fix: restore desktop startup and align tool previews with SDK updates

Add reflect-metadata bootstrap so desktop sidecar no longer crashes on startup.
Update SDK v1.4 compatibility for model variant and diff payload handling.
Unify write/edit/apply patch expanded previews and hide write success output noise.

packages/web/package.json

@@ -29,7 +29,7 @@
     "@fontsource/ibm-plex-sans": "^5.1.1",
     "@ibm/plex": "^6.4.1",
     "@octokit/rest": "^22.0.1",
-    "@opencode-ai/sdk": "^1.3.17",
+    "@opencode-ai/sdk": "^1.4.3",
     "@radix-ui/react-collapsible": "^1.1.12",
     "@radix-ui/react-dialog": "^1.1.15",
     "@radix-ui/react-dropdown-menu": "^2.1.16",
@@ -61,6 +61,7 @@
     "react-dom": "^19.1.1",
     "react-markdown": "^10.1.0",
     "react-syntax-highlighter": "^15.6.6",
+    "reflect-metadata": "^0.2.2",
     "remark-gfm": "^4.0.1",
     "simple-git": "^3.28.0",
     "sonner": "^2.0.7",