chore: bump to v0.4.0

docs/releases/0.4.0.md

@@ -1,6 +1,6 @@
 ---
 version: 0.4.0
-date: 2026-10-29
+date: 2026-11-01
 highlights:
   - title: A model picker that knows what you can actually reach
     body: >-
@@ -30,6 +30,11 @@ highlights:
       You no longer get a question or permission notification for the session
       you are already looking at; the ones for your other sessions still
       arrive.
+  - title: Download images and PDFs straight from chat
+    body: >-
+      Images in chat and files open in the preview now have a download
+      button, so a plot or a paper an agent produced is one click from your
+      disk.
 links:
   notes: https://github.com/harmoniqs/amicode/releases/tag/v0.4.0
 ---

packages/extension/package.json

@@ -2,7 +2,7 @@
   "name": "amicode",
   "displayName": "Amicode",
   "description": "Open autonomous research in VS Code \u2014 vaults, fleet, and live solves for quantum control and physical intelligence.",
-  "version": "0.4.0-lane.1",
+  "version": "0.4.0",
   "publisher": "harmoniqs",
   "license": "Apache-2.0",
   "icon": "media/icon.png",