feat(cli): add interactive area build menu

scripts/interactive-build.js

@@ -0,0 +1,49 @@
+#!/usr/bin/env node
+"use strict";
+
+const fs = require("fs");
+const path = require("path");
+const { spawnSync } = require("child_process");
+const { STAGES, resolveStages, canonicalStages } = require("./lib/build-stages");
+
+const repoRoot = path.resolve(__dirname, "..");
+
+function areaConfigs() {
+  return fs.readdirSync(path.join(repoRoot, "config", "areas"))
+    .filter((file) => file.endsWith(".json"))
+    .sort()
+    .map((file) => path.join(repoRoot, "config", "areas", file));
+}
+
+function requireTty(input = process.stdin, output = process.stdout) {
+  if (!input.isTTY || !output.isTTY) throw new Error("Interactive build requires a TTY. Use npm run build:area -- --config <area> --stages <stages> instead.");
+}
+
+async function main() {
+  requireTty();
+  const configs = areaConfigs();
+  if (!configs.length) throw new Error("No area configs found in config/areas.");
+  const { select, checkbox } = await import("@inquirer/prompts");
+  const config = await select({
+    message: "Choose an area",
+    choices: configs.map((file) => ({ name: path.basename(file, ".json"), value: file })),
+  });
+  const chosen = await checkbox({
+    message: "Choose build stages",
+    choices: STAGES.map((stage) => ({ name: `${stage.id} - ${stage.description}`, value: stage.id })),
+    required: true,
+  });
+  if (!chosen.length) throw new Error("Choose at least one build stage.");
+  const stages = canonicalStages(resolveStages({}, chosen));
+  console.log(`Area: ${path.basename(config)}`);
+  console.log(`Stages: ${stages.join(", ")}`);
+  const result = spawnSync(process.execPath, [path.join(__dirname, "build-area.js"), "--config", config, "--stages", stages.join(",")], { stdio: "inherit" });
+  if (result.error) throw result.error;
+  process.exitCode = result.status || 0;
+}
+
+if (require.main === module) main().catch((error) => {
+  if (error.name !== "ExitPromptError") console.error(`Error: ${error.message}`);
+  process.exitCode = error.name === "ExitPromptError" ? 0 : 1;
+});
+module.exports = { areaConfigs, requireTty };