Fix mislabeled llama.cpp model storage default in Settings

The llama.cpp (local) section reused the Ollama section's 'Default (Ollama's
own location)' label for its own model storage location — but per
getLlamaCppModelsDir() in main.ts, the actual default is a dedicated
<userData>/llamacpp-models folder, entirely separate from where Ollama
stores its own blobs. The mislabeled UI told users their GGUF files
belonged in Ollama's directory, which they do not — Ollama's blob store
is content-addressed (sha256-named, no extension) and llama.cpp's
listModels() only scans a flat folder for *.gguf files directly, not
inside it. Also added a hint explaining this, since the row previously had
none at all.

Author: voidstackloop

frontend/src/lib/translations.ts

@@ -126,6 +126,8 @@ export interface Dictionary {
     modelsDir: string;
     modelsDirHint: string;
     modelsDirDefault: string;
+    llamaCppModelsDirDefault: string;
+    llamaCppModelsDirHint: string;
     chooseFolder: string;
     modelsDirApplied: string;
     modelsDirFailed: string;
@@ -490,6 +492,8 @@ export const en: Dictionary = {
     modelsDir: "Model storage location",
     modelsDirHint: "Where Ollama downloads and stores model files. Changing this restarts Ollama (only if this app started it) — running downloads will be interrupted.",
     modelsDirDefault: "Default (Ollama's own location)",
+    llamaCppModelsDirDefault: "Default (app data folder)",
+    llamaCppModelsDirHint: "Where llama.cpp looks for .gguf files — separate from Ollama's own storage above. Files must sit directly in this folder (not a subfolder) with a .gguf extension.",
     chooseFolder: "Choose folder...",
     modelsDirApplied: "Applied — Ollama restarted with the new location.",
     modelsDirFailed: "Couldn't restart Ollama with the new location. Try starting it manually.",
@@ -863,6 +867,8 @@ export const tr: Dictionary = {
     modelsDir: "Model depolama konumu",
     modelsDirHint: "Ollama'nın model dosyalarını indirdiği ve sakladığı yer. Bunu değiştirmek Ollama'yı yeniden başlatır (yalnızca bu uygulama başlattıysa) — devam eden indirmeler kesintiye uğrar.",
     modelsDirDefault: "Varsayılan (Ollama'nın kendi konumu)",
+    llamaCppModelsDirDefault: "Varsayılan (uygulama veri klasörü)",
+    llamaCppModelsDirHint: "llama.cpp'nin .gguf dosyalarını aradığı yer — yukarıdaki Ollama'nın kendi deposundan ayrıdır. Dosyalar bir alt klasörde değil, doğrudan bu klasörde olmalı ve .gguf uzantılı olmalıdır.",
     chooseFolder: "Klasör seç...",
     modelsDirApplied: "Uygulandı — Ollama yeni konumla yeniden başlatıldı.",
     modelsDirFailed: "Ollama yeni konumla yeniden başlatılamadı. Elle başlatmayı deneyin.",

frontend/src/pages/Settings.tsx

@@ -1072,10 +1072,10 @@ export default function Settings() {
                                         </SelectContent>
                                     </Select>
                                 </SettingsRow>
-                                <SettingsRow label={t.modelsDir} stacked>
+                                <SettingsRow label={t.modelsDir} description={t.llamaCppModelsDirHint} stacked>
                                     <div className="flex flex-wrap items-center gap-2">
                                         <span className="truncate rounded border border-border bg-muted px-2 py-1 font-mono text-xs">
-                                            {settings.llamaCppModelsDir ?? t.modelsDirDefault}
+                                            {settings.llamaCppModelsDir ?? t.llamaCppModelsDirDefault}
                                         </span>
                                         <Button
                                             size="sm"