feat(t33+t34): MCP server + x402 paid catalog

feat(catalog/t27): unified data catalog + RAG bridge + reputation

feat(v1): mount admin alerts webhook router, drop test routers

feat(framework-10): per-tier rate limiting with FastAPI Depends

feat(framework-2): domain-specific error catalog with FastAPI handlers

feat(rag): consolidate 14 RAG files into clean app/rag/ package facade

feat(x402): vertical slice — Pydantic facade over legacy x402 payment system

feat(scanner): vertical slice — Pydantic facade over legacy 4,109-line scanner

feat(token): vertical slice — pure-Python domain + 5 thin v1 routes

feat(wallet): vertical slice — pure-Python domain + 4 thin v1 routes

feat(alerts): vertical slice — pure-Python domain + thin v1 route

feat(foundation): wire DeepSeek core/ modules into new main.py