feat: add managed tool gateway and Nous subscription support

- add managed modal and gateway-backed tool integrations\n- improve CLI setup, auth, and configuration for subscriber flows\n- expand tests and docs for managed tool support

run_agent.py

@@ -74,6 +74,7 @@ from hermes_constants import OPENROUTER_BASE_URL
 from agent.prompt_builder import (
     DEFAULT_AGENT_IDENTITY, PLATFORM_HINTS,
     MEMORY_GUIDANCE, SESSION_SEARCH_GUIDANCE, SKILLS_GUIDANCE,
+    build_nous_subscription_prompt,
 )
 from agent.model_metadata import (
     fetch_model_metadata,
@@ -2388,6 +2389,10 @@ class AIAgent:
         if tool_guidance:
             prompt_parts.append(" ".join(tool_guidance))
 
+        nous_subscription_prompt = build_nous_subscription_prompt(self.valid_tool_names)
+        if nous_subscription_prompt:
+            prompt_parts.append(nous_subscription_prompt)
+
         # Honcho CLI awareness: tell Hermes about its own management commands
         # so it can refer the user to them rather than reinventing answers.
         if self._honcho and self._honcho_session_key: