ops: commit netcup-specific docs, config, and M3 Bayesian reputation on netcup mainline

chore: gitignore __pycache__ + .pytest_cache

feat(t17+t21+t45): Infisical + integration tests + backup verification

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

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

feat(framework-6): kubernetes-grade health check hierarchy

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