Follow-up to the salvaged contributor commit:
- Underscore→hyphen tolerance now emits a resolvable token. Previously
the detect set accepted the hyphenated variant but emit returned the
raw token, so '!set_home' produced '/set_home' which the dispatcher
could not resolve. Now emits '/set-home'. Aliases are left as-is — the
gateway dispatcher canonicalizes them itself.
- Fix dead skill-command branch: skill command keys are stored
slash-prefixed (e.g. '/arxiv') in get_skill_commands(), but the check
compared the bare token, so '!arxiv' never normalized. Now compares
the '/candidate' form, making skill aliases (e.g. !gif-search) work.
- Re-run bang normalization after Matrix reply-fallback stripping so a
quoted reply whose content is a bang command reaches command parity
with the slash form.
- Replace silent 'except Exception: pass' with logger.debug(exc_info=True).
- Add AUTHOR_MAP entry for @nepenth.
Tests: +5 (underscore-alias, skill-command branch, quoted-reply bang +
slash parity). 162 Matrix tests pass.