fix(release): stop shipping native modules built for the wrong runtime

The released installer could not start: it carried a better-sqlite3 build for the
host Node runtime instead of Electron, so the app died immediately with a module
version mismatch when it opened its database.

Packaging now proves the Electron build of every runtime-sensitive native module
before an installer or archive exists, and installers are produced only from that
verified tree, so the mistake cannot pass silently. The release pipelines run the
same check.

The default local model also pointed at a retired model: a *.gguf name that
Ollama cannot serve, while the settings, onboarding, and guide screens
recommended an older model. All of them now use the model the service code
already preferred.

apps/desktop/src/renderer/components/OllamaGuideModal.tsx

@@ -146,7 +146,7 @@ export function OllamaGuideModal({ open, onClose }: OllamaGuideModalProps): Reac
   const { t } = useI18n()
   const [llmStatus, setLlmStatus] = useState<LLMStatus | null>(null)
   const [installedModels, setInstalledModels] = useState<LLMModel[]>([])
-  const [activeModel, setActiveModel] = useState<string>('gemma2:2b')
+  const [activeModel, setActiveModel] = useState<string>('gemma4:e4b')
   const [checking, setChecking] = useState(false)
   const [starting, setStarting] = useState(false)
   const [startMessage, setStartMessage] = useState<string | null>(null)
@@ -582,7 +582,7 @@ export function OllamaGuideModal({ open, onClose }: OllamaGuideModalProps): Reac
             <Typography sx={{ fontSize: '11px', color: d3roPalette.text.dimLabel }}>
               직접 터미널에서 다운로드하려면 아래 명령어를 실행하세요:
             </Typography>
-            <CodeBlock code="ollama pull gemma2:2b" />
+            <CodeBlock code="ollama pull gemma4:e4b" />
           </Box>
         </Box>