feat: model selection at spawn (POST /api/spawn model -> LVMH_MODEL -> bridge createAgentSession); ops prepare resets ops session (fresh context per prepare)

2026-08-20 12:43:55 +02:00
parent 5292a69d66
commit 2d0839357d
11 changed files with 553 additions and 48 deletions
@@ -4,7 +4,10 @@
 // Global npm layout: resolve pi via absolute path (NODE_PATH does not apply to ESM).
 import { spawn } from "node:child_process";
 import { existsSync } from "node:fs";
-import { createAgentSession } from "/usr/local/lib/node_modules/@earendil-works/pi-coding-agent/dist/index.js";
+import {
+	createAgentSession,
+	ModelRuntime,
+} from "/usr/local/lib/node_modules/@earendil-works/pi-coding-agent/dist/index.js";

 const SETUP_PATH = "/workspace/.lvmh/setup.sh";
 const SETUP_TIMEOUT_MS = 10 * 60 * 1000;
@@ -57,7 +60,30 @@ process.on("unhandledRejection", (err) => {

 try {
 	await runRepoSetup();
-	const { session } = await createAgentSession();
+	// Optional initial model: LVMH_MODEL="provider/model-id" from the spawn
+	// request. Resolved against the session's model registry; a bad value is
+	// logged and falls back to the default model.
+	const requested = process.env.LVMH_MODEL ?? "";
+	let model;
+	if (requested.includes("/")) {
+		const slashIdx = requested.indexOf("/");
+		const provider = requested.slice(0, slashIdx);
+		const modelId = requested.slice(slashIdx + 1);
+		try {
+			const runtime = await ModelRuntime.create();
+			const models = await runtime.getAvailable(provider);
+			const found = models.find((m) => m.id === modelId);
+			if (found === undefined) {
+				console.error(`[lvmh-bridge] LVMH_MODEL ${requested} not found; using default`);
+			} else {
+				model = found;
+				console.error(`[lvmh-bridge] initial model: ${requested}`);
+			}
+		} catch (err) {
+			console.error(`[lvmh-bridge] model resolution failed:`, err);
+		}
+	}
+	const { session } = await createAgentSession(model === undefined ? {} : { model });
 	// SDK does not bind extensions implicitly (unlike TUI/RPC modes); without
 	// bindExtensions the session_start event never fires, so the lvmh plugin
 	// would never dial the daemon.