Bootstrap OpenBitdo clean-room SDK and reliability milestone

sdk/README.md

@@ -0,0 +1,30 @@
+# OpenBitdo SDK
+
+`bitdo_proto` and `bitdoctl` provide the clean-room protocol core and CLI.
+
+## Build
+```bash
+cargo build --workspace
+```
+
+## Test
+```bash
+cargo test --workspace --all-targets
+```
+
+## Guard
+```bash
+./scripts/cleanroom_guard.sh
+```
+
+## Hardware smoke report
+```bash
+./scripts/run_hardware_smoke.sh
+```
+
+## CLI examples
+```bash
+cargo run -p bitdoctl -- --mock list
+cargo run -p bitdoctl -- --mock --json --pid 24585 identify
+cargo run -p bitdoctl -- --mock --json --pid 24585 diag probe
+```