Agent Skills: improve-codebase-architecture

Find deepening opportunities in a codebase, informed by the domain language in CONTEXT.md and the decisions in docs/adr/. Use when the user wants to improve architecture, find refactoring opportunities, consolidate tightly-coupled modules, or make a codebase more testable and AI-navigable. Load with read_file on .kilocode/skills/improve-codebase-architecture/SKILL.md (ignore the absolute path in the location tag).