Fix avatar menu's missing border and put the tab title beside search

- The avatar menu card's border was going missing wherever an opaque
  row sat against it (every corner but the header's) - a Container
  combining `border` with its own `clipBehavior` paints the border as
  part of the outer decoration, then the clipped child on top right up
  to the same boundary, with no gap for the border's stroke to show
  through. Fixed with the standard pattern: no clipBehavior on the
  bordered Container, a 1px-inset ClipRRect around the filled, clipped
  content instead.
- NooTopBar.androidTitleTrailing (renamed from androidTitleReplacement)
  now sits beside the tab title instead of replacing it - the title
  keeps its natural width (Flexible, ellipsizing only if truly out of
  room) with the inline search bar taking the remaining space to its
  right, rather than the title disappearing whenever search moves into
  the top bar.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

lib/widgets/noo/nav/noo_top_bar.dart

@@ -56,14 +56,15 @@ class NooTopBar extends StatelessWidget implements PreferredSizeWidget {
   /// iOS only: the search field shown below the large title.
   final Widget? search;
 
-  /// Android only: replaces the plain title text with an arbitrary widget
-  /// (e.g. a search-field-styled launcher) in that same flexible middle
-  /// slot, between [leading]/the menu button and [actions]. iOS already
-  /// has a dedicated [search] slot below its large title for this; Android
-  /// has no large title to put a second row under, so a caller that wants
-  /// an inline search bar there replaces the title with one instead of
-  /// adding a row.
-  final Widget? androidTitleReplacement;
+  /// Android only: an extra widget (e.g. a search-field-styled launcher) in
+  /// the flexible middle slot, to the title's own right - [title] keeps
+  /// its natural (shrink-to-fit, ellipsized) width on the left, and this
+  /// takes whatever space is left rather than replacing it. iOS already has
+  /// a dedicated [search] slot below its large title for this; Android has
+  /// no large title to put a second row under, so a caller that wants an
+  /// inline search bar there puts it beside the title instead of adding a
+  /// row.
+  final Widget? androidTitleTrailing;
 
   /// Defaults to `bg` - the top bar sits on the screen background.
   final Color? backgroundColor;
@@ -76,7 +77,7 @@ class NooTopBar extends StatelessWidget implements PreferredSizeWidget {
     this.onMenu,
     this.actions = const [],
     this.search,
-    this.androidTitleReplacement,
+    this.androidTitleTrailing,
     this.backgroundColor,
   });
 
@@ -188,16 +189,31 @@ class NooTopBar extends StatelessWidget implements PreferredSizeWidget {
           spacing: 4,
           children: [
             ?lead,
-            Expanded(
-              child:
-                  androidTitleReplacement ??
-                  Text(
-                    title,
-                    maxLines: 1,
-                    overflow: TextOverflow.ellipsis,
-                    style: NooText.title.copyWith(height: 1, color: colors.fg1),
-                  ),
-            ),
+            // [androidTitleTrailing]'s own doc comment explains why this
+            // isn't a straight replacement: the title keeps its natural
+            // width (`Flexible`, not `Expanded` - it still shrinks/
+            // ellipsizes if there's truly no room, but doesn't force the
+            // row that wide otherwise) and sits to the trailing content's
+            // left rather than being displaced by it.
+            if (androidTitleTrailing != null) ...[
+              Flexible(
+                child: Text(
+                  title,
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  style: NooText.title.copyWith(height: 1, color: colors.fg1),
+                ),
+              ),
+              Expanded(child: androidTitleTrailing!),
+            ] else
+              Expanded(
+                child: Text(
+                  title,
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  style: NooText.title.copyWith(height: 1, color: colors.fg1),
+                ),
+              ),
             ...actions,
           ],
         ),