Partitions the remaining catch sites into three waves (worker +
orchestration, IPC surfaces, database + credentials) so each wave is
one coherent review and can land in parallel with the B2 migration
precondition work that depends on classified DB catches.
Non-goals are explicit: no observable behaviour change, no renderer-
side coverage, no Result<T, AppError> envelope. The proposal exists
so the error taxonomy reaches the 95%+ coverage a lint rule needs.
ZacharyZhang-NY
32dfa89b7e