Update PUBLISH.md documentation

Author: vicsn

PUBLISH.md

@@ -1,13 +1,28 @@
 ## Publish instructions
 
-Replace `$VERSION` with the desired new version (e.g. `0.7.0`):
+The SDK NPM package contains binaries which work on both the latest `mainnet` and `testnet` releases.
+
+Set `SDK_TAG` to the desired new version (e.g. `v0.7.0`):
+
+When creating a `testnet` release:
+- download the latest `sdk` and `wasm` `mainnet` release to be packaged from https://github.com/ProvableHQ/sdk/releases
+- `git checkout testnet`
+- set `PREVIOUS_RELEASE=testnet`
+
+When creating a `mainnet` release:
+- download the latest `sdk` and `wasm` `testnet` release to be packaged from https://github.com/ProvableHQ/sdk/releases
+- `git checkout mainnet`
+- set `PREVIOUS_RELEASE=mainnet`
+
 
 ```bash
 yarn build:all
+mv latest_release/wasm/dist/${PREVIOUS_RELEASE} wasm/dist/${PREVIOUS_RELEASE}
+mv latest_release/sdk/dist/${PREVIOUS_RELEASE} sdk/dist/${PREVIOUS_RELEASE}
 npm login
-cd wasm && npm publish --access public
-cd ../sdk && npm publish --access public
-cd ../create-leo-app & npm publish --access public
-git tag vX.X.X
-git push origin vX.X.X
+npm deploy:wasm
+npm deploy:sdk
+npm deploy:create-leo-app
+git tag ${SDK_TAG}
+git push origin ${SDK_TAG}
 ```

README.md

@@ -19,6 +19,7 @@ several TypeScript & JavaScript libraries which provide the following functional
 
 All of this functionality is demonstrated on [Provable.tools](https://provable.tools).
 
+You will need `Node` version `22` or higher.
 
 The Provable SDK is divided into three TypeScript/JavaScript packages:
 

package.json

@@ -36,5 +36,8 @@
   "devDependencies": {
     "prettier": "3.4.2",
     "wasm-pack": "^0.13.1"
+  },
+  "dependencies": {
+    "rimraf": "^6.1.2"
   }
 }