decomp DBCServer_Release and inspect/document database

AGENTS.md

@@ -15,6 +15,9 @@ All servers share one in-house framework (`Magi*`): server-kind enum,
 startup modes, XML option files and DB access via DBC servers. See
 [`docs/SHARED_FRAMEWORK.md`](docs/SHARED_FRAMEWORK.md) and check each new
 binary against it instead of re-deriving it.
+Config file definitions: [`docs/CONFIG.md`](docs/CONFIG.md). Database access
+path, RMI→stored-procedure map and schema: [`docs/DATABASE.md`](docs/DATABASE.md)
+(catalog dump in `decomp/schema/`, regenerate with `decomp/scripts/dump_schema.sh`).
 
 ## Target runtime environment
 
@@ -30,7 +33,9 @@ code.
   - `d3dx9` — DirectX 9 D3DX libraries
   - `d3dx10` — DirectX 10 D3DX libraries
 - **Database**: Microsoft SQL Server, supported up to **SQL Server 2019**.
-  Schema files for the backing databases are in `schema/`.
+  Schema files for the backing databases are in `schema/`. Note: the shipped
+  `.mdf` files are in SQL Server 2022 format (db version 957) and only attach
+  to 2022+.
 
 ## Directory layout