External API integrations - pure API calls only. Services should:

• Make direct API calls to external systems
• Return consistent { success: boolean, data?: any, error?: string } format
• NOT handle environment variables or business logic
• NOT orchestrate multiple calls

• notion.service.ts - Notion API integration for database queries and page updates
  • Generic functions: updatePageProperties() for any property updates
  • Content management: Page content creation, updates, and deletion
  • Database operations: Query databases and retrieve pages
• openai.service.ts - OpenAI API integration with two-stage consensus analysis:
  • Stage 1: Individual transcript analysis using gpt-4o-mini for cost efficiency
  • Stage 2: Consensus synthesis using gpt-4o for high-quality reasoning
  • Features: Structured JSON output, confidence scoring, disagreement tracking, evidence tables
  • Concurrency: Configurable parallel processing with rate limiting
  • Fallback: Graceful error handling with fallback consensus calculation