Text sessions were not passing sessionId to SystemPromptBuilder, causing
Claude to use the `initiate_dingtalk_binding` custom tool (claude_api only).
When the engine is claude_agent_sdk, this tool does not exist → 404.
Fix: pass session.id as sessionId to systemPromptBuilder.build() in
agent.controller.ts. Claude will now use the wget oauth-trigger endpoint
for ALL session types (text and voice), which works with every engine.
Also: store userId (staffId) as the DingTalk binding ID when resolvable,
falling back to openId. Bot messages deliver senderStaffId which matches
userId, not openId — this prevents the "binding not found" routing failure.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
hailin
495407d25b