fix bottom strip: icon sizing, rail padding, status alignment

Phosphor icons: reduced font size from 0.88 to 0.75 in unit space
and center-aligned paragraph to prevent horizontal stretching.
Icon rail: removed top border, tightened padding (10h/4v from
12h/6v), reduced icon size to 14px to fit the 26px strip. Status
bar: added horizontal padding and vertical center alignment.
Bottom strip row: added top border, crossAxisAlignment.stretch
so all three sections fill the height uniformly. Default app font
bumped from 14 to 15px.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/lib/app.dart

@@ -70,7 +70,7 @@ class _RootShellState extends State<_RootShell> {
     return DefaultTextStyle(
       style: TextStyle(
         color: tokens.globalForeground,
-        fontSize: 14,
+        fontSize: 15,
         fontWeight: clideUiDefaultWeight,
         fontFamily: clideUiFamily,
         fontFamilyFallback: clideUiFamilyFallback,
@@ -171,9 +171,11 @@ class RootLayout extends StatelessWidget {
               ),
             ),
             if (statusVisible)
-              SizedBox(
+              Container(
                 height: statusHeight,
+                decoration: BoxDecoration(border: Border(top: BorderSide(color: ClideTheme.of(ctx).surface.dividerColor))),
                 child: Row(
+                  crossAxisAlignment: CrossAxisAlignment.stretch,
                   children: [
                     if (sidebarVisible && !sidebarCollapsed)
                       SizedBox(width: sidebarSize, child: _BottomRail(slot: Slots.sidebar))
@@ -487,7 +489,10 @@ class StatusbarHost extends StatelessWidget {
         final right = items.where((i) => i.priority >= 100).toList();
         return Container(
           color: tokens.statusBarBackground,
+          padding: const EdgeInsets.symmetric(horizontal: 8),
+          alignment: Alignment.center,
           child: Row(
+            crossAxisAlignment: CrossAxisAlignment.center,
             children: [
               for (final item in left) item.build(ctx),
               const Spacer(),

app/lib/widgets/src/clide_icon_rail.dart

@@ -39,11 +39,8 @@ class _ClideIconRailState extends State<ClideIconRail> {
     final tokens = ClideTheme.of(context).surface;
     return MouseRegion(
       onExit: (_) => setState(() => _hoveredId = null),
-      child: Container(
+      child: SizedBox(
         width: double.infinity,
-        decoration: BoxDecoration(
-          border: Border(top: BorderSide(color: tokens.dividerColor)),
-        ),
         child: Row(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
@@ -98,7 +95,7 @@ class _RailButton extends StatelessWidget {
           child: GestureDetector(
             onTap: onTap,
             child: Container(
-              padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
+              padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
               decoration: BoxDecoration(
                 border: Border(
                   bottom: BorderSide(
@@ -109,7 +106,7 @@ class _RailButton extends StatelessWidget {
                   ),
                 ),
               ),
-              child: ClideIcon(item.icon, size: 16, color: color),
+              child: ClideIcon(item.icon, size: 14, color: color),
             ),
           ),
         ),

app/lib/widgets/src/icons/phosphor.dart

@@ -10,13 +10,14 @@ class PhosphorIconPainter extends ClideIconPainter {
 
   @override
   void paint(ui.Canvas canvas, ui.Color color) {
-    final builder = ui.ParagraphBuilder(ui.ParagraphStyle(fontFamily: family, fontSize: 0.88, height: 1.0))
+    final builder = ui.ParagraphBuilder(
+      ui.ParagraphStyle(fontFamily: family, fontSize: 0.75, height: 1.0, textAlign: ui.TextAlign.center),
+    )
       ..pushStyle(ui.TextStyle(color: color, fontFamily: family))
       ..addText(String.fromCharCode(codePoint));
     final paragraph = builder.build()..layout(const ui.ParagraphConstraints(width: 1.0));
-    final dx = (1.0 - paragraph.maxIntrinsicWidth) / 2;
     final dy = (1.0 - paragraph.height) / 2;
-    canvas.drawParagraph(paragraph, ui.Offset(dx, dy));
+    canvas.drawParagraph(paragraph, ui.Offset(0, dy));
   }
 
   @override