Merge branch 'learn-fb' into integration

packages/halkyon_app/test/assistant/widget/assistant_grants_screen_test.dart

@@ -144,6 +144,37 @@ void main() {
     await show(tester);
     await tap(tester, find.text('Grant assistants'));
     expect(tester.widget<FilledButton>(saveButton()).onPressed, isNull);
+    // What a grant does and how its budget counts, behind the question
+    // marks beside People and Budget (decided 3 Nov 2026).
+    final note = find.textContaining('They agree once');
+    final counts = find.textContaining('Empty for none.');
+    expect(note, findsNothing);
+    expect(counts, findsNothing);
+    await tap(
+      tester,
+      find.descendant(
+        of: find.widgetWithText(ExplainedTitle, 'People'),
+        matching: find.byType(HelpButton),
+      ),
+    );
+    expect(note, findsOneWidget);
+    await tap(tester, find.text('OK'));
+    await tester.ensureVisible(
+      find.widgetWithText(ExplainedTitle, 'Budget, for all of them together'),
+    );
+    await tester.pumpAndSettle();
+    await tap(
+      tester,
+      find.descendant(
+        of: find.widgetWithText(
+          ExplainedTitle,
+          'Budget, for all of them together',
+        ),
+        matching: find.byType(HelpButton),
+      ),
+    );
+    expect(counts, findsOneWidget);
+    await tap(tester, find.text('OK'));
 
     await addPerson(tester, 'anna');
     await addPerson(tester, 'ben');

packages/halkyon_app/test/assistant/widget/assistants_card_test.dart

@@ -406,14 +406,16 @@ void main() {
       ),
     );
     await show(tester);
-
-    expect(
-      find.text(
+    const why =
         "Whoever runs test.example.org doesn't allow own keys here, so the "
-        "app doesn't ask these.",
-      ),
-      findsOneWidget,
-    );
+        "app doesn't ask these.";
+
+    expect(find.text(why), findsNothing, reason: 'behind its question mark');
+    await tester.tap(find.byType(HelpButton));
+    await tester.pumpAndSettle();
+    expect(find.text(why), findsOneWidget);
+    await tester.tap(find.text('OK'));
+    await tester.pumpAndSettle();
     expect(find.text('Add an assistant with your own key'), findsNothing);
   });
 

packages/halkyon_app/test/password/widget/password_sheets_test.dart

@@ -3,6 +3,7 @@ import 'dart:convert';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:halkyon_app/halkyon_app.dart';
 import 'package:halkyon_app/testing.dart';
+import 'package:halkyon_ui/halkyon_ui.dart';
 import 'package:material_ui/material_ui.dart';
 
 /// A signed-in person's app as a test makes one: whose it is.
@@ -592,6 +593,20 @@ void main() {
 
       expect(find.text('Set up a password'), findsOneWidget);
       expect(find.text('Change password'), findsNothing);
+
+      // What it is, behind its question mark (decided 3 Nov 2026).
+      const what =
+          'Sign in with your email address, a password and an '
+          'authenticator app.';
+      expect(find.text(what), findsNothing);
+      await tester.tap(
+        find.descendant(
+          of: find.widgetWithText(ExplainedTitle, 'Set up a password'),
+          matching: find.byType(HelpButton),
+        ),
+      );
+      await tester.pumpAndSettle();
+      expect(find.text(what), findsOneWidget);
     });
 
     testWidgets('offers none to one without an address: a code mailed to '

packages/halkyon_app/test/simplelogin/widget/simplelogin_section_test.dart

@@ -1,6 +1,7 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:halkyon_app/halkyon_app.dart';
 import 'package:halkyon_app/testing.dart';
+import 'package:halkyon_ui/halkyon_ui.dart';
 import 'package:material_ui/material_ui.dart';
 
 const password = 'correct horse battery';
@@ -46,10 +47,11 @@ void main() {
 
     expect(find.text('SimpleLogin'), findsOneWidget);
     expect(find.widgetWithText(ListTile, 'Add SimpleLogin'), findsOneWidget);
-    expect(
-      find.text('Sign in with SimpleLogin, or with your Proton account.'),
-      findsOneWidget,
-    );
+    const hint = 'Sign in with SimpleLogin, or with your Proton account.';
+    expect(find.text(hint), findsNothing, reason: 'behind its question mark');
+    await tester.tap(find.byType(HelpButton));
+    await tester.pumpAndSettle();
+    expect(find.text(hint), findsOneWidget);
   });
 
   testWidgets('nothing where the instance offers no SimpleLogin', (