Polish UI: enhance dialogs, command palette, and page layouts

Expand NewIssueDialog with richer form fields. Add NewProjectDialog.
Enhance CommandPalette with more actions and search. Improve
CompanySwitcher, EmptyState, and IssueProperties. Flesh out Activity,
Companies, Dashboard, and Inbox pages with real content and layouts.
Refine sidebar, routing, and dialog context. CSS tweaks for dark theme.

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

ui/src/components/Layout.tsx

@@ -5,6 +5,7 @@ import { BreadcrumbBar } from "./BreadcrumbBar";
 import { PropertiesPanel } from "./PropertiesPanel";
 import { CommandPalette } from "./CommandPalette";
 import { NewIssueDialog } from "./NewIssueDialog";
+import { NewProjectDialog } from "./NewProjectDialog";
 import { useDialog } from "../context/DialogContext";
 import { usePanel } from "../context/PanelContext";
 import { useKeyboardShortcuts } from "../hooks/useKeyboardShortcuts";
@@ -27,18 +28,18 @@ export function Layout() {
   });
 
   return (
-    <div className="flex h-screen bg-background text-foreground">
+    <div className="flex h-screen bg-background text-foreground overflow-hidden">
       <div
         className={cn(
-          "transition-all duration-200 ease-in-out shrink-0 overflow-hidden",
+          "transition-all duration-200 ease-in-out shrink-0 h-full overflow-hidden",
           sidebarOpen ? "w-60" : "w-0"
         )}
       >
         <Sidebar />
       </div>
-      <div className="flex-1 flex flex-col overflow-hidden">
+      <div className="flex-1 flex flex-col min-w-0 h-full">
         <BreadcrumbBar />
-        <div className="flex flex-1 overflow-hidden">
+        <div className="flex flex-1 min-h-0">
           <main className="flex-1 overflow-auto p-6">
             <Outlet />
           </main>
@@ -47,6 +48,7 @@ export function Layout() {
       </div>
       <CommandPalette />
       <NewIssueDialog />
+      <NewProjectDialog />
     </div>
   );
 }