feat: 설정에 LLM 모델 선택 드롭다운 추가

Ollama에서 사용 가능한 모델 목록을 자동 로드하고
설정 > LLM 탭에서 선택할 수 있게 추가.
기존 404 에러(qwen3:4b 미설치) 해결.

src/renderer/components/SettingsModal.tsx

@@ -203,6 +203,9 @@ export function SettingsModal({ open, onClose }: SettingsModalProps): React.Reac
   const [hotkeyModalOpen, setHotkeyModalOpen] = useState(false)
   const [hotkeyModalTarget, setHotkeyModalTarget] = useState<'dictation' | 'handsFree' | 'caption'>('dictation')
 
+  // LLM 모델 목록
+  const [llmModels, setLlmModels] = useState<Array<{ id: string; name: string; parameterSize: string }>>([])
+
   // 오디오 디바이스
   const [audioDevices, setAudioDevices] = useState<AudioDevice[]>([])
   const [selectedDeviceId, setSelectedDeviceId] = useState<string>('default')
@@ -240,6 +243,11 @@ export function SettingsModal({ open, onClose }: SettingsModalProps): React.Reac
       if (devicesResult.success) setAudioDevices(devicesResult.data)
       if (selectedResult.success && selectedResult.data) setSelectedDeviceId(selectedResult.data)
     })
+
+    // LLM 모델 목록 로드
+    window.electronAPI.llm.getModels().then((resp) => {
+      if (resp.success) setLlmModels(resp.data)
+    })
   }, [open])
 
   const updateConfig = useCallback((key: keyof AppConfig, value: AppConfig[keyof AppConfig]) => {
@@ -657,6 +665,29 @@ export function SettingsModal({ open, onClose }: SettingsModalProps): React.Reac
 
               <Divider sx={{ borderColor: d3roPalette.border.subtle }} />
 
+              <Typography variant="overline" sx={{ color: d3roPalette.text.label, letterSpacing: '1.5px' }}>
+                {t('settings.llmModel')}
+              </Typography>
+
+              <FormControl size="small">
+                <InputLabel>{t('settings.llmModel')}</InputLabel>
+                <Select
+                  label={t('settings.llmModel')}
+                  value={(config as Record<string, unknown>)['llmModelId'] as string ?? ''}
+                  onChange={(e) => {
+                    updateConfig('llmModelId' as keyof AppConfig, e.target.value as never)
+                  }}
+                >
+                  {llmModels.map((model) => (
+                    <MenuItem key={model.id} value={model.id}>
+                      {model.name} ({model.parameterSize})
+                    </MenuItem>
+                  ))}
+                </Select>
+              </FormControl>
+
+              <Divider sx={{ borderColor: d3roPalette.border.subtle }} />
+
               <Typography variant="overline" sx={{ color: d3roPalette.text.label, letterSpacing: '1.5px' }}>
                 {t('settings.postProcess')}
               </Typography>

src/renderer/i18n/en.json

@@ -111,6 +111,7 @@
   "settings.ollamaServer": "Ollama Server",
   "settings.ollamaUrl": "Ollama Server URL",
   "settings.ollamaHint": "Connects automatically when Ollama is running. Pull models directly in Ollama (e.g. ollama pull qwen3:4b).",
+  "settings.llmModel": "LLM Model",
   "settings.postProcess": "Voice Post-Processing",
   "settings.defaultAction": "Default Post-Processing Command",
   "settings.action.none": "None (raw transcription)",

src/renderer/i18n/ko.json

@@ -111,6 +111,7 @@
   "settings.ollamaServer": "Ollama 서버",
   "settings.ollamaUrl": "Ollama 서버 URL",
   "settings.ollamaHint": "Ollama가 실행 중이면 자동으로 연결됩니다. 모델은 Ollama에서 직접 pull하세요 (예: ollama pull qwen3:4b).",
+  "settings.llmModel": "LLM 모델",
   "settings.postProcess": "음성 후처리",
   "settings.defaultAction": "기본 후처리 명령어",
   "settings.action.none": "없음 (원본 텍스트 그대로)",