Refactor csc serve question endpoints to match opencode/app-ai-native
expected data models and request/response shapes:
- GET /question now returns QuestionRequest[] (direct array) instead of
{ questions: [...] }
- POST /question/:id/reply accepts { answers: string[][] } mapping to
selected option labels per question
- POST /question/:id/reject no longer requires a request body
- Support dual question sources:
- MCP Elicitation (converted to opencode format with enum→options)
- AskUserQuestionTool permissions exposed as questions
- Add conversion helpers: convertAskUserQuestionToOpencode,
convertElicitationToOpencode, buildElicitationContent
- Reply to AskUserQuestionTool via replyPermission('allow') with
constructed updatedInput.answers map
Also includes serve-mode infrastructure improvements:
- Session routes auto-create sessions on demand via getOrCreateSession
- Set CSC_SERVE_MODE env var in child process spawn
- Skip push-suggestion stream waiting in serve mode
Add comprehensive unit tests for question route opencode conversion.
Co-authored-by: CoStrict <zgsm@sangfor.com.cn>
