feat(2.0): DELETE /api/models/{id} (Eintrag + Gruppen-Mitgliedschaft entfernen)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

backend/services/llamaswap.py

@@ -186,3 +186,17 @@ def set_group(group: str, members: list[str], swap: bool = False, persist: bool
 
 def list_groups() -> dict:
     return read_config().get("groups") or {}
+
+
+def delete_model(model_id: str) -> bool:
+    """Entfernt einen Modell-Eintrag aus der config.yaml (und aus allen Gruppen)."""
+    cfg = read_config()
+    models = cfg.get("models") or {}
+    if model_id not in models:
+        return False
+    del models[model_id]
+    for g in (cfg.get("groups") or {}).values():
+        if isinstance(g, dict) and model_id in (g.get("members") or []):
+            g["members"] = [m for m in g["members"] if m != model_id]
+    write_config(cfg)
+    return True