Address hermes-sweeper review on #76487:
- Prefer hermes_profile from send metadata when pruning stale topic
bindings so profile_routes cannot delete the transport adapter's
namespace instead of the routed runtime's
- Namespace lobby/capability cooldowns and /topic off cleanup by
(profile, chat_id)
- Document profile_name PKs and scoped cleanup SQL in telegram.md
- Regression: primary-adapter stamp + routed metadata prune isolation