fix: restore messages after redo

Refetches session messages before applying redo
Aligns undo/redo navigation with OpenCode behavior
Keeps restored messages visible after unrevert

packages/vscode/package.json

@@ -243,7 +243,7 @@
   },
   "dependencies": {
     "@openchamber/ui": "workspace:*",
-    "@opencode-ai/sdk": "^1.4.39",
+    "@opencode-ai/sdk": "^1.4.41",
     "adm-zip": "^0.5.16",
     "jsonc-parser": "^3.3.1",
     "react": "^19.1.1",