test(shots): seed demo flows so the flows page proves module logic both ways

hello.yaml needs debug.echo (not installed on the fixture hub) and
must carry the missing-module note; genehmigung-demo.yaml only uses
the hub builtin system.approval and must show a plain play button.

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

integration_test/guide_shots_test.dart

@@ -187,6 +187,42 @@ void main() {
       ]);
     }
 
+    // Seed two demo flows so the Flows page shows the real list
+    // instead of its empty state (and proves the missing-module
+    // logic both ways): hello needs debug.echo — not installed on
+    // the fixture hub, so it must carry the "1 module missing"
+    // note; the approval flow only uses the hub builtin
+    // system.approval and must show a plain play button.
+    final flowsDir = Directory(
+      '${Platform.environment['HOME']}/.chain/data/flows',
+    )..createSync(recursive: true);
+    File('${flowsDir.path}/hello.yaml').writeAsStringSync(
+      '# F∆I sample flow\n'
+      'inputs:\n'
+      '  name:\n'
+      '    type: string\n'
+      'steps:\n'
+      '  - id: echo\n'
+      '    use: debug.echo@^0\n'
+      '    with:\n'
+      '      text: "Hello, {{ inputs.name }}!"\n'
+      'outputs:\n'
+      '  greeting: "{{ steps.echo.text }}"\n',
+    );
+    File('${flowsDir.path}/genehmigung-demo.yaml').writeAsStringSync(
+      '# F∆I sample flow\n'
+      'inputs:\n'
+      '  antrag:\n'
+      '    type: string\n'
+      'steps:\n'
+      '  - id: freigabe\n'
+      '    use: system.approval@^0\n'
+      '    with:\n'
+      '      show: "{{ inputs.antrag }}"\n'
+      'outputs:\n'
+      '  entscheidung: "{{ steps.freigabe.decision }}"\n',
+    );
+
     // Hermetic prefs: never read or write the operator's real ones.
     SharedPreferences.setMockInitialValues({});