1 files changed, 16 insertions, 0 deletions

diff --git a/docs/SERVER_SETUP.md b/docs/SERVER_SETUP.md
index e2f3177..62d1a9c 100644
--- a/docs/SERVER_SETUP.md
+++ b/docs/SERVER_SETUP.md
@@ -69,6 +69,22 @@ On first contact the client prints the SPKI fingerprint and pins it. If you
 regenerate the server identity, the client will reject the new key; run
 `forget-host` in the client if the change is intentional.
 
+## Database
+
+The server creates `server.db` in the current directory on first use. It holds
+users, balances, and the per-game `plays` audit. The client keeps its own
+`client.db` for host fingerprints and stored credentials.
+
+During development, delete both files to reset users, balances, history, and
+trust:
+
+```sh
+rm -f server.db client.db
+```
+
+The `plays` schema is not auto-migrated from the old slots-only shape; a stale
+database must be removed.
+
 ## Windows
 
 `--init` shells out to `openssl`, so OpenSSL must be installed and on `PATH`