fix(container): bump Claude Code to 2.1.116 and Agent SDK to ^0.2.116

The Agent SDK's IPC protocol must match the Claude Code version. Also
allowlist @anthropic-ai/claude-code in only-built-dependencies so its
postinstall script runs during Docker build — without this, the native
binary is never installed and the SDK fails at spawn time.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

container/agent-runner/package.json

@@ -9,7 +9,7 @@
     "test": "bun test"
   },
   "dependencies": {
-    "@anthropic-ai/claude-agent-sdk": "^0.2.92",
+    "@anthropic-ai/claude-agent-sdk": "^0.2.116",
     "@modelcontextprotocol/sdk": "^1.12.1",
     "cron-parser": "^5.0.0",
     "zod": "^4.0.0"