Add Ollama setup helpers and database backup

src/lib/ollama.ts

@@ -71,6 +71,31 @@ export async function getOllamaStatus(): Promise<OllamaStatus> {
   }
 }
 
+export async function pullConfiguredOllamaModel() {
+  const { baseUrl, model } = getOllamaConfig();
+
+  let response: Response;
+
+  try {
+    response = await fetch(`${baseUrl}/api/pull`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ model, stream: false }),
+    });
+  } catch {
+    throw new OllamaUnavailableError("Ollama is not reachable at the configured URL.");
+  }
+
+  if (!response.ok) {
+    throw new OllamaUnavailableError(`Ollama pull failed with status ${response.status}.`);
+  }
+
+  return {
+    model,
+    message: `${model} is available for offline use.`,
+  };
+}
+
 export async function generateOllamaJson<T>({ prompt, model }: GenerateJsonInput): Promise<T> {
   const { baseUrl, model: configuredModel } = getOllamaConfig();
   const selectedModel = model ?? configuredModel;