Monorepo-lite with shared @nexusai/core and @nexusai/mcp-server (stdio). Provider-agnostic tools with explicit provider selection; NordRouter adapter (media generate/poll/download, estimate, upload, models) and search via perplexity/sonar. Local STT via faster-whisper uv sidecar. SQLite journal of every generation for usage stats and future admin. 10 MCP tools.