Salvage follow-up for PR #68899:
- Restore .rstrip('/') on base_url in _swap_credential (both anthropic
and OpenAI paths) to match every other assignment site. The route
identity comparison still uses normalize_route_base_url which handles
trailing slash correctly.
- Extract should_clear_context_pin() into hermes_cli/route_identity.py,
consolidating 7 copy-pasted call sites across cli.py, gateway/run.py,
gateway/slash_commands.py, and hermes_cli/model_switch.py into a
single fail-closed helper.
C1 (anthropic path TLS re-application): pre-existing gap — the Anthropic
adapter (build_anthropic_client) has no TLS customization support at
all, so this is out of scope for this salvage.
