fix: add explicit hermes-api-server toolset for API server platform (#3304)

The API server adapter was creating agents without specifying
enabled_toolsets, causing ALL tools to load — including clarify,
send_message, and text_to_speech which don't work without interactive
callbacks or gateway dispatch.

Changes:
- toolsets.py: Add hermes-api-server toolset (core tools minus clarify,
  send_message, text_to_speech)
- api_server.py: Resolve toolsets from config.yaml platform_toolsets
  via _get_platform_tools() — same path as all other gateway platforms.
  Falls back to hermes-api-server default when no override configured.
- tools_config.py: Add api_server to PLATFORMS dict so users can
  customize via 'hermes tools' or platform_toolsets.api_server in
  config.yaml
- 12 tests covering toolset definition, config resolution, and
  user override

Reported by thatwolfieguy on Discord.

toolsets.py

@@ -248,6 +248,42 @@ TOOLSETS = {
         ],
         "includes": []
     },
+
+    "hermes-api-server": {
+        "description": "OpenAI-compatible API server — full agent tools accessible via HTTP (no interactive UI tools like clarify or send_message)",
+        "tools": [
+            # Web
+            "web_search", "web_extract",
+            # Terminal + process management
+            "terminal", "process",
+            # File manipulation
+            "read_file", "write_file", "patch", "search_files",
+            # Vision + image generation
+            "vision_analyze", "image_generate",
+            # MoA
+            "mixture_of_agents",
+            # Skills
+            "skills_list", "skill_view", "skill_manage",
+            # Browser automation
+            "browser_navigate", "browser_snapshot", "browser_click",
+            "browser_type", "browser_scroll", "browser_back",
+            "browser_press", "browser_close", "browser_get_images",
+            "browser_vision", "browser_console",
+            # Planning & memory
+            "todo", "memory",
+            # Session history search
+            "session_search",
+            # Code execution + delegation
+            "execute_code", "delegate_task",
+            # Cronjob management
+            "cronjob",
+            # Home Assistant smart home control (gated on HASS_TOKEN via check_fn)
+            "ha_list_entities", "ha_get_state", "ha_list_services", "ha_call_service",
+            # Honcho memory tools (gated on honcho being active via check_fn)
+            "honcho_context", "honcho_profile", "honcho_search", "honcho_conclude",
+        ],
+        "includes": []
+    },
     
     "hermes-cli": {
         "description": "Full interactive CLI toolset - all default tools plus cronjob management",