refactor(architecture): split main.py into proper factory

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

feat(t29): research report generator

feat(t28): RSS ingest + LiteLLM + 116 fresh news items

feat(catalog+t28): wire all 5 stores + news intelligence product

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

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

fix(main): register middleware at module level, not in lifespan

feat(v3): ship new system — skip _legacy_main, mount v1 routers

fix(main): resolve lifespan conflict — keep legacy lifespan, add comment

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

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