Daemon: a changed default model overrides the saved state (0.6.3)

In managed mode the extension switches models by rewriting the daemon config's
defaultModel and restarting it, but loadState() preferred the persisted model, so the
daemon came back on the old one every time. State now records the default it was saved
under; a different default wins.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J39imRDT8L7xYbWzsVWd8A

extensions/vscode/package.json

@@ -3,7 +3,7 @@
   "displayName": "Local Autocomplete",
   "description": "Inline code completion from a local fine-tuned model via the acd daemon",
   "publisher": "harvmaster",
-  "version": "0.6.2",
+  "version": "0.6.3",
   "license": "MIT",
   "engines": {
     "vscode": "^1.90.0"