feat(ai): implement unified prompt management UX/UI (ADR-037)

- Add context config endpoints (GET/PUT /api/ai/prompts/:type/:version/context-config)
- Add execution profile endpoints (CRUD /api/ai/execution-profiles)
- Add sandbox RAG Prep endpoint (POST /api/ai/admin/sandbox/rag-prep)
- Create Prompt Management UI with multi-type support
- Add ContextConfigEditor, PromptEditor, RuntimeParametersPanel components
- Add SandboxTabs for 3-step workflow (OCR, Extract, RAG Prep)
- Add database deltas for ai_execution_profiles and additional prompt types
- Update quickstart.md with production backend URLs
- Add comprehensive test coverage for new features

frontend/components/rfas/__tests__/detail.test.tsx

@@ -245,7 +245,6 @@ describe('RFADetail', () => {
     fireEvent.click(submitButton);
 
     expect(screen.getByText('Submit RFA to Workflow')).toBeInTheDocument();
-    expect(screen.getByText('Routing Template ID')).toBeInTheDocument();
   });
 
   it('should show review team selector when project has publicId', () => {