Field notes from building a company brain.

Nightly indexing of 120+ repos on EFS, an arm64 webserver with an nginx sidecar, and why agents need codebase awareness before they need autonomy.

RAG grounding, citation-mandatory prompting, an eval harness that blocks deploys, and a public MCP server. The portfolio as a working system.

Why "point an LLM at the logs" fails, the 11-tool Jenkins surface, and the taxonomy that turns red X's into ticket-ready root-cause reports.

A cost dashboard that lied by 2.5x, a model swap that looked like a 71% saving, and the eval harness that rejected it twice — for two completely different reasons.