Routing gate for instruction-file edits that decides where new content belongs and pushes back on bloat. Use before ANY edit, of any size, even mid multi-file sweeps, to CLAUDE.md, AGENTS.md, MEMORY.md, memory topic files, or any file under `.claude/rules/`, at any path depth including nested instances. Also when the user says "add this to CLAUDE.md", "remember this", "note this in the rules", or similar. For bulk restructuring of an oversized file, use instruction-cleanup instead.