Fix UI padding and text flush against container edges

- Remove global * { padding: 0 } reset that was overriding all Tailwind
  padding classes (unlayered CSS beats Tailwind v4 @layer utilities)
- Add color-scheme: dark to fix native form controls (select dropdowns)
  rendering with white backgrounds
- Make sidebar responsive (25% width, min 224px, max 320px)
- Increase internal padding on TopBar, Sidebar, ProjectList, StatusBar
- Add flex-shrink-0 to TopBar status indicators to prevent clipping
- Allow project action buttons to wrap on narrow sidebars
- Increase terminal view padding for breathing room

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/src/components/layout/Sidebar.tsx

@@ -6,7 +6,7 @@ export default function Sidebar() {
   const { sidebarView, setSidebarView } = useAppState();
 
   return (
-    <div className="flex flex-col h-full w-64 bg-[var(--bg-secondary)] border border-[var(--border-color)] rounded-lg overflow-hidden">
+    <div className="flex flex-col h-full w-[25%] min-w-56 max-w-80 bg-[var(--bg-secondary)] border border-[var(--border-color)] rounded-lg overflow-hidden">
       {/* Nav tabs */}
       <div className="flex border-b border-[var(--border-color)]">
         <button
@@ -32,7 +32,7 @@ export default function Sidebar() {
       </div>
 
       {/* Content */}
-      <div className="flex-1 overflow-y-auto">
+      <div className="flex-1 overflow-y-auto p-1">
         {sidebarView === "projects" ? <ProjectList /> : <SettingsPanel />}
       </div>
     </div>