Add Trae IDE support

- Add trae.js transformer with full metadata support (same as Claude Code)
- Update build.js to include Trae in provider transformations
- Update README.md with Trae installation instructions
- Update DEVELOP.md with Trae transformer documentation

Trae uses ~/.trae-cn/builtin_skills/ for skills installation.

scripts/build.js

@@ -26,7 +26,8 @@ import {
   transformAgents,
   transformKiro,
   transformOpenCode,
-  transformPi
+  transformPi,
+  transformTrae
 } from './lib/transformers/index.js';
 import { createAllZips } from './lib/zip.js';
 import { execSync } from 'child_process';
@@ -149,7 +150,8 @@ function assembleUniversal(distDir, suffix = '') {
     { provider: 'agents', configDir: '.agents' },
     { provider: 'kiro', configDir: '.kiro' },
     { provider: 'opencode', configDir: '.opencode' },
-    { provider: 'pi', configDir: '.pi' }
+    { provider: 'pi', configDir: '.pi' },
+    { provider: 'trae', configDir: '.trae-cn' }
   ];
 
   for (const { provider, configDir } of providerMappings) {
@@ -177,6 +179,7 @@ This folder contains skills for all supported tools:
   .kiro/      → Kiro
   .opencode/  → OpenCode
   .pi/        → Pi
+  .trae-cn/   → Trae
 
 To install, copy the relevant folder(s) into your project root.
 These are hidden folders (dotfiles) — press Cmd+Shift+. in Finder to see them.
@@ -349,6 +352,7 @@ async function build() {
   transformKiro(skills, DIST_DIR, patterns);
   transformOpenCode(skills, DIST_DIR, patterns);
   transformPi(skills, DIST_DIR, patterns);
+  transformTrae(skills, DIST_DIR, patterns);
 
   // Transform for each provider (prefixed with i-)
   const prefixOptions = { prefix: 'i-', outputSuffix: '-prefixed' };
@@ -360,6 +364,7 @@ async function build() {
   transformKiro(skills, DIST_DIR, patterns, prefixOptions);
   transformOpenCode(skills, DIST_DIR, patterns, prefixOptions);
   transformPi(skills, DIST_DIR, patterns, prefixOptions);
+  transformTrae(skills, DIST_DIR, patterns, prefixOptions);
 
   // Assemble universal directory (unprefixed and prefixed)
   assembleUniversal(DIST_DIR);

scripts/lib/transformers/index.js

@@ -6,3 +6,4 @@ export { transformAgents } from './agents.js';
 export { transformKiro } from './kiro.js';
 export { transformOpenCode } from "./opencode.js";
 export { transformPi } from './pi.js';
+export { transformTrae } from './trae.js';

scripts/lib/transformers/trae.js

@@ -0,0 +1,67 @@
+import path from 'path';
+import { cleanDir, ensureDir, writeFile, generateYamlFrontmatter, replacePlaceholders, prefixSkillReferences } from '../utils.js';
+
+/**
+ * Trae Transformer (Skills Only)
+ *
+ * All skills output to .trae-cn/builtin_skills/{name}/SKILL.md
+ * Trae uses a similar format to Claude Code with full metadata support.
+ *
+ * @param {Array} skills - All skills (including user-invokable ones)
+ * @param {string} distDir - Distribution output directory
+ * @param {Object} patterns - Design patterns data (unused, kept for interface consistency)
+ * @param {Object} options - Optional settings
+ * @param {string} options.prefix - Prefix to add to user-invokable skill names (e.g., 'i-')
+ * @param {string} options.outputSuffix - Suffix for output directory (e.g., '-prefixed')
+ */
+export function transformTrae(skills, distDir, patterns = null, options = {}) {
+  const { prefix = '', outputSuffix = '' } = options;
+  const traeDir = path.join(distDir, `trae${outputSuffix}`);
+  const skillsDir = path.join(traeDir, '.trae-cn/builtin_skills');
+
+  cleanDir(traeDir);
+  ensureDir(skillsDir);
+
+  const allSkillNames = skills.map(s => s.name);
+  const commandNames = skills.filter(s => s.userInvokable).map(s => `${prefix}${s.name}`);
+  let refCount = 0;
+  for (const skill of skills) {
+    const skillName = `${prefix}${skill.name}`;
+    const skillDir = path.join(skillsDir, skillName);
+
+    const frontmatterObj = {
+      name: skillName,
+      description: skill.description,
+    };
+
+    if (skill.userInvokable) frontmatterObj['user-invokable'] = true;
+    if (skill.args && skill.args.length > 0) frontmatterObj.args = skill.args;
+    if (skill.license) frontmatterObj.license = skill.license;
+    if (skill.compatibility) frontmatterObj.compatibility = skill.compatibility;
+    if (skill.metadata) frontmatterObj.metadata = skill.metadata;
+    if (skill.allowedTools) frontmatterObj['allowed-tools'] = skill.allowedTools;
+
+    const frontmatter = generateYamlFrontmatter(frontmatterObj);
+    let skillBody = replacePlaceholders(skill.body, 'trae', commandNames);
+    if (prefix) skillBody = prefixSkillReferences(skillBody, prefix, allSkillNames);
+    const content = `${frontmatter}\n\n${skillBody}`;
+    const outputPath = path.join(skillDir, 'SKILL.md');
+    writeFile(outputPath, content);
+
+    if (skill.references && skill.references.length > 0) {
+      const refDir = path.join(skillDir, 'reference');
+      ensureDir(refDir);
+      for (const ref of skill.references) {
+        const refOutputPath = path.join(refDir, `${ref.name}.md`);
+        const refContent = replacePlaceholders(ref.content, 'trae');
+        writeFile(refOutputPath, refContent);
+        refCount++;
+      }
+    }
+  }
+
+  const userInvokableCount = skills.filter(s => s.userInvokable).length;
+  const refInfo = refCount > 0 ? ` (${refCount} reference files)` : '';
+  const prefixInfo = prefix ? ` [${prefix}prefixed]` : '';
+  console.log(`✓ Trae${prefixInfo}: ${skills.length} skills (${userInvokableCount} user-invokable)${refInfo}`);
+}