refactor(tooling): [MOD-02] split library build and development into typed modules

scripts/library/vendor.d.ts

@@ -0,0 +1,22 @@
+// Only the installed APIs used by library tooling; not general SDK declarations.
+declare module 'prompts' {
+  export default function prompts(question: {
+    type: 'select'
+    name: 'value'
+    message: string
+    choices: { title: string, value: string }[]
+  }): Promise<{ value?: string }>
+}
+
+declare module 'servor' {
+  export default function servor(options: {
+    root: string
+    fallback: string
+    reload: boolean
+    port: number
+  }): Promise<{ url: string }>
+}
+
+declare module 'servor/utils/openBrowser.js' {
+  export default function openBrowser(url: string): true | undefined
+}