updating-documentation

Update existing project documentation to reflect changes made during a session. Analyzes what changed in code and surgically updates only affected documentation. Use when (1) a coding session has modified component behavior or interfaces, (2) implementation work is complete and docs need to stay in sync, (3) refactoring changed patterns or conventions, or (4) code was deleted and docs may reference removed things. Run at the end of a session — "when it's all said and done."