Follow-on to the cron extraction in the same Phase 2 PR. Same pattern:
per-group build_<name>_parser() functions with injected handlers, no main
import.
- subcommands/profile.py: build_profile_parser (190-line block out of main()).
- subcommands/gateway.py: build_gateway_parser (gateway + proxy, 238-line block;
they shared one inline section). Imports argparse for SUPPRESS defaults.
- main(): two more inline blocks become single builder calls.
Behavior-neutral: 'profile [sub] --help' and 'gateway/proxy [sub] --help'
byte-identical to pre-extraction (diff-verified).
main() now 2723 LOC (was 3297 at Phase 2 start); add_parser calls in main.py
179 -> 141.
Validation: tests/hermes_cli/ 6476 passed / 0 failed under per-file process
isolation; new builder unit tests cover subactions, aliases, dispatch, flags.
