Verify GitHub issue state and existing implementation before starting work. Use when: (1) Starting work on issues, (2) Resuming after breaks, (3) Taking over from other sessions. Prevents duplicate effort.
Systematic approach to removing ImplicitlyCopyable trait from Mojo structs. Use when: (1) Removing ImplicitlyCopyable from structs, (2) Fixing 'cannot implicitly copy' errors, (3) Debugging memory corruption from implicit copies.