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>

gateway/run.py

@@ -432,7 +432,7 @@ class GatewayRunner:
             from honcho_integration.session import HonchoSessionManager
 
             hcfg = HonchoClientConfig.from_global_config()
-            if not hcfg.enabled or not hcfg.api_key:
+            if not hcfg.enabled or not (hcfg.api_key or hcfg.base_url):
                 return None, hcfg
 
             client = get_honcho_client(hcfg)