chore: remove internal docs from repo, update public documentation

Remove docs/superpowers/, .claude/ config, and PRD.md from version
control (kept locally via .gitignore). Update README, CHANGELOG,
VitePress docs, and .env.example to reflect recent features: Files
page, teams, admin settings, persistent storage, and various API
improvements.

apps/web/src/components/layout/app-layout.tsx

@@ -44,7 +44,8 @@ export function AppLayout({ children, showToolPanel = true, onFiles }: AppLayout
       {isMobile && mobileSidebarOpen && (
         <>
           <div
-            className="fixed inset-0 z-40 bg-black/50 backdrop-blur-sm"
+            aria-hidden="true"
+            className="fixed inset-0 z-40 bg-black/50 backdrop-blur-sm cursor-default"
             onClick={() => setMobileSidebarOpen(false)}
           />
           <div className="fixed inset-y-0 left-0 z-50 w-64 bg-background border-r border-border shadow-xl animate-in slide-in-from-left">
@@ -61,25 +62,25 @@ export function AppLayout({ children, showToolPanel = true, onFiles }: AppLayout
                 </span>
               )}
               <button
+                type="button"
                 onClick={() => setMobileSidebarOpen(false)}
                 className="p-1.5 rounded-lg hover:bg-muted"
               >
                 <X className="h-4 w-4" />
               </button>
             </div>
-            <div onClick={() => setMobileSidebarOpen(false)}>
-              <Sidebar
-                onSettingsClick={() => {
-                  setMobileSidebarOpen(false);
-                  setSettingsOpen(true);
-                }}
-                onHelpClick={() => {
-                  setMobileSidebarOpen(false);
-                  setHelpOpen(true);
-                }}
-                expanded
-              />
-            </div>
+            <Sidebar
+              onSettingsClick={() => {
+                setMobileSidebarOpen(false);
+                setSettingsOpen(true);
+              }}
+              onHelpClick={() => {
+                setMobileSidebarOpen(false);
+                setHelpOpen(true);
+              }}
+              onNavClick={() => setMobileSidebarOpen(false)}
+              expanded
+            />
           </div>
         </>
       )}
@@ -88,6 +89,7 @@ export function AppLayout({ children, showToolPanel = true, onFiles }: AppLayout
       {isMobile && (
         <div className="fixed top-0 left-0 right-0 z-30 bg-background/95 backdrop-blur-sm border-b border-border px-3 py-2 flex items-center gap-3">
           <button
+            type="button"
             onClick={() => setMobileSidebarOpen(true)}
             className="p-1.5 rounded-lg hover:bg-muted"
           >
@@ -129,6 +131,7 @@ export function AppLayout({ children, showToolPanel = true, onFiles }: AppLayout
           <MobileNavItem icon={Workflow} label="Automate" href="/automate" />
           <MobileNavItem icon={FolderOpen} label="Files" href="/files" />
           <button
+            type="button"
             onClick={() => setSettingsOpen(true)}
             className="flex flex-col items-center gap-0.5 px-3 py-1 text-muted-foreground"
           >

apps/web/src/components/layout/footer.tsx

@@ -7,6 +7,7 @@ export function Footer() {
   return (
     <div className="fixed bottom-4 right-4 flex items-center gap-2 z-50">
       <button
+        type="button"
         onClick={toggleTheme}
         className="p-2 rounded-lg bg-card border border-border hover:bg-muted transition-colors"
         title="Toggle Theme"
@@ -14,6 +15,7 @@ export function Footer() {
         {resolvedTheme === "dark" ? <Sun className="h-4 w-4" /> : <Moon className="h-4 w-4" />}
       </button>
       <button
+        type="button"
         className="flex items-center gap-1.5 px-3 py-2 rounded-lg bg-card border border-border hover:bg-muted transition-colors text-sm"
         title="Language"
       >

apps/web/src/components/layout/sidebar.tsx

@@ -24,11 +24,18 @@ const bottomItems: SidebarItem[] = [
 interface SidebarProps {
   onSettingsClick: () => void;
   onHelpClick: () => void;
+  /** Called when a nav link is clicked (e.g., to close mobile sidebar). */
+  onNavClick?: () => void;
   /** When true, renders in expanded mode (for mobile overlay). */
   expanded?: boolean;
 }
 
-export function Sidebar({ onSettingsClick, onHelpClick, expanded = false }: SidebarProps) {
+export function Sidebar({
+  onSettingsClick,
+  onHelpClick,
+  onNavClick,
+  expanded = false,
+}: SidebarProps) {
   const location = useLocation();
 
   const renderItem = (item: SidebarItem, isActive: boolean) => {
@@ -60,20 +67,20 @@ export function Sidebar({ onSettingsClick, onHelpClick, expanded = false }: Side
 
     if (item.label === "Settings") {
       return (
-        <button key={item.label} onClick={onSettingsClick} className="w-full">
+        <button key={item.label} type="button" onClick={onSettingsClick} className="w-full">
           {content}
         </button>
       );
     }
     if (item.label === "Help") {
       return (
-        <button key={item.label} onClick={onHelpClick} className="w-full">
+        <button key={item.label} type="button" onClick={onHelpClick} className="w-full">
           {content}
         </button>
       );
     }
     return (
-      <Link key={item.label} to={item.href || "/"}>
+      <Link key={item.label} to={item.href || "/"} onClick={onNavClick}>
         {content}
       </Link>
     );