Validation pipeline that blocks AI-generated files with schema errors

Every time I used an LLM to generate structured knowledge files, the output would drift - wrong enum values, missing fields, dates in the wrong format, domain: [ai-system, api-design, devops, security] level: [beginner, intermediate, advanced] status: [draft, active, completed, archived] Change your ontology without touching code or redeploying. What it catches: wrong enum values (E001), missing required fields (E002), bad date formats (E003), type mismatches like akf generate "Write a guide on Docker networking" akf validate./vault/ Works with Claude, GPT-4, Gemini, Ollama.