feat: add extension packing script and update build script

scripts/pack_crx.js

@@ -0,0 +1,110 @@
+import { execSync } from 'child_process';
+import fs from 'fs';
+import path from 'path';
+
+function findKey() {
+  // 1. Check if key provided via CLI
+  if (process.argv[3]) return process.argv[3];
+
+  // 2. Check local project directory (gitignored)
+  const localKey = path.join(process.cwd(), 'scripts', 'key.pem');
+  if (fs.existsSync(localKey)) return localKey;
+
+  // 3. Check common SSH key locations in ~/.ssh
+  const sshDir = path.join(process.env.HOME, '.ssh');
+  const commonKeys = ['id_rsa', 'id_ecdsa', 'id_ed25519'];
+
+  for (const keyName of commonKeys) {
+    const fullPath = path.join(sshDir, keyName);
+    if (fs.existsSync(fullPath)) return fullPath;
+  }
+
+  return null;
+}
+
+const KEY_PATH = findKey();
+const INPUT_SOURCE = process.argv[2] || path.join(process.cwd(), 'extension');
+const TEMP_DIR = path.join(process.cwd(), 'temp_extension_build');
+
+function pack() {
+  console.log('📦 Packing extension to CRX...');
+
+  if (!KEY_PATH) {
+    console.error('❌ Error: No private key found.');
+    console.log('Tried local scripts/key.pem and common ~/.ssh/id_* keys.');
+    console.log('You can provide a path manually: npm run pack-extension <source> <path/to/key>');
+    process.exit(1);
+  }
+
+  let extensionDir = INPUT_SOURCE;
+  let isTemp = false;
+
+  try {
+    // If input is a zip file, unzip it first
+    if (INPUT_SOURCE.endsWith('.zip')) {
+      console.log('🤐 Unzipping extension...');
+      if (fs.existsSync(TEMP_DIR)) fs.rmSync(TEMP_DIR, { recursive: true, force: true });
+      fs.mkdirSync(TEMP_DIR);
+      execSync(`unzip -o "${INPUT_SOURCE}" -d "${TEMP_DIR}"`, { stdio: 'pipe' });
+      extensionDir = TEMP_DIR;
+      isTemp = true;
+    }
+
+    // Resolve actual extension directory (handle subdirs in zip)
+    if (!fs.existsSync(path.join(extensionDir, 'manifest.json'))) {
+      const subdirs = fs.readdirSync(extensionDir).filter(f => fs.statSync(path.join(extensionDir, f)).isDirectory());
+      if (subdirs.length === 1 && fs.existsSync(path.join(extensionDir, subdirs[0], 'manifest.json'))) {
+        extensionDir = path.join(extensionDir, subdirs[0]);
+        console.log(`📂 Found manifest in subdirectory: ${extensionDir}`);
+      } else {
+        console.error(`❌ Error: manifest.json not found in ${extensionDir}`);
+        process.exit(1);
+      }
+    }
+
+    // Determine output filename
+    let outputName;
+    if (INPUT_SOURCE.endsWith('.zip')) {
+      outputName = path.basename(INPUT_SOURCE).replace('.zip', '.crx');
+    } else {
+      const manifest = JSON.parse(fs.readFileSync(path.join(extensionDir, 'manifest.json'), 'utf8'));
+      outputName = `tools-app-extension-v${manifest.version}.crx`;
+    }
+    const outputFull = path.join(process.cwd(), outputName);
+
+    // Get version for logging
+    const manifest = JSON.parse(fs.readFileSync(path.join(extensionDir, 'manifest.json'), 'utf8'));
+    const version = manifest.version;
+
+    console.log(`🔑 Using key: ${KEY_PATH}`);
+    console.log(`📂 Source: ${extensionDir} (v${version})`);
+    console.log(`🚀 Running crx3 via npx...`);
+
+    // Command: npx -y crx3 --key <key> --crx <output> <dir>
+    execSync(`npx -y crx3 --key "${KEY_PATH}" --crx "${outputFull}" "${extensionDir}"`, {
+      stdio: 'inherit'
+    });
+
+    // Cleanup any file that crx3 might have created automatically based on temp dir name
+    const unintendedFile = extensionDir + '.crx';
+    if (fs.existsSync(unintendedFile) && unintendedFile !== outputFull) {
+      fs.unlinkSync(unintendedFile);
+    }
+
+    console.log(`\n✅ Success! Extension packed to: ${outputFull}`);
+  } catch (error) {
+    console.error('\n❌ Failed to pack extension.');
+    if (error.message.includes('algorithm')) {
+      console.error('⚠️  Note: Chrome CRX format requires RSA or ECDSA (P-256) keys.');
+    } else {
+      console.error('Error details:', error.message);
+    }
+    process.exit(1);
+  } finally {
+    if (isTemp && fs.existsSync(TEMP_DIR)) {
+      fs.rmSync(TEMP_DIR, { recursive: true, force: true });
+    }
+  }
+}
+
+pack();