diff --git a/README.md b/README.md
index 9fbbbec..3b90def 100644
--- a/README.md
+++ b/README.md
@@ -119,13 +119,19 @@ Public relay binary and relay-owned room state:
 - per-peer last-seen timestamps in relay room snapshots
 - peer leave cleanup for room membership and MAC indexes
 
-## Build
+## Build And Local Checks
 
 ```bash
-cargo check --workspace
+cargo fmt --check
+cargo test --workspace
+cargo clippy --workspace --all-targets -- -D warnings
+cargo build --release -p lanparty-relay -p lanparty-gateway
+git diff --check
 ```
 
-For the manual MVP end-to-end proof, see [TESTING.md](TESTING.md).
+These checks cover the local Rust code and the real client/relay/gateway
+session paths that can run without Windows TAP or LAN hardware. For the Windows
+client build and the manual MVP end-to-end proof, see [TESTING.md](TESTING.md).
 
 ## Relay