feat: add FastAPI manager API compatibility baseline

main/manager-api-fastapi/app/schemas/config.py

@@ -0,0 +1,25 @@
+from __future__ import annotations
+
+from pydantic import field_validator
+
+from app.schemas.common import JavaModel
+
+
+def _not_blank(value: str) -> str:
+    if not value or not value.strip():
+        raise ValueError("must not be blank")
+    return value
+
+
+class AgentModelsRequest(JavaModel):
+    mac_address: str
+    client_id: str
+    selected_module: dict[str, str]
+
+    _validate_required = field_validator("mac_address", "client_id")(_not_blank)
+
+
+class CorrectWordsRequest(JavaModel):
+    mac_address: str
+
+    _validate_required = field_validator("mac_address")(_not_blank)