feat(storage): add local storage framework

backend/hermes/app/core/config.py

@@ -1,3 +1,6 @@
+from typing import Any
+
+from pydantic import model_validator
 from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
@@ -15,6 +18,9 @@ class Settings(BaseSettings):
     initial_admin_password: str | None = None
     initial_admin_first_name: str = ""
     initial_admin_last_name: str = ""
+    storage_provider: str = "local"
+    storage_base_path: str = "/data/storage"
+    storage_max_upload_mb: int = 50
     knowledge_storage_path: str = "/data/knowledge"
     knowledge_max_upload_mb: int = 50
 
@@ -23,5 +29,19 @@ class Settings(BaseSettings):
         extra="ignore",
     )
 
+    @model_validator(mode="before")
+    @classmethod
+    def apply_legacy_storage_settings(cls, values: Any) -> Any:
+        if not isinstance(values, dict):
+            return values
+
+        if "storage_base_path" not in values and "knowledge_storage_path" in values:
+            values["storage_base_path"] = values["knowledge_storage_path"]
+
+        if "storage_max_upload_mb" not in values and "knowledge_max_upload_mb" in values:
+            values["storage_max_upload_mb"] = values["knowledge_max_upload_mb"]
+
+        return values
+
 
 settings = Settings()