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/ui/src/sync/session-cache.ts

@@ -1,5 +1,4 @@
 import type {
-  FileDiff,
   Message,
   Part,
   PermissionRequest,
@@ -7,6 +6,7 @@ import type {
   SessionStatus,
   Todo,
 } from "@opencode-ai/sdk/v2/client"
+import type { FileDiff } from "./types"
 
 type SessionCache = {
   session_status: Record<string, SessionStatus | undefined>