feat: add headless-cli skill and meta prompts/skills

Headless CLI Skill:
- SKILL.md with YOLO and safe mode commands
- References for Gemini/Claude/Codex CLI
- Examples for batch translation, code review, multi-model

Meta Prompts:
- alpha-generator.md (prompt generator)
- omega-optimizer.md (prompt optimizer)
- prompt-template.md (standardized template)

Meta Skills:
- SKILL.md for creating/optimizing skills
- skill-template.md (standardized template)

i18n/zh/skills/headless-cli/references/index.md

@@ -0,0 +1,13 @@
+# Headless CLI References
+
+## 目录
+
+- [gemini-cli.md](./gemini-cli.md) - Gemini CLI 详细参数
+- [claude-cli.md](./claude-cli.md) - Claude Code CLI 参数
+- [codex-cli.md](./codex-cli.md) - Codex CLI 参数
+
+## 外部链接
+
+- [Gemini CLI GitHub](https://github.com/google-gemini/gemini-cli)
+- [Claude Code Docs](https://docs.anthropic.com/claude-code)
+- [Codex CLI Docs](https://platform.openai.com/docs/codex)