diff --git a/src/lib/components/chat/Messages/CodeBlock.svelte b/src/lib/components/chat/Messages/CodeBlock.svelte
index ef7c823dd..1be70cdeb 100644
--- a/src/lib/components/chat/Messages/CodeBlock.svelte
+++ b/src/lib/components/chat/Messages/CodeBlock.svelte
@@ -2,7 +2,7 @@
 	import hljs from 'highlight.js';
 	import { toast } from 'svelte-sonner';
 	import { getContext, onMount, tick, onDestroy } from 'svelte';
-	import { config } from '$lib/stores';
+	import { config, pyodideWorker as pyodideWorkerStore } from '$lib/stores';
 
 	import PyodideWorker from '$lib/workers/pyodide.worker?worker';
 	import { executeCode } from '$lib/apis/utils';
@@ -47,7 +47,7 @@
 	export let editorClassName = '';
 	export let stickyButtonsClassName = 'top-0';
 
-	let pyodideWorker = null;
+	let localPyodideWorker = null;
 
 	let _code = '';
 	$: if (code) {
@@ -237,27 +237,42 @@
 
 		console.log(packages);
 
-		pyodideWorker = new PyodideWorker();
+		// Reuse the shared Pyodide worker when code interpreter is active,
+		// so files written here are immediately visible in PyodideFileNav.
+		// Otherwise fall back to a throwaway worker.
+		const sharedWorker = $pyodideWorkerStore;
+		const isShared = !!sharedWorker;
+		const worker = sharedWorker ?? new PyodideWorker();
 
-		pyodideWorker.postMessage({
+		if (!isShared) {
+			localPyodideWorker = worker;
+		}
+
+		worker.postMessage({
 			id: id,
 			code: code,
 			packages: packages
 		});
 
-		setTimeout(() => {
+		const timeoutId = setTimeout(() => {
 			if (executing) {
 				executing = false;
 				stderr = 'Execution Time Limit Exceeded';
-				pyodideWorker.terminate();
+				if (!isShared) {
+					worker.terminate();
+					localPyodideWorker = null;
+				}
 			}
 		}, 60000);
 
-		pyodideWorker.onmessage = (event) => {
-			console.log('pyodideWorker.onmessage', event);
-			const { id, ...data } = event.data;
+		const handler = (event) => {
+			// Ignore messages from other requests on the shared worker
+			if (event.data?.id !== id) return;
 
-			console.log(id, data);
+			console.log('pyodideWorker.onmessage', event);
+			const { id: _id, ...data } = event.data;
+
+			console.log(_id, data);
 
 			if (data['stdout']) {
 				stdout = data['stdout'];
@@ -320,11 +335,20 @@
 			data['stderr'] && (stderr = data['stderr']);
 			data['result'] && (result = data['result']);
 
+			clearTimeout(timeoutId);
+			worker.removeEventListener('message', handler);
 			executing = false;
+
+			// Signal PyodideFileNav to auto-refresh after execution
+			window.dispatchEvent(new Event('pyodide:files'));
 		};
 
-		pyodideWorker.onerror = (event) => {
+		worker.addEventListener('message', handler);
+
+		worker.onerror = (event) => {
 			console.log('pyodideWorker.onerror', event);
+			clearTimeout(timeoutId);
+			worker.removeEventListener('message', handler);
 			executing = false;
 		};
 	};
@@ -412,8 +436,9 @@
 	});
 
 	onDestroy(() => {
-		if (pyodideWorker) {
-			pyodideWorker.terminate();
+		if (localPyodideWorker) {
+			localPyodideWorker.terminate();
+			localPyodideWorker = null;
 		}
 	});
 </script>
diff --git a/src/lib/components/chat/PyodideFileNav.svelte b/src/lib/components/chat/PyodideFileNav.svelte
index 73a10325d..ca2c5eb46 100644
--- a/src/lib/components/chat/PyodideFileNav.svelte
+++ b/src/lib/components/chat/PyodideFileNav.svelte
@@ -3,7 +3,7 @@
 </script>
 
 <script lang="ts">
-	import { getContext, onMount, tick } from 'svelte';
+	import { getContext, onMount, onDestroy, tick } from 'svelte';
 	import { pyodideWorker } from '$lib/stores';
 	import PyodideWorkerConstructor from '$lib/workers/pyodide.worker?worker';
 	import type { FileEntry } from '$lib/apis/terminal';
@@ -282,9 +282,21 @@
 
 	// ── Lifecycle ─────────────────────────────────────────────────────────
 
+	const onFilesChanged = async () => {
+		try {
+			await sendWorkerMessage({ type: 'fs:sync' });
+		} catch {}
+		loadDir(currentPath);
+	};
+
 	onMount(() => {
 		ensureWorker();
 		loadDir(currentPath);
+		window.addEventListener('pyodide:files', onFilesChanged);
+	});
+
+	onDestroy(() => {
+		window.removeEventListener('pyodide:files', onFilesChanged);
 	});
 </script>
 
@@ -335,14 +347,18 @@
 		{selectedFile}
 		{loading}
 		onNavigate={(path) => loadDir(path)}
-		onRefresh={() => {
-			if (selectedFile) {
-				const name = selectedFile.split('/').pop() ?? '';
-				openEntry({ name, type: 'file', size: 0 });
-			} else {
-				loadDir(currentPath);
-			}
-		}}
+		onRefresh={async () => {
+		// Sync from IndexedDB first to pick up files written by code execution
+		try {
+			await sendWorkerMessage({ type: 'fs:sync' });
+		} catch {}
+		if (selectedFile) {
+			const name = selectedFile.split('/').pop() ?? '';
+			openEntry({ name, type: 'file', size: 0 });
+		} else {
+			loadDir(currentPath);
+		}
+	}}
 		onNewFolder={startNewFolder}
 		onNewFile={startNewFile}
 		onUploadFiles={uploadFiles}
diff --git a/src/lib/workers/pyodide.worker.ts b/src/lib/workers/pyodide.worker.ts
index 7ef391673..cdbd9006e 100644
--- a/src/lib/workers/pyodide.worker.ts
+++ b/src/lib/workers/pyodide.worker.ts
@@ -305,6 +305,17 @@ self.onmessage = async (event) => {
 			break;
 		}
 
+		case 'fs:sync': {
+			// Re-read from IndexedDB into memory to pick up externally written files
+			(self.pyodide.FS as any).syncfs(true, (err: Error | null) => {
+				if (err) {
+					console.error('Error syncing from IndexedDB:', err);
+				}
+				self.postMessage({ id, type: 'fs:sync', success: !err });
+			});
+			break;
+		}
+
 		default:
 			console.warn('Unknown message type:', type);
 	}