workout_app: same 30/25 duration bar as the locker

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

stronglift_replacement/workout_app/lib/models/manual_workout.dart

@@ -31,22 +31,22 @@ const int kManualWorkoutBudgetPer7Days = 2;
 /// Max manual workouts allowed in any rolling 30-day window.
 const int kManualWorkoutBudgetPer30Days = 10;
 
-/// The ONE duration bar every workout type answers to, in minutes. This is
+/// The ONE duration bar every activity answers to, in minutes. This is
 /// the ADVERTISED number — the only one that may appear in a message the user
 /// reads. Mirrors `MIN_WORKOUT_DURATION_MINUTES` in the locker's
 /// `_constants.py`; the two must move together.
-const int kMinWorkoutDurationMinutes = 40;
+const int kMinWorkoutDurationMinutes = 30;
 
 /// The leeway that is deliberately INVISIBLE. A session is accepted at
-/// [kMinWorkoutDurationMinutes] minus this, so 35 minutes passes while every
-/// string still says 40. That gap is intentional: do NOT "fix" it by
+/// [kMinWorkoutDurationMinutes] minus this, so 25 minutes passes while every
+/// string still says 30. That gap is intentional: do NOT "fix" it by
 /// advertising the real cutoff, and never interpolate
 /// [kWorkoutDurationAcceptMinutes] into a user-facing string.
 const int kWorkoutDurationLeewayMinutes = 5;
 
 /// Derived so the advertised and accept bars cannot drift apart. Comparisons
 /// use this; messages use [kMinWorkoutDurationMinutes]. Compare with `>=`,
-/// matching the locker, so 35.0 cannot pass one side and fail the other.
+/// matching the locker, so 25.0 cannot pass one side and fail the other.
 const int kWorkoutDurationAcceptMinutes =
     kMinWorkoutDurationMinutes - kWorkoutDurationLeewayMinutes;
 
@@ -185,7 +185,6 @@ class ManualWorkoutDraft {
   final String equipment;
 }
 
-
 /// Builds the persisted `workout_data` dict for a validated draft.
 ///
 /// Byte-for-byte equivalent of the Python `build_entry`.

stronglift_replacement/workout_app/test/models/duration_threshold_fixture_test.dart

@@ -89,10 +89,13 @@ void main() {
     }
   });
 
-  test('the rejection message advertises 40 and never the real cutoff', () {
-    final error = validateManualWorkout(_draft(10));
-    expect(error, isNotNull);
-    expect(error, contains('$kMinWorkoutDurationMinutes'));
-    expect(error, isNot(contains('$kWorkoutDurationAcceptMinutes')));
-  });
+  test(
+    'the rejection message advertises the round bar and never the real cutoff',
+    () {
+      final error = validateManualWorkout(_draft(10));
+      expect(error, isNotNull);
+      expect(error, contains('$kMinWorkoutDurationMinutes'));
+      expect(error, isNot(contains('$kWorkoutDurationAcceptMinutes')));
+    },
+  );
 }