production

test/app_bar_glass_test.dart

@@ -57,7 +57,21 @@ void main() {
     // One ground now, and everything on it inverts. The wash survives as
     // `milerGlassSurface()` for the sheets, which sit over content and still
     // want it.
-    testWidgets('is solid brand, so every tab shares one chrome', (
+    // ── The wash gave way to the brand, and the brand grew a gradient ──
+    //
+    // The four tabs wore a 7% frosted brand wash flattened against white while
+    // Home wore solid brand, so switching tab changed the colour of the top
+    // 76pt of the phone AND the colour of the status-bar glyphs — which reads
+    // as arriving in a different app rather than a different page.
+    //
+    // One ground now. It is [kBrandGradient] rather than a flat fill: two stops
+    // about eight per cent apart, enough that the bar reads as a surface with
+    // light on it and not enough to be seen as a gradient. A colour cannot be a
+    // gradient, so it rides as `flexibleSpace` — and the fill underneath stays
+    // the brand red, so a bar that fails to paint its surface comes out the
+    // right colour rather than transparent. Both halves are asserted, because
+    // it is the pair that makes the fallback safe.
+    testWidgets('is one brand ground, so every tab shares one chrome', (
       tester,
     ) async {
       await pump(
@@ -66,12 +80,23 @@ void main() {
       );
 
       final bar = tester.widget<AppBar>(find.byType(AppBar));
-      expect(bar.backgroundColor, ColorConstants.primary);
-      expect(
-        bar.flexibleSpace,
-        isNull,
-        reason: 'a solid ground needs no surface layered over it',
-      );
+      // ── The fill is transparent, and the surface paints ──
+      //
+      // It was the brand as a safety net behind [kBrandGradient]. It cannot be
+      // one now: the bar's bottom corners are rounded so the page shows through
+      // them (see [milerBrandSurface]), and an opaque rectangle behind a
+      // rounded surface fills in exactly the two corners the curve exists to
+      // open. What must hold is that the bar still *renders* the brand, which
+      // is the gradient assertion below.
+      expect(bar.backgroundColor, Colors.transparent);
+      expect(bar.flexibleSpace, isNotNull);
+
+      final painted = tester
+          .widgetList<DecoratedBox>(find.byType(DecoratedBox))
+          .map((d) => d.decoration)
+          .whereType<BoxDecoration>()
+          .where((d) => d.gradient == kBrandGradient);
+      expect(painted, isNotEmpty, reason: 'the bar does not wear the brand');
     });
 
     testWidgets('inverts everything drawn on it', (tester) async {
@@ -106,9 +131,10 @@ void main() {
         const Scaffold(appBar: MilerAppBar(title: 'Activity')),
       );
 
-      // The wash is a surface, and a surface against an untinted page is
-      // already an edge. A hairline under it drew that boundary a second time —
-      // the same doubled-up border this app has been pulling out of its cards.
+      // The brand ground is a surface, and a surface against an untinted page
+      // is already an edge. A hairline under it drew that boundary a second
+      // time — the same doubled-up border this app has been pulling out of its
+      // cards.
       final bar = tester.widget<AppBar>(find.byType(AppBar));
       expect(bar.bottom, isNull);
     });
@@ -140,25 +166,17 @@ void main() {
       );
 
       final bar = tester.widget<AppBar>(find.byType(AppBar));
-      expect(bar.backgroundColor, ColorConstants.primary);
-      expect(bar.flexibleSpace, isNull);
+      // ── The fill is transparent, and the surface paints ──
+      //
+      // It was the brand as a safety net behind [kBrandGradient]. It cannot be
+      // one now: the bar's bottom corners are rounded so the page shows through
+      // them (see [milerBrandSurface]), and an opaque rectangle behind a
+      // rounded surface fills in exactly the two corners the curve exists to
+      // open. What must hold is that the bar still *renders* the brand, which
+      // is the gradient assertion below.
+      expect(bar.backgroundColor, Colors.transparent);
+      expect(bar.flexibleSpace, isNotNull);
       expect(bar.bottom, isNull, reason: 'no rule under the bar here either');
     });
   });
-
-  // The wash survives as `milerGlassSurface()`, which the SHEETS use — they sit
-  // over scrolling content and genuinely want a translucent surface, where a
-  // bar sits over nothing and does not. This still pins what the wash has to
-  // be, wherever it is used.
-  test('the wash is a brand tint light enough to carry near-black type', () {
-    // Flattened against white, which is what the sheets composite it over.
-    final flat = Color.alphaBlend(ColorConstants.glassRed, Colors.white);
-    expect(
-      flat.computeLuminance(),
-      greaterThan(0.85),
-      reason:
-          'a saturated red surface would force white text onto a mid-tone '
-          'red, the weakest contrast pairing in the palette',
-    );
-  });
 }