fix: tema kaydetme race condition düzeltildi

Önceki hata: ThemeTab her iki setter'ı da çağırıyordu (setSelectedTheme +
setSelectedTweakcnTheme). Bunlar wrapper'a bağlıydı, her wrapper kendi
saveThemePrefsAction'ını çağırıyordu. İkinci çağrı colorTheme:'' yazarak
birincinin kaydını siliyordu.

Düzeltme:
- ThemeTab'a RAW React state setter'ları iletildi (wrapper değil)
- ThemeTab'ın cross-clear mantığı olduğu gibi kaldı
- Appwrite kaydı useEffect'e taşındı: React 18 olay yöneticisindeki
  tüm state güncellemelerini batch'ledikten SONRA tek seferde tetiklenir
  → selectedTheme ve selectedTweakcnTheme doğru nihai değerleriyle kaydedilir

src/components/theme-customizer/index.tsx

@@ -35,17 +35,29 @@ export function ThemeCustomizer({ open, onOpenChange, initialPrefs }: ThemeCusto
   const [importModalOpen, setImportModalOpen] = React.useState(false)
   const [importedTheme, setImportedTheme] = React.useState<ImportedTheme | null>(null)
 
-  // Save dark/light mode to Appwrite when it changes (skip first mount)
-  const themeMountRef = React.useRef(false)
+  // --- Appwrite persistence via useEffect (fires ONCE after React batches state updates) ---
+
+  const darkModeSaveMountRef = React.useRef(false)
   React.useEffect(() => {
-    if (!themeMountRef.current) { themeMountRef.current = true; return }
+    if (!darkModeSaveMountRef.current) { darkModeSaveMountRef.current = true; return }
     void saveThemePrefsAction({ theme })
   }, [theme])
 
-  // Save sidebar config to Appwrite when it changes (skip first mount)
-  const sidebarMountRef = React.useRef(false)
+  const colorThemeSaveMountRef = React.useRef(false)
   React.useEffect(() => {
-    if (!sidebarMountRef.current) { sidebarMountRef.current = true; return }
+    if (!colorThemeSaveMountRef.current) { colorThemeSaveMountRef.current = true; return }
+    void saveThemePrefsAction({ colorTheme: selectedTheme, tweakcnTheme: selectedTweakcnTheme })
+  }, [selectedTheme, selectedTweakcnTheme])
+
+  const radiusSaveMountRef = React.useRef(false)
+  React.useEffect(() => {
+    if (!radiusSaveMountRef.current) { radiusSaveMountRef.current = true; return }
+    void saveThemePrefsAction({ radius: selectedRadius })
+  }, [selectedRadius])
+
+  const sidebarSaveMountRef = React.useRef(false)
+  React.useEffect(() => {
+    if (!sidebarSaveMountRef.current) { sidebarSaveMountRef.current = true; return }
     void saveThemePrefsAction({
       sidebarVariant: sidebarConfig.variant,
       sidebarCollapsible: sidebarConfig.collapsible,
@@ -53,6 +65,8 @@ export function ThemeCustomizer({ open, onOpenChange, initialPrefs }: ThemeCusto
     })
   }, [sidebarConfig.variant, sidebarConfig.collapsible, sidebarConfig.side])
 
+  // --- Theme reset ---
+
   const handleReset = () => {
     setSelectedTheme("default")
     setSelectedTweakcnTheme("")
@@ -61,7 +75,7 @@ export function ThemeCustomizer({ open, onOpenChange, initialPrefs }: ThemeCusto
     setBrandColorsValues({})
     resetTheme()
     applyRadius("0.5rem")
-    void saveThemePrefsAction({ colorTheme: "default", tweakcnTheme: "", radius: "0.5rem" })
+    // colorThemeSaveEffect and radiusSaveEffect will fire via the state changes above
   }
 
   const handleImport = (themeData: ImportedTheme) => {
@@ -69,7 +83,7 @@ export function ThemeCustomizer({ open, onOpenChange, initialPrefs }: ThemeCusto
     setSelectedTheme("")
     setSelectedTweakcnTheme("")
     applyImportedTheme(themeData, isDarkMode)
-    // Imported themes have no stable ID to save
+    // Imported themes have no stable identifier to persist
   }
 
   // Re-apply when dark/light toggles
@@ -84,24 +98,6 @@ export function ThemeCustomizer({ open, onOpenChange, initialPrefs }: ThemeCusto
     }
   }, [isDarkMode, importedTheme, selectedTheme, selectedTweakcnTheme, applyImportedTheme, applyTheme, applyTweakcnTheme])
 
-  // Wrappers that also persist to Appwrite
-  const handleSetSelectedTheme = (value: string) => {
-    setSelectedTheme(value)
-    setSelectedTweakcnTheme("")
-    void saveThemePrefsAction({ colorTheme: value, tweakcnTheme: "" })
-  }
-
-  const handleSetSelectedTweakcnTheme = (value: string) => {
-    setSelectedTweakcnTheme(value)
-    setSelectedTheme("")
-    void saveThemePrefsAction({ tweakcnTheme: value, colorTheme: "" })
-  }
-
-  const handleSetSelectedRadius = (value: string) => {
-    setSelectedRadius(value)
-    void saveThemePrefsAction({ radius: value })
-  }
-
   return (
     <>
       <Sheet open={open} onOpenChange={onOpenChange} modal={false}>
@@ -159,13 +155,16 @@ export function ThemeCustomizer({ open, onOpenChange, initialPrefs }: ThemeCusto
               </div>
 
               <TabsContent value="theme" className="flex-1 mt-0">
+                {/* Pass RAW state setters — ThemeTab handles cross-clearing itself.
+                    Appwrite persistence is handled by the useEffects above, which fire
+                    once after React batches all state updates in the event handler. */}
                 <ThemeTab
                   selectedTheme={selectedTheme}
-                  setSelectedTheme={handleSetSelectedTheme}
+                  setSelectedTheme={setSelectedTheme}
                   selectedTweakcnTheme={selectedTweakcnTheme}
-                  setSelectedTweakcnTheme={handleSetSelectedTweakcnTheme}
+                  setSelectedTweakcnTheme={setSelectedTweakcnTheme}
                   selectedRadius={selectedRadius}
-                  setSelectedRadius={handleSetSelectedRadius}
+                  setSelectedRadius={setSelectedRadius}
                   setImportedTheme={setImportedTheme}
                   onImportClick={() => setImportModalOpen(true)}
                 />