feat: integrate Pi backend and Pi Web

pi/packages/coding-agent/examples/sdk/02-custom-model.ts

@@ -0,0 +1,50 @@
+/**
+ * Custom Model Selection
+ *
+ * Shows how to select a specific model and thinking level.
+ */
+
+import { getModel } from "@earendil-works/pi-ai/compat";
+import { createAgentSession, ModelRuntime } from "@earendil-works/pi-coding-agent";
+
+const modelRuntime = await ModelRuntime.create();
+
+// Option 1: Find a specific built-in model by provider/id
+const opus = getModel("anthropic", "claude-opus-4-5");
+if (opus) {
+	console.log(`Found model: ${opus.provider}/${opus.id}`);
+}
+
+// Option 2: Find model via registry (includes custom models from models.json)
+const customModel = modelRuntime.getModel("my-provider", "my-model");
+if (customModel) {
+	console.log(`Found custom model: ${customModel.provider}/${customModel.id}`);
+}
+
+// Option 3: Pick from available models (have valid API keys)
+const available = await modelRuntime.getAvailable();
+console.log(
+	"Available models:",
+	available.map((m) => `${m.provider}/${m.id}`),
+);
+
+if (available.length > 0) {
+	const { session } = await createAgentSession({
+		model: available[0],
+		thinkingLevel: "medium", // off, low, medium, high
+		modelRuntime,
+	});
+
+	try {
+		session.subscribe((event) => {
+			if (event.type === "message_update" && event.assistantMessageEvent.type === "text_delta") {
+				process.stdout.write(event.assistantMessageEvent.delta);
+			}
+		});
+
+		await session.prompt("Say hello in one sentence.");
+		console.log();
+	} finally {
+		session.dispose();
+	}
+}