refactor: make sidebar a global component

src/components/refactored/shared/RootLayout.tsx

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+
+import { Outlet } from 'react-router-dom';
+import { Sidebar } from '@/components/refactored/sidebar/view/Sidebar';
+
+
+export function RootLayout() {
+  return (
+    <div className="flex h-screen w-full overflow-hidden bg-background">
+      <Sidebar />
+      <main className="relative flex-1 overflow-hidden">
+        <Outlet />
+      </main>
+    </div>
+  );
+}

src/components/refactored/sidebar/types/index.ts

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+export type SearchMode = 'projects' | 'conversations';

src/components/refactored/sidebar/view/Sidebar.tsx

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+import { useState } from 'react';
+import { PanelRightOpen } from 'lucide-react';
+import { Button } from '@/shared/view/ui';
+import { cn } from '@/lib/utils';
+import SidebarHeader from '@/components/refactored/sidebar/view/SidebarHeader.js';
+
+
+export function Sidebar() {
+  const [isCollapsed, setIsCollapsed] = useState(false);
+
+  return (
+    <>
+      {/* Mobile Backdrop Overlay - allows tapping outside to close */}
+      {!isCollapsed && (
+        <div 
+          className="fixed inset-0 z-40 bg-black/20 backdrop-blur-sm md:hidden" 
+          onClick={() => setIsCollapsed(true)} 
+        />
+      )}
+
+      <aside
+        className={cn(
+          "flex flex-col bg-background/80 backdrop-blur-sm transition-all duration-300 border-r border-border h-full",
+          "fixed inset-y-0 left-0 z-50 md:relative md:z-0", // Make it fixed drawer on mobile, relative on desktop
+          isCollapsed 
+            ? "-translate-x-full md:translate-x-0 md:w-0 md:opacity-0 md:overflow-hidden md:border-none" // Hide fully on mobile if collapsed
+            : "translate-x-0 w-[85vw] sm:w-80 md:w-72 opacity-100"
+        )}
+      >
+        <SidebarHeader 
+          isCollapsed={isCollapsed} 
+          onToggleCollapse={() => setIsCollapsed(true)} 
+        />
+        {/* Placeholder for the rest of the sidebar content */}
+        {!isCollapsed && (
+          <div className="flex-1 overflow-y-auto overscroll-contain">
+            {/* Future list component will go here */}
+          </div>
+        )}
+      </aside>
+      
+      {/* Collapsed view handle - Only show on desktop since mobile hides it completely behind a toggle usually, but let's keep it consistent or standard. 
+          Actually, on mobile, if it's completely hidden, we need a way to open it from the main content. For now we show the small bar if it's flex, 
+          but since we made it fixed, let's keep the small bar fixed too. */}
+      {isCollapsed && (
+        <aside className="fixed inset-y-0 left-0 z-40 flex h-full flex-col items-center border-r border-border bg-background/80 px-2 py-4 md:relative">
+           <Button
+              variant="ghost"
+              size="sm"
+              className="h-8 w-8 rounded-lg p-0 text-muted-foreground hover:bg-accent/80 hover:text-foreground"
+              onClick={() => setIsCollapsed(false)}
+              title="Show Sidebar"
+            >
+              <PanelRightOpen className="h-4 w-4" />
+            </Button>
+        </aside>
+      )}
+    </>
+  );
+}

