add openspec CLI

extensions/openspec/scripts/postinstall.js

@@ -0,0 +1,83 @@
+#!/usr/bin/env node
+
+/**
+ * Postinstall script that hints about shell completions
+ *
+ * Completion installation is opt-in: the user must run
+ * `openspec completion install` explicitly. This script only
+ * prints a one-line tip after npm install.
+ *
+ * The tip is suppressed when:
+ * - CI=true environment variable is set
+ * - OPENSPEC_NO_COMPLETIONS=1 environment variable is set
+ * - dist/ directory doesn't exist (dev setup scenario)
+ *
+ * The script never fails npm install - all errors are caught and handled gracefully.
+ */
+
+import { promises as fs } from 'fs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+/**
+ * Check if we should skip installation
+ */
+function shouldSkipInstallation() {
+  // Skip in CI environments
+  if (process.env.CI === 'true' || process.env.CI === '1') {
+    return { skip: true, reason: 'CI environment detected' };
+  }
+
+  // Skip if user opted out
+  if (process.env.OPENSPEC_NO_COMPLETIONS === '1') {
+    return { skip: true, reason: 'OPENSPEC_NO_COMPLETIONS=1 set' };
+  }
+
+  return { skip: false };
+}
+
+/**
+ * Check if dist/ directory exists
+ */
+async function distExists() {
+  const distPath = path.join(__dirname, '..', 'dist');
+  try {
+    const stat = await fs.stat(distPath);
+    return stat.isDirectory();
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * Main function
+ */
+async function main() {
+  try {
+    // Check if we should skip
+    const skipCheck = shouldSkipInstallation();
+    if (skipCheck.skip) {
+      // Silent skip - no output
+      return;
+    }
+
+    // Check if dist/ exists (skip silently if not - expected during dev setup)
+    if (!(await distExists())) {
+      return;
+    }
+
+    // Completions are opt-in — just print a hint
+    console.log(`\nTip: Run 'openspec completion install' for shell completions`);
+  } catch (error) {
+    // Fail gracefully - never break npm install
+  }
+}
+
+// Run main and handle any unhandled errors
+main().catch(() => {
+  // Silent failure - never break npm install
+  process.exit(0);
+});