fix: align whisper-server id allocation

codai/admin/routes.py

@@ -61,6 +61,8 @@ def _next_whisper_server_model_id(audio_models) -> str:
     for model in audio_models or []:
         if not isinstance(model, dict):
             continue
+        if model.get("backend") != "whisper-server":
+            continue
         match = re.fullmatch(r"whisper(\d+)", str(model.get("id") or "").strip())
         if match:
             used_suffixes.add(int(match.group(1)))
@@ -1295,7 +1297,11 @@ async def api_model_configure(request: Request, username: str = Depends(require_
         if gpu_device < 0:
             raise HTTPException(status_code=400, detail="gpu_device must be >= 0")
         for existing in config_manager.models_data.get("audio_models", []):
-            if isinstance(existing, dict) and existing.get("id") == model_id:
+            if (
+                isinstance(existing, dict)
+                and existing.get("backend") == "whisper-server"
+                and existing.get("id") == model_id
+            ):
                 raise HTTPException(status_code=409, detail=f"whisper-server model '{model_id}' already exists")
         entry = {
             "id": model_id,

tests/test_whisper_server_local_models.py

@@ -211,7 +211,36 @@ def test_model_configure_defaults_missing_whisper_server_model_id_skips_non_whis
     )
 
     assert response.status_code == 200
-    assert cfg.models_data["audio_models"][-1]["id"] == "whisper1"
+    assert cfg.models_data["audio_models"][-1]["id"] == "whisper0"
+
+    app.dependency_overrides.clear()
+
+
+def test_model_configure_allows_whisper_server_id_coexistence_with_other_audio_backends(monkeypatch, tmp_path):
+    from codai.admin import routes
+
+    cfg = _build_config(tmp_path)
+    cfg.models_data["audio_models"] = [
+        {"id": "whisper0", "backend": "faster-whisper"},
+    ]
+    monkeypatch.setattr(routes, "config_manager", cfg, raising=False)
+    app, client = _build_admin_test_client(routes)
+    response = client.post(
+        "/admin/api/model-configure",
+        json={
+            "model_id": "whisper0",
+            "backend": "whisper-server",
+            "server_path": "/usr/local/bin/whisper-server",
+            "model_path": "/models/ggml-base.bin",
+            "port": 8744,
+            "gpu_device": 0,
+            "load_mode": "on-request",
+        },
+    )
+
+    assert response.status_code == 200
+    assert [m["backend"] for m in cfg.models_data["audio_models"]] == ["faster-whisper", "whisper-server"]
+    assert cfg.models_data["audio_models"][-1]["id"] == "whisper0"
 
     app.dependency_overrides.clear()