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diff --git a/source/app/Fixtures.mc b/source/app/Fixtures.mc
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+// Author:  cirakg & claude ai
+// Summary: Debug-only fake entries for the simulator and screenshots; release builds get empty stubs.
+//
+// All data is fabricated: the secrets are the RFC 4226/6238 test keys and the
+// names are made up. The UI-test build (source/util/TestMode.mc) wipes the
+// store and loads these at every start; debug builds offer "Load demo
+// entries" in the menu. FIXTURE_PIN is the PIN of the UI-test store.
+//
+// FIXTURE_WRAP is that PIN's wrap of FIXTURE_MASTER_KEY, precomputed by
+// tools/gen_fixture_wrap.py (fake salt, IV and key): deriving the PIN key on
+// the watch in one event trips the watchdog, so the fixture stores the
+// result. Unlocking it with the app's own code also cross-checks the wrap
+// format against the Python implementation (test/storage/PinTest.mc).
+
+import Toybox.Application;
+import Toybox.Lang;
+
+(:debug)
+module Fixtures {
+
+    const FIXTURE_PIN = "123456";
+    const FIXTURE_WRAP = "101112131415161718191a1b1c1d1e1f000007d001202122232425262728292a2b2c2d2e2f857b961d4854e06740f602627bfb952efaac5383e800768221bf3a7b292ee881e2ce2f76b9dd744b2ac32322473df351929bc6dfcbfc2941527ae8b90614a8a6a6bd0f72d33161bafd16b1039caa670c"; // lint: allow-literal (fake fixture)
+    const FIXTURE_MASTER_KEY = "404142434445464748494a4b4c4d4e4f505152535455565758595a5b5c5d5e5f"; // lint: allow-literal (fake fixture)
+
+    // Erase all app storage (UI-test build only).
+    function resetStore() as Void {
+        Application.Storage.clearValues();
+    }
+
+    // Add the demo entries. In the UI-test build this also sets FIXTURE_PIN
+    // so one entry can be locked; otherwise locked demo entries go to the
+    // pending queue until a PIN exists.
+    function load(vault as Vault) as Void {
+        if (TestMode.ON && !vault.hasPin()) {
+            Application.Storage.setValue(KeyManager.WRAP_KEY, Bytes.fromHex(FIXTURE_WRAP));
+            vault.session.unlock(Bytes.fromHex(FIXTURE_MASTER_KEY));
+        }
+        var rfcKey = "12345678901234567890"; // lint: allow-literal (RFC 4226 test key)
+        vault.add(otp("GitHub", "alice@example.com", "Work", Entry.OTP_TOTP, Hashes.SHA1, 6, 30, rfcKey, false));
+        vault.add(otp("Google", "bob@example.com", "Personal", Entry.OTP_TOTP, Hashes.SHA256, 8, 30,
+            "12345678901234567890123456789012", false)); // lint: allow-literal (RFC 6238 test key)
+        vault.add(otp("Bank", "carol", "Finance", Entry.OTP_TOTP, Hashes.SHA512, 6, 30,
+            "1234567890123456789012345678901234567890123456789012345678901234", true)); // lint: allow-literal (RFC 6238 test key)
+        vault.add(otp("VPN", "dave", "Work", Entry.OTP_HOTP, Hashes.SHA1, 6, 30, rfcKey, false));
+        vault.add(otp("Steam", "erin", "Games", Entry.OTP_STEAM, Hashes.SHA1, 5, 30, rfcKey, false));
+        vault.add(otp("Library", "frank", "Personal", Entry.OTP_TOTP, Hashes.SHA1, 7, 60, rfcKey, false));
+        var card = new Entry();
+        card.kind = Entry.KIND_CODE;
+        card.type = 0;
+        card.name = "Gym card";
+        card.group = "Personal";
+        card.payload = Bytes.fromUtf8("0000-1111-2222");
+        vault.add(card);
+        vault.lock();
+    }
+
+    function otp(name as String, account as String, group as String, type as Number, algorithm as Number,
+            digits as Number, period as Number, secret as String, locked as Boolean) as Entry {
+        var e = new Entry();
+        e.name = name;
+        e.account = account;
+        e.group = group;
+        e.type = type;
+        e.algorithm = algorithm;
+        e.digits = digits < Otp.MIN_DIGITS ? Otp.MIN_DIGITS : digits;
+        e.period = period;
+        e.secret = Bytes.fromUtf8(secret);
+        e.locked = locked;
+        e.counter = type == Entry.OTP_HOTP ? 5l : 0l;
+        e.created = 1700000000l;
+        return e;
+    }
+}
+
+(:release)
+module Fixtures {
+
+    function resetStore() as Void {
+    }
+
+    function load(vault as Vault) as Void {
+    }
+}