fix(honcho): allow self-hosted local instances without API key (#3644)

Self-hosted Honcho on localhost doesn't require authentication, but
both the activation gates and the SDK client required an API key.

Combined fix from three contributor PRs:
- Relax all 8 activation gates to accept (api_key OR base_url) as
  valid credentials (#3482 by @cameronbergh)
- Use 'local' placeholder for the SDK client when base_url points to
  localhost/127.0.0.1/::1 (#3570 by @ygd58)

Files changed: run_agent.py (2 gates), cli.py (1 gate),
gateway/run.py (1 gate), honcho_integration/cli.py (2 gates),
hermes_cli/doctor.py (2 gates), honcho_integration/client.py (SDK).

Co-authored-by: cameronbergh <cameronbergh@users.noreply.github.com>
Co-authored-by: ygd58 <ygd58@users.noreply.github.com>
Co-authored-by: devorun <devorun@users.noreply.github.com>

cli.py

@@ -6103,7 +6103,7 @@ class HermesCLI:
             from honcho_integration.client import HonchoClientConfig
             from agent.display import honcho_session_line, write_tty
             hcfg = HonchoClientConfig.from_global_config()
-            if hcfg.enabled and hcfg.api_key and hcfg.explicitly_configured:
+            if hcfg.enabled and (hcfg.api_key or hcfg.base_url) and hcfg.explicitly_configured:
                 sname = hcfg.resolve_session_name(session_id=self.session_id)
                 if sname:
                     write_tty(honcho_session_line(hcfg.workspace_id, sname) + "\n")