Refactor backend to support interface-definition driven model resources

- Introduce a new model structure for managing interface definitions and model resources, enhancing the backend's capability to handle various service integrations.
- Update the Makefile to reflect changes in database seeding and resource management commands.
- Remove the deprecated credentials management routes and replace them with a unified model registry API.
- Modify existing routes and schemas to align with the new model structure, ensuring seamless integration with the frontend.
- Enhance database seeding scripts to populate new model resources and their configurations.
- Update README documentation to reflect the new architecture and usage instructions for model resources and interface definitions.

backend/services/pipecat/xfyun_config.py

@@ -1,46 +1,7 @@
-"""Parse Xfyun's three-part credential from ProviderCredential.api_key."""
+"""Shared Xfyun service value normalization."""
 
 from __future__ import annotations
 
-import json
-from dataclasses import dataclass
-
-
-@dataclass(frozen=True)
-class XfyunCredential:
-    app_id: str
-    api_key: str
-    api_secret: str
-
-
-def parse_xfyun_credential(value: str) -> XfyunCredential:
-    """Accept JSON in the existing api_key column.
-
-    Example:
-        {"appId":"...","apiKey":"...","apiSecret":"..."}
-    """
-    try:
-        payload = json.loads(value)
-    except json.JSONDecodeError as exc:
-        raise ValueError(
-            'Xfyun API Key must be JSON: {"appId":"...","apiKey":"...","apiSecret":"..."}'
-        ) from exc
-
-    if not isinstance(payload, dict):
-        raise ValueError("Xfyun API Key JSON must be an object")
-
-    credential = XfyunCredential(
-        app_id=str(payload.get("appId") or payload.get("app_id") or "").strip(),
-        api_key=str(payload.get("apiKey") or payload.get("api_key") or "").strip(),
-        api_secret=str(
-            payload.get("apiSecret") or payload.get("api_secret") or ""
-        ).strip(),
-    )
-    if not credential.app_id or not credential.api_key or not credential.api_secret:
-        raise ValueError("Xfyun API Key JSON requires appId, apiKey, and apiSecret")
-    return credential
-
-
 def websocket_url(value: str, default: str) -> str:
     url = (value or default).strip()
     if url.startswith("https://"):
@@ -49,12 +10,6 @@ def websocket_url(value: str, default: str) -> str:
         return f"ws://{url.removeprefix('http://')}"
     return url
 
-
-def is_super_tts(model_id: str, api_url: str) -> bool:
-    model = model_id.lower().replace("-", "_")
-    return "super" in model or "/private/" in api_url.lower()
-
-
 def xfyun_language(value: str) -> str:
     normalized = (value or "zh_cn").lower().replace("-", "_")
     return {"zh": "zh_cn", "en": "en_us"}.get(normalized, normalized)