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

agent/prompt_builder.py

@@ -422,6 +422,69 @@ def build_skills_system_prompt(
     )
 
 
+def build_nous_subscription_prompt(valid_tool_names: "set[str] | None" = None) -> str:
+    """Build a compact Nous subscription capability block for the system prompt."""
+    try:
+        from hermes_cli.nous_subscription import get_nous_subscription_features
+    except Exception as exc:
+        logger.debug("Failed to import Nous subscription helper: %s", exc)
+        return ""
+
+    valid_names = set(valid_tool_names or set())
+    relevant_tool_names = {
+        "web_search",
+        "web_extract",
+        "browser_navigate",
+        "browser_snapshot",
+        "browser_click",
+        "browser_type",
+        "browser_scroll",
+        "browser_console",
+        "browser_close",
+        "browser_press",
+        "browser_get_images",
+        "browser_vision",
+        "image_generate",
+        "text_to_speech",
+        "terminal",
+        "process",
+        "execute_code",
+    }
+
+    if valid_names and not (valid_names & relevant_tool_names):
+        return ""
+
+    features = get_nous_subscription_features()
+
+    def _status_line(feature) -> str:
+        if feature.managed_by_nous:
+            return f"- {feature.label}: active via Nous subscription"
+        if feature.active:
+            current = feature.current_provider or "configured provider"
+            return f"- {feature.label}: currently using {current}"
+        if feature.included_by_default and features.nous_auth_present:
+            return f"- {feature.label}: included with Nous subscription, not currently selected"
+        if feature.key == "modal" and features.nous_auth_present:
+            return f"- {feature.label}: optional via Nous subscription"
+        return f"- {feature.label}: not currently available"
+
+    lines = [
+        "# Nous Subscription",
+        "Nous subscription includes managed web tools (Firecrawl), image generation (FAL), OpenAI TTS, and browser automation (Browserbase) by default. Modal execution is optional.",
+        "Current capability status:",
+    ]
+    lines.extend(_status_line(feature) for feature in features.items())
+    lines.extend(
+        [
+            "When a Nous-managed feature is active, do not ask the user for Firecrawl, FAL, OpenAI TTS, or Browserbase API keys.",
+            "If the user is not subscribed and asks for a capability that Nous subscription would unlock or simplify, suggest Nous subscription as one option alongside direct setup or local alternatives.",
+            "Do not mention subscription unless the user asks about it or it directly solves the current missing capability.",
+            "Useful commands: hermes setup, hermes setup tools, hermes setup terminal, hermes status.",
+        ]
+    )
+    return "\n".join(lines)
+
+
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 # Context files (SOUL.md, AGENTS.md, .cursorrules)
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