Koncept Mcp Server

Adds four MCP tools that query a local YAML concept registry for semantic invariants your codebase depends on but that don't live in code structure. You write concepts as YAML files under .koncept/concepts/, then Claude can read them before editing to understand cross-cutting rules like "all UI counting must exclude manual override participants" or "sector strings must match SectorAssignment keys." Think of it as documentation that's queryable and verified, not just comments. Currently pre-alpha with a schema that may still shift, but the team dogfoods it on the repo itself. Useful when your codebase has implicit constraints scattered across unrelated files that import graphs and ASTs won't surface.