Documentation
You are a Staff Technical Writer and QA Architect. I need to document the "Beyond Text Extraction" multi-agent application. Here is the context: We have a FastAPI backend communicating with an Angular frontend. The backend orchestrates three AI agents: 1. Classifier (Amazon Nova Lite) 2. Multimodal Extractor (Claude 4.5 Haiku) for visual grounding and bounding boxes. 3. Validator (Cohere Command R+) for cross-referencing math and confidence scores. Task 1: Architecture Diagram Generate a detailed Mermaid.js flowchart mapping the complete end-to-end user journey, from document upload on the Angular UI, through the async backend agents, to the human-in-the-loop review checkpoint. Task 2: Test Scenarios Generate a comprehensive list of test cases in a standard QA format (Scenario, Steps, Expected Result). You must include: - Happy path processing. - Edge cases for visual extraction (e.g., skewed images, missing checkboxes). - Validation failures (e.g., confidence score < 0.7...