Ln 120 Reference Docs Creator

This is a worker skill that builds out your docs/reference/ structure and populates it with ADRs, guides, and manuals based on your tech stack. The smart part is it only creates documentation for nontrivial choices where alternatives exist. If you picked PostgreSQL over MySQL, you get an ADR. If you're using in-memory cache, it skips it. Uses MCP research calls to pull real context about libraries and patterns, then fills templates with justified decisions and rationale. It's designed to run as part of the ln-100 documentation pipeline but can work standalone. Honestly, the justification logic is what makes this worth using instead of just copying templates yourself.