src/components/refactored/sidebar/view/SidebarHeader.tsx

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+import { useState } from 'react';
+import { FolderPlus, Plus, RefreshCw, PanelLeftClose } from 'lucide-react';
+import type { SearchMode } from '../types';
+import { SidebarSearch } from './SidebarSearch';
+import { Button } from '@/shared/view/ui';
+import { cn } from '@/lib/utils';
+import { IS_PLATFORM } from '@/constants/config';
+
+type SidebarHeaderProps = {
+  isCollapsed: boolean;
+  onToggleCollapse: () => void;
+};
+
+export default function SidebarHeader({ isCollapsed, onToggleCollapse }: SidebarHeaderProps) {
+  // UI States declared here to avoid prop drilling as per instructions
+  const [searchMode, setSearchMode] = useState<SearchMode>('projects');
+  const [searchFilter, setSearchFilter] = useState('');
+  const [isRefreshing, setIsRefreshing] = useState(false);
+
+  const handleRefresh = () => {
+    setIsRefreshing(true);
+    setTimeout(() => setIsRefreshing(false), 1000);
+  };
+
+  const LogoBlock = () => (
+    <div className="flex min-w-0 items-center gap-2.5">
+      <div className="flex h-7 w-7 flex-shrink-0 items-center justify-center rounded-lg bg-primary/90 shadow-sm">
+        <svg className="h-3.5 w-3.5 text-primary-foreground" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2.2} strokeLinecap="round" strokeLinejoin="round">
+          <path d="M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z" />
+        </svg>
+      </div>
+      <h1 className="truncate text-sm font-semibold tracking-tight text-foreground">Claude Code UI</h1>
+    </div>
+  );
+
+  const LogoWithLink = () => {
+    if (IS_PLATFORM) {
+      return (
+        <a
+          href="https://cloudcli.ai/dashboard"
+          className="flex min-w-0 items-center gap-2.5 transition-opacity hover:opacity-80 active:opacity-70"
+          title="View Environments Dashboard"
+        >
+          <LogoBlock />
+        </a>
+      );
+    }
+    return <LogoBlock />;
+  };
+
+  if (isCollapsed) return null;
+
+  return (
+    <div className="flex-shrink-0">
+      {/* Desktop header */}
+      <div className="hidden px-3 pb-2 pt-3 md:block">
+        <div className="flex items-center justify-between gap-2">
+          <LogoWithLink />
+          <div className="flex flex-shrink-0 items-center gap-0.5">
+            <Button
+              variant="ghost"
+              size="sm"
+              className="h-7 w-7 rounded-lg p-0 text-muted-foreground hover:bg-accent/80 hover:text-foreground"
+              onClick={handleRefresh}
+              disabled={isRefreshing}
+              title="Refresh"
+            >
+              <RefreshCw className={cn("h-3.5 w-3.5", isRefreshing && "animate-spin")} />
+            </Button>
+            <Button
+              variant="ghost"
+              size="sm"
+              className="h-7 w-7 rounded-lg p-0 text-muted-foreground hover:bg-accent/80 hover:text-foreground"
+              title="New Project"
+            >
+              <Plus className="h-3.5 w-3.5" />
+            </Button>
+            <Button
+              variant="ghost"
+              size="sm"
+              className="h-7 w-7 rounded-lg p-0 text-muted-foreground hover:bg-accent/80 hover:text-foreground"
+              onClick={onToggleCollapse}
+              title="Hide Sidebar"
+            >
+              <PanelLeftClose className="h-3.5 w-3.5" />
+            </Button>
+          </div>
+        </div>
+
+        <SidebarSearch 
+          searchMode={searchMode}
+          onSearchModeChange={setSearchMode}
+          searchFilter={searchFilter}
+          onSearchFilterChange={setSearchFilter}
+        />
+      </div>
+
+      {/* Desktop divider */}
+      <div className="nav-divider hidden md:block" />
+
+      {/* Mobile header */}
+      <div className="p-3 pb-2 md:hidden">
+        <div className="flex items-center justify-between">
+          <LogoWithLink />
+          <div className="flex flex-shrink-0 gap-1.5">
+            <button
+              className="flex h-8 w-8 items-center justify-center rounded-lg bg-muted/50 transition-all active:scale-95"
+              onClick={handleRefresh}
+              disabled={isRefreshing}
+            >
+              <RefreshCw className={cn("h-4 w-4 text-muted-foreground", isRefreshing && "animate-spin")} />
+            </button>
+            <button
+              className="flex h-8 w-8 items-center justify-center rounded-lg bg-primary/90 text-primary-foreground transition-all active:scale-95"
+            >
+              <FolderPlus className="h-4 w-4" />
+            </button>
+          </div>
+        </div>
+
+        <SidebarSearch 
+          searchMode={searchMode}
+          onSearchModeChange={setSearchMode}
+          searchFilter={searchFilter}
+          onSearchFilterChange={setSearchFilter}
+        />
+      </div>
+
+      {/* Mobile divider */}
+      <div className="nav-divider md:hidden" />
+    </div>
+  );
+}

src/components/refactored/sidebar/view/SidebarSearch.tsx

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+import { Folder, MessageSquare, Search, X } from 'lucide-react';
+import { Input } from '@/shared/view/ui';
+import { cn } from '@/lib/utils';
+import { SearchMode } from '@/components/refactored/sidebar/types/index.js';
+
+
+type SidebarSearchProps = {
+  searchMode: SearchMode;
+  onSearchModeChange: (mode: SearchMode) => void;
+  searchFilter: string;
+  onSearchFilterChange: (filter: string) => void;
+};
+
+export function SidebarSearch({
+  searchMode,
+  onSearchModeChange,
+  searchFilter,
+  onSearchFilterChange
+}: SidebarSearchProps) {
+  return (
+    <div className="mt-2.5 space-y-2">
+      <div className="flex rounded-lg bg-muted/50 p-0.5">
+        <button
+          onClick={() => onSearchModeChange('projects')}
+          className={cn(
+            "flex-1 flex items-center justify-center gap-1.5 rounded-md px-2 py-1.5 text-xs font-medium transition-all",
+            searchMode === 'projects'
+              ? "bg-background shadow-sm text-foreground"
+              : "text-muted-foreground hover:text-foreground"
+          )}
+        >
+          <Folder className="h-3 w-3" />
+          Projects
+        </button>
+        <button
+          onClick={() => onSearchModeChange('conversations')}
+          className={cn(
+            "flex-1 flex items-center justify-center gap-1.5 rounded-md px-2 py-1.5 text-xs font-medium transition-all",
+            searchMode === 'conversations'
+              ? "bg-background shadow-sm text-foreground"
+              : "text-muted-foreground hover:text-foreground"
+          )}
+        >
+          <MessageSquare className="h-3 w-3" />
+          Conversations
+        </button>
+      </div>
+      
+      {/* Search bar */}
+      <div className="relative">
+        <Search className="pointer-events-none absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-muted-foreground/50 md:h-3.5 md:w-3.5" />
+        <Input
+          type="text"
+          placeholder={searchMode === 'conversations' ? "Search conversations..." : "Search projects..."}
+          value={searchFilter}
+          onChange={(event) => onSearchFilterChange(event.target.value)}
+          className="nav-search-input h-10 rounded-xl border-0 pl-10 pr-9 text-sm transition-all duration-200 placeholder:text-muted-foreground/40 focus-visible:ring-0 focus-visible:ring-offset-0 md:h-9 md:pl-9 md:pr-8"
+        />
+        {searchFilter && (
+          <button
+            onClick={() => onSearchFilterChange('')}
+            className="absolute right-2.5 top-1/2 -translate-y-1/2 rounded-md p-1 hover:bg-accent md:p-0.5"
+          >
+            <X className="h-3.5 w-3.5 text-muted-foreground md:h-3 md:w-3" />
+          </button>
+        )}
+      </div>
+    </div>
+  );
+}