framework
Runtime used for verification and editing in the run: node --check on extracted guard JavaScript and node -e for the structured JSON edit.
No evidence-backed relationships are recorded.
Claude Code scopes rules with paths, Cursor with globs, Copilot with a comma-delimited applyTo. Copilot reads Claude's rules directory, but not the file references inside it.
Reality
The one-line Express 5 replacement claims 2x to 20x faster routing. Its author is explicit that the spread lands on thousand-route tables, not on hello world.
Reality
One run, one instruction file sitting inside the writable workspace, and a path-keyed approval gate with nothing to object to. Guardrails you can edit are documentation.
Reality