feat: switch setup wizard to @clack/prompts for styled terminal UI

Replaces hand-rolled readline prompts with clack's styled components:
spinners, select menus, confirm prompts, notes, intro/outro banners.
Handles TTY detection internally — no more /dev/tty workarounds.

Author: ualtinok

bun.lock

@@ -41,6 +41,7 @@
     "prepublishOnly": "bun run build"
   },
   "dependencies": {
+    "@clack/prompts": "^1.1.0",
     "@huggingface/transformers": "^3.5.1",
     "@opencode-ai/plugin": "^1.2.26",
     "ai-tokenizer": "^1.0.6",

package.json

@@ -1,77 +1,44 @@
-import { createReadStream } from "node:fs";
-import { createInterface } from "node:readline";
-
-function getInput(): NodeJS.ReadableStream {
-    // When piped (curl | bash), stdin is consumed by the pipe.
-    // Open /dev/tty directly to read from the actual terminal.
-    if (!process.stdin.isTTY) {
-        try {
-            return createReadStream("/dev/tty");
-        } catch {
-            // Windows or no TTY available — fall back to stdin
-        }
+import {
+    confirm as clackConfirm,
+    intro,
+    isCancel,
+    log,
+    note,
+    outro,
+    select,
+    spinner,
+} from "@clack/prompts";
+
+export { intro, log, note, outro, spinner };
+
+function handleCancel(value: unknown): void {
+    if (isCancel(value)) {
+        log.warn("Setup cancelled.");
+        process.exit(0);
     }
-    return process.stdin;
-}
-
-const rl = createInterface({ input: getInput(), output: process.stdout });
-
-function ask(question: string): Promise<string> {
-    return new Promise((resolve) => {
-        rl.question(question, (answer) => resolve(answer.trim()));
-    });
-}
-
-export function closePrompts(): void {
-    rl.close();
 }
 
 export async function confirm(message: string, defaultYes = true): Promise<boolean> {
-    const hint = defaultYes ? "Y/n" : "y/N";
-    const answer = await ask(`  ${message} [${hint}] `);
-    if (answer === "") return defaultYes;
-    return answer.toLowerCase().startsWith("y");
+    const result = await clackConfirm({
+        message,
+        initialValue: defaultYes,
+    });
+    handleCancel(result);
+    return result as boolean;
 }
 
 export async function selectOne(
     message: string,
     options: { label: string; value: string; recommended?: boolean }[],
 ): Promise<string> {
-    console.log(`  ${message}`);
-    console.log("");
-    for (let i = 0; i < options.length; i++) {
-        const opt = options[i];
-        const rec = opt.recommended ? " (recommended)" : "";
-        const num = `${i + 1}`.padStart(3);
-        console.log(`  ${num}) ${opt.label}${rec}`);
-    }
-    console.log("");
-
-    while (true) {
-        const answer = await ask("  Enter number: ");
-        const idx = Number.parseInt(answer, 10) - 1;
-        if (idx >= 0 && idx < options.length) {
-            return options[idx].value;
-        }
-        console.log("  Invalid selection, try again.");
-    }
-}
-
-export async function selectMultiple(
-    message: string,
-    options: { label: string; value: string }[],
-): Promise<string[]> {
-    console.log(`  ${message}`);
-    console.log("");
-    for (let i = 0; i < options.length; i++) {
-        const num = `${i + 1}`.padStart(3);
-        console.log(`  ${num}) ${options[i].label}`);
-    }
-    console.log("");
-
-    const answer = await ask("  Enter numbers (comma-separated, or 'none'): ");
-    if (answer.toLowerCase() === "none" || answer === "") return [];
-
-    const indices = answer.split(",").map((s) => Number.parseInt(s.trim(), 10) - 1);
-    return indices.filter((i) => i >= 0 && i < options.length).map((i) => options[i].value);
+    const result = await select({
+        message,
+        options: options.map((opt) => ({
+            label: opt.recommended ? `${opt.label} (recommended)` : opt.label,
+            value: opt.value,
+            hint: opt.recommended ? "recommended" : undefined,
+        })),
+    });
+    handleCancel(result);
+    return result as string;
 }