feat: upgrade claude-agent-sdk to 0.2.38 and adapt to new SDK types (#113)

* feat: upgrade claude-agent-sdk to 0.2.38 and adapt to new SDK types

- Bump @anthropic-ai/claude-agent-sdk from 0.1.x to 0.2.38 (both root and mcp-server)
- Bump zod from 3.x to 4.x (SDK peer dependency)
- Add allowDangerouslySkipPermissions to query options (required for bypassPermissions)
- Suppress new SDK message types (tool_progress, tool_use_summary, auth_status)
- Use structured error field on assistant messages instead of text-sniffing
- Add stop_reason to result message handling for diagnostics
- Add SDKAssistantMessageError type matching SDK's string literal union

* chore: remove CLAUDE_CODE_MAX_OUTPUT_TOKENS from all config and docs

docker-compose.yml

@@ -24,7 +24,6 @@ services:
       - ANTHROPIC_AUTH_TOKEN=${ANTHROPIC_AUTH_TOKEN:-}  # Auth token for router
       - ROUTER_DEFAULT=${ROUTER_DEFAULT:-}  # Model name when using router (e.g., "gemini,gemini-2.5-pro")
       - CLAUDE_CODE_OAUTH_TOKEN=${CLAUDE_CODE_OAUTH_TOKEN:-}
-      - CLAUDE_CODE_MAX_OUTPUT_TOKENS=${CLAUDE_CODE_MAX_OUTPUT_TOKENS:-64000}
     depends_on:
       temporal:
         condition: service_healthy