feat: user dropdown in Header with theme picker and logout

Replace static logout button with a dropdown triggered by clicking the
username badge. Dropdown shows accent color presets and a logout button.

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

apps/web/src/components/Header.tsx

@@ -1,15 +1,31 @@
-'use client'
+'use client'
 
 import Link from 'next/link'
 import { usePathname, useRouter } from 'next/navigation'
+import { useRef, useState, useEffect } from 'react'
 import { useAuthStore } from '@/store/authStore'
+import { useThemeStore, ACCENT_PRESETS } from '@/store/themeStore'
 
 export default function Header() {
   const { user, clearAuth } = useAuthStore()
+  const { accentIdx, setAccent } = useThemeStore()
   const router = useRouter()
   const pathname = usePathname()
+  const [open, setOpen] = useState(false)
+  const dropdownRef = useRef<HTMLDivElement>(null)
+
+  useEffect(() => {
+    const handler = (e: MouseEvent) => {
+      if (dropdownRef.current && !dropdownRef.current.contains(e.target as Node)) {
+        setOpen(false)
+      }
+    }
+    if (open) document.addEventListener('mousedown', handler)
+    return () => document.removeEventListener('mousedown', handler)
+  }, [open])
 
   const handleLogout = () => {
+    setOpen(false)
     clearAuth()
     router.push('/')
   }
@@ -68,25 +84,76 @@ export default function Header() {
                 <path d="M8 6h13M8 12h13M8 18h13M3 6h.01M3 12h.01M3 18h.01" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
               </svg>
             )}
-            <div className="flex items-center gap-2 bg-surface border border-white/[0.07] rounded-xl px-3 py-1.5">
-              <div className="w-5 h-5 rounded-md bg-accent/20 flex items-center justify-center shrink-0">
-                <span className="text-[10px] font-display font-extrabold text-accent">
-                  {user.username[0].toUpperCase()}
-                </span>
-              </div>
-              <span className="text-[12px] font-medium text-app-text hidden sm:block">{user.username}</span>
+
+            {/* User badge with dropdown */}
+            <div className="relative" ref={dropdownRef}>
               <button
-                onClick={handleLogout}
-                className="flex items-center gap-1 text-[11px] font-display font-semibold text-muted hover:text-[#ff6b6b] transition-colors duration-150 cursor-pointer ml-1 border-l border-white/[0.07] pl-2"
-                title="Выйти из аккаунта"
+                onClick={() => setOpen(v => !v)}
+                className="flex items-center gap-2 bg-surface border border-white/[0.07] rounded-xl px-3 py-1.5 cursor-pointer transition-colors duration-150 hover:border-white/[0.14]"
               >
-                <svg width="11" height="11" viewBox="0 0 24 24" fill="none">
-                  <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" />
-                  <polyline points="16,17 21,12 16,7" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" />
-                  <line x1="21" y1="12" x2="9" y2="12" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
+                <div className="w-5 h-5 rounded-md bg-accent/20 flex items-center justify-center shrink-0">
+                  <span className="text-[10px] font-display font-extrabold text-accent">
+                    {user.username[0].toUpperCase()}
+                  </span>
+                </div>
+                <span className="text-[12px] font-medium text-app-text hidden sm:block">{user.username}</span>
+                <svg
+                  width="10" height="10" viewBox="0 0 24 24" fill="none"
+                  className="text-muted transition-transform duration-200 ml-0.5"
+                  style={{ transform: open ? 'rotate(180deg)' : 'rotate(0deg)' }}
+                >
+                  <path d="M6 9l6 6 6-6" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" />
                 </svg>
-                <span className="hidden sm:inline">Выйти</span>
               </button>
+
+              {open && (
+                <div
+                  className="absolute right-0 top-full mt-1.5 w-52 bg-surface border border-white/[0.09] rounded-xl shadow-xl z-50 py-1 overflow-hidden"
+                  style={{ boxShadow: '0 8px 32px rgba(0,0,0,0.5)' }}
+                >
+                  {/* Theme section */}
+                  <div className="px-3 pt-2.5 pb-2">
+                    <p className="text-[10px] font-display font-semibold tracking-[1px] uppercase text-muted mb-2">
+                      Цвет темы
+                    </p>
+                    <div className="flex flex-wrap gap-1.5">
+                      {ACCENT_PRESETS.map((preset, i) => (
+                        <button
+                          key={i}
+                          onClick={() => setAccent(i)}
+                          title={preset.name}
+                          className="flex items-center gap-1.5 px-2 py-1 rounded-lg text-[11px] font-display font-semibold transition-all duration-150 cursor-pointer border"
+                          style={accentIdx === i
+                            ? { background: `rgba(${preset.rgb},0.15)`, color: preset.accent, borderColor: `${preset.accent}55` }
+                            : { background: 'transparent', color: '#555', borderColor: 'rgba(255,255,255,0.06)' }
+                          }
+                        >
+                          <span
+                            className="w-2.5 h-2.5 rounded-full shrink-0"
+                            style={{ background: preset.accent, boxShadow: accentIdx === i ? `0 0 5px ${preset.accent}90` : 'none' }}
+                          />
+                          {preset.name}
+                        </button>
+                      ))}
+                    </div>
+                  </div>
+
+                  <div className="border-t border-white/[0.07] mx-1 my-1" />
+
+                  {/* Logout */}
+                  <button
+                    onClick={handleLogout}
+                    className="w-full flex items-center gap-2.5 px-3 py-2 text-[13px] font-medium text-muted hover:text-[#ff6b6b] hover:bg-white/[0.04] transition-all duration-150 cursor-pointer"
+                  >
+                    <svg width="13" height="13" viewBox="0 0 24 24" fill="none">
+                      <path d="M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" />
+                      <polyline points="16,17 21,12 16,7" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" />
+                      <line x1="21" y1="12" x2="9" y2="12" stroke="currentColor" strokeWidth="2" strokeLinecap="round" />
+                    </svg>
+                    Выйти
+                  </button>
+                </div>
+              )}
             </div>
           </>
         ) : (