ci(tui): cross-build releases on free runners

tui/scripts/prepare-target.ts

@@ -0,0 +1,41 @@
+import { join } from "node:path"
+
+const packagesByTarget: Record<string, string[]> = {
+  "darwin-arm64": ["@opentui/core-darwin-arm64"],
+  "darwin-x64": ["@opentui/core-darwin-x64"],
+  "linux-arm64": ["@opentui/core-linux-arm64", "@opentui/core-linux-arm64-musl"],
+  "linux-x64": ["@opentui/core-linux-x64", "@opentui/core-linux-x64-musl"],
+  "win32-x64": ["@opentui/core-win32-x64"],
+}
+
+const target = process.argv[2]
+if (!target) throw new Error("target is required")
+const packages = packagesByTarget[target]
+if (!packages) throw new Error(`unsupported target: ${target}`)
+
+const root = join(import.meta.dir, "..")
+const manifest = await Bun.file(join(root, "package.json")).json()
+const version = manifest.dependencies?.["@opentui/core"]
+if (typeof version !== "string" || !/^\d+\.\d+\.\d+$/.test(version)) {
+  throw new Error("@opentui/core must use an exact version")
+}
+
+const npm = process.platform === "win32" ? "npm.cmd" : "npm"
+const result = Bun.spawnSync(
+  [
+    npm,
+    "install",
+    "--no-save",
+    "--ignore-scripts",
+    "--force",
+    "--package-lock=false",
+    ...packages.map((name) => `${name}@${version}`),
+  ],
+  {
+    cwd: root,
+    stdout: "inherit",
+    stderr: "inherit",
+  },
+)
+
+if (result.exitCode !== 0) process.exit(result.exitCode)