feat(coding-agent/eval): tracked and forwarded session id and working directory

- Added `sessionId` and `cwd` tracking to JS evaluator session instances.
- Updated `acquireSession` in the JS context manager to update existing session identity and directory metadata on reuse.
- Forwarded the current working directory from `executePerCall` and `executeOnSession` callers to the underlying Python kernel tasks.

packages/coding-agent/src/eval/js/context-manager.ts

@@ -44,6 +44,8 @@ interface PendingRun {
 
 interface JsSession {
 	sessionKey: string;
+	sessionId: string;
+	cwd: string;
 	worker: WorkerHandle;
 	state: "alive" | "dead";
 	pending: Map<string, PendingRun>;
@@ -151,7 +153,14 @@ export async function disposeAllVmContexts(): Promise<void> {
  */
 export async function smokeTestJsEvalWorker(): Promise<void> {
 	const worker = spawnJsWorker();
-	const session: JsSession = { sessionKey: "smoke", worker, state: "alive", pending: new Map() };
+	const session: JsSession = {
+		sessionKey: "smoke",
+		sessionId: "smoke",
+		cwd: process.cwd(),
+		worker,
+		state: "alive",
+		pending: new Map(),
+	};
 	try {
 		await initWorker(session, { cwd: process.cwd(), sessionId: "smoke" }, WORKER_INIT_TIMEOUT_MS);
 		if (worker.mode !== "worker") {
@@ -219,7 +228,11 @@ async function runOnce(
 
 async function acquireSession(sessionKey: string, snapshot: SessionSnapshot, timeoutMs?: number): Promise<JsSession> {
 	const existing = sessions.get(sessionKey);
-	if (existing && existing.state === "alive") return existing;
+	if (existing && existing.state === "alive") {
+		existing.sessionId = snapshot.sessionId;
+		existing.cwd = snapshot.cwd;
+		return existing;
+	}
 	const starting = startingSessions.get(sessionKey);
 	if (starting) return await starting;
 
@@ -231,6 +244,8 @@ async function acquireSession(sessionKey: string, snapshot: SessionSnapshot, tim
 		const worker = spawnJsWorker();
 		const session: JsSession = {
 			sessionKey,
+			sessionId: snapshot.sessionId,
+			cwd: snapshot.cwd,
 			worker,
 			state: "alive",
 			pending: new Map(),

packages/coding-agent/src/eval/py/executor.ts

@@ -632,7 +632,7 @@ async function executePerCall(code: string, cwd: string, options: PythonExecutor
 	}
 	const kernel = await startKernel(cwd, options);
 	try {
-		return await executeWithKernel(kernel, code, { ...options, cwd: undefined });
+		return await executeWithKernel(kernel, code, { ...options, cwd });
 	} finally {
 		await kernel.shutdown().catch(() => undefined);
 	}
@@ -682,7 +682,7 @@ async function executeOnSession(code: string, cwd: string, options: PythonExecut
 			throw new PythonExecutionCancelledError(false);
 		}
 	}
-	const runOptions = { ...options, cwd: undefined };
+	const runOptions = { ...options, cwd };
 	try {
 		return await executeWithKernel(session.kernel, code, runOptions);
 	} catch (err) {