fix(python-runtime): fall back to node-pty prebuild

scripts/build-exe-for-python-sdk-native-pty.spec.ts

@@ -0,0 +1,49 @@
+import { mkdirSync, mkdtempSync, rmSync, writeFileSync } from 'node:fs'
+import { tmpdir } from 'node:os'
+import { dirname, join } from 'node:path'
+import { afterEach, describe, expect, it } from 'vitest'
+import { resolveLinuxNodePtyAddon } from './build-exe-for-python-sdk-native-pty.ts'
+
+const roots: string[] = []
+
+afterEach(() => {
+  for (const root of roots.splice(0)) rmSync(root, { recursive: true, force: true })
+})
+
+describe('resolveLinuxNodePtyAddon', () => {
+  it('prefers the manylinux build produced by the release workflow', () => {
+    const root = temporaryPackage()
+    const built = createAddon(root, 'build', 'Release', 'pty.node')
+    createAddon(root, 'prebuilds', 'linux-x64', 'pty.node')
+
+    expect(resolveLinuxNodePtyAddon(root, 'x64')).toBe(built)
+  })
+
+  it('uses the target prebuild after an ordinary beta install', () => {
+    const root = temporaryPackage()
+    const prebuilt = createAddon(root, 'prebuilds', 'linux-arm64', 'pty.node')
+
+    expect(resolveLinuxNodePtyAddon(root, 'arm64')).toBe(prebuilt)
+  })
+
+  it('reports both expected locations when no addon is installed', () => {
+    const root = temporaryPackage()
+
+    expect(() => resolveLinuxNodePtyAddon(root, 'x64')).toThrow(
+      `node-pty addon is absent from both ${join(root, 'build', 'Release', 'pty.node')} and ${join(root, 'prebuilds', 'linux-x64', 'pty.node')}`,
+    )
+  })
+})
+
+function temporaryPackage(): string {
+  const root = mkdtempSync(join(tmpdir(), 'dsh-node-pty-addon-'))
+  roots.push(root)
+  return root
+}
+
+function createAddon(root: string, ...segments: string[]): string {
+  const path = join(root, ...segments)
+  mkdirSync(dirname(path), { recursive: true })
+  writeFileSync(path, '')
+  return path
+}