replace main with lightweight memory gateway

core/config.py

@@ -0,0 +1,40 @@
+from __future__ import annotations
+
+import os
+from dataclasses import dataclass
+from pathlib import Path
+
+
+_PROJECT_ROOT = Path(__file__).resolve().parents[1]
+
+
+@dataclass(frozen=True)
+class GatewayConfig:
+    everos_base_url: str = "http://127.0.0.1:8000"
+    database_path: Path = _PROJECT_ROOT / "data" / "memory_gateway.sqlite3"
+    storage_dir: Path = _PROJECT_ROOT / "data" / "storage"
+    resource_search_batch_size: int = 50
+
+    @classmethod
+    def from_env(cls) -> GatewayConfig:
+        return cls(
+            everos_base_url=os.environ.get(
+                "EVEROS_BASE_URL",
+                "http://127.0.0.1:8000",
+            ).rstrip("/"),
+            database_path=Path(
+                os.environ.get(
+                    "MEMORY_GATEWAY_DB_PATH",
+                    str(_PROJECT_ROOT / "data" / "memory_gateway.sqlite3"),
+                )
+            ),
+            storage_dir=Path(
+                os.environ.get(
+                    "MEMORY_GATEWAY_STORAGE_DIR",
+                    str(_PROJECT_ROOT / "data" / "storage"),
+                )
+            ),
+            resource_search_batch_size=int(
+                os.environ.get("MEMORY_GATEWAY_RESOURCE_SEARCH_BATCH_SIZE", "50")
+            ),
+        )