OpenCode Desktop app (#5044)

Co-authored-by: Adam <2363879+adamdotdevin@users.noreply.github.com>

packages/tauri/scripts/predev.ts

@@ -0,0 +1,17 @@
+import * as fs from "node:fs/promises"
+import { $ } from "bun"
+
+import { copyBinaryToSidecarFolder, getCurrentSidecar } from "./utils"
+
+const RUST_TARGET = Bun.env.TAURI_ENV_TARGET_TRIPLE
+
+const sidecarConfig = getCurrentSidecar(RUST_TARGET)
+
+const binaryPath = `../opencode/dist/${sidecarConfig.ocBinary}/bin/opencode`
+
+if (!(await fs.exists(binaryPath))) {
+  console.log("opencode binary not found, building...")
+  await $`cd ../opencode && bun run build --single`
+}
+
+await copyBinaryToSidecarFolder(binaryPath, RUST_TARGET)