chore: better local dev with stainless script

packages/tui/sdk/CONTRIBUTING.md

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+## Setting up the environment
+
+To set up the repository, run:
+
+```sh
+$ ./scripts/bootstrap
+$ ./scripts/build
+```
+
+This will install all the required dependencies and build the SDK.
+
+You can also [install go 1.18+ manually](https://go.dev/doc/install).
+
+## Modifying/Adding code
+
+Most of the SDK is generated code. Modifications to code will be persisted between generations, but may
+result in merge conflicts between manual patches and changes from the generator. The generator will never
+modify the contents of the `lib/` and `examples/` directories.
+
+## Adding and running examples
+
+All files in the `examples/` directory are not modified by the generator and can be freely edited or added to.
+
+```go
+# add an example to examples/<your-example>/main.go
+
+package main
+
+func main() {
+  // ...
+}
+```
+
+```sh
+$ go run ./examples/<your-example>
+```
+
+## Using the repository from source
+
+To use a local version of this library from source in another project, edit the `go.mod` with a replace
+directive. This can be done through the CLI with the following:
+
+```sh
+$ go mod edit -replace github.com/sst/opencode-sdk-go=/path/to/opencode-sdk-go
+```
+
+## Running tests
+
+Most tests require you to [set up a mock server](https://github.com/stoplightio/prism) against the OpenAPI spec to run the tests.
+
+```sh
+# you will need npm installed
+$ npx prism mock path/to/your/openapi.yml
+```
+
+```sh
+$ ./scripts/test
+```
+
+## Formatting
+
+This library uses the standard gofmt code formatter:
+
+```sh
+$ ./scripts/format
+```