feat: upgrade agent SDK to 0.2.92 with 1M context and 200k auto-compact

Use sonnet[1m] for full 1M context window and set auto-compact at 200k
tokens to keep costs down while preserving access to extended context.

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

container/agent-runner/package.json

@@ -9,7 +9,7 @@
     "start": "node dist/index.js"
   },
   "dependencies": {
-    "@anthropic-ai/claude-agent-sdk": "^0.2.76",
+    "@anthropic-ai/claude-agent-sdk": "^0.2.92",
     "@modelcontextprotocol/sdk": "^1.12.1",
     "cron-parser": "^5.0.0",
     "zod": "^4.0.0"