fix(server): update Claude Agent SDK to 0.3.260

Parity with Claude Code 2.1.260. The 0.3.259 and 0.3.260 releases add
optional fields only (user_message_uuids, permissionPrompts, extra
timing fields), so the adapter needs no code change.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

Author: t3dotgg

apps/server/package.json

@@ -22,7 +22,7 @@
     "test": "vp test run"
   },
   "dependencies": {
-    "@anthropic-ai/claude-agent-sdk": "^0.3.258",
+    "@anthropic-ai/claude-agent-sdk": "^0.3.260",
     "@effect/platform-bun": "catalog:",
     "@effect/platform-node": "catalog:",
     "@effect/sql-sqlite-bun": "catalog:",

pnpm-lock.yaml

@@ -90,7 +90,7 @@ minimumReleaseAgeExclude:
   - expo-updates@57.0.19
   - expo@57.0.18
   - expo-widgets@57.0.15
-  - "@anthropic-ai/claude-agent-sdk@0.3.258"
+  - "@anthropic-ai/claude-agent-sdk@0.3.260"
 
 overrides:
   # The SDK always receives the user's Claude executable, so its bundled binaries are unused.