePythonComputedFixtureWrap(logger as Test.Logger) as Boolean {
+    var store = new MemoryBackend();
+    store.setValue(KeyManager.WRAP_KEY, Bytes.fromHex(Fixtures.FIXTURE_WRAP));
+    var vault = new Vault(store, new FakeTime());
+    var wrongRejected = !StorageFixtures.unlock(vault, StorageFixtures.OTHER_PIN);
+    var opened = StorageFixtures.unlock(vault, Fixtures.FIXTURE_PIN);
+    return wrongRejected && opened && Bytes.equal(vault.session.masterKey(), Bytes.fromHex(Fixtures.FIXTURE_MASTER_KEY));
+}