Add Agent capabilities and configurations across the application

- Extend the AssistantConfig model to include agent_interface_type, agent_values, and agent_secrets for enhanced agent management.
- Update ModelType to include "Agent" for broader capability support.
- Seed new agent models and configurations in the database for Dify, FastGPT, and OpenCode applications.
- Modify the Assistant routes to validate and handle agent capabilities.
- Implement agent resource resolution in the config resolver for runtime configuration.
- Enhance the interface catalog with agent-specific fields and definitions.
- Update frontend components to manage agent configurations, including form handling and state management for agent-related inputs.

backend/services/interface_catalog.py

@@ -34,6 +34,10 @@ OPENAI_COMMON = [
     field("apiUrl", "API URL", type_="url", required=True),
     field("apiKey", "API Key", group="secrets", type_="password", required=True),
 ]
+AGENT_COMMON = [
+    field("apiUrl", "API URL", type_="url", required=True),
+    field("apiKey", "API Key", group="secrets", type_="password", required=True),
+]
 XFYUN_AUTH = [
     field("apiUrl", "WebSocket URL", type_="url", required=True),
     field("appId", "App ID", group="secrets", type_="password", required=True),
@@ -78,6 +82,24 @@ INTERFACE_DEFINITIONS: list[dict] = [
         "capability": "Realtime",
         "fields": OPENAI_COMMON + [field("voice", "Voice")],
     },
+    {
+        "interface_type": "dify",
+        "name": "Dify Agent",
+        "capability": "Agent",
+        "fields": AGENT_COMMON,
+    },
+    {
+        "interface_type": "fastgpt",
+        "name": "FastGPT Agent",
+        "capability": "Agent",
+        "fields": AGENT_COMMON + [field("appId", "App ID", required=True)],
+    },
+    {
+        "interface_type": "opencode",
+        "name": "OpenCode Agent",
+        "capability": "Agent",
+        "fields": AGENT_COMMON,
+    },
     {
         "interface_type": "stepfun-realtime",
         "name": "StepFun StepAudio Realtime",