feat: add Ralph Loop self-referential development loop (#337)

* feat(config): add RalphLoopConfigSchema and hook name

- Add ralph-loop to HookNameSchema enum
- Add RalphLoopConfigSchema with enabled, default_max_iterations, state_dir
- Add ralph_loop field to OhMyOpenCodeConfigSchema
- Export RalphLoopConfig type

* feat(ralph-loop): add hook directory structure with constants and types

- Add constants.ts with HOOK_NAME, DEFAULT_STATE_FILE, COMPLETION_TAG_PATTERN
- Add types.ts with RalphLoopState and RalphLoopOptions interfaces
- Export RalphLoopConfig from config/index.ts

* feat(ralph-loop): add storage module for markdown state file management

- Implement readState/writeState/clearState/incrementIteration
- Use YAML frontmatter format for state persistence
- Support custom state file paths via config

* feat(ralph-loop): implement main hook with session.idle handler

- Add createRalphLoopHook factory with event handler
- Implement startLoop, cancelLoop, getState API
- Detect completion promise in transcript
- Auto-continue with iteration tracking
- Handle max iterations limit
- Show toast notifications for status updates
- Support session recovery and cleanup

* test(ralph-loop): add comprehensive BDD-style tests

- Add 17 test cases covering storage, hook lifecycle, iteration
- Test completion detection, cancellation, recovery, session cleanup
- Fix storage.ts to handle YAML value parsing correctly
- Use BDD #given/#when/#then comments per project convention

* feat(builtin-commands): add ralph-loop and cancel-ralph commands

* feat(ralph-loop): register hook in main plugin

* docs: add Ralph Loop feature to all README files

* chore: regenerate JSON schema with ralph-loop config

* feat(ralph-loop): change state file path from .opencode to .sisyphus

🤖 Generated with assistance of https://github.com/code-yeongyu/oh-my-opencode

* feat(ralph-loop): integrate ralph-loop and cancel-ralph command handlers into plugin hooks

- Add chat.message hook to detect and start ralph-loop or cancel-ralph templates
- Add slashcommand hook to handle /ralph-loop and /cancel-ralph commands
- Support custom --max-iterations and --completion-promise options

🤖 Generated with assistance of https://github.com/code-yeongyu/oh-my-opencode

---------

Co-authored-by: sisyphus-dev-ai <sisyphus-dev-ai@users.noreply.github.com>

README.zh-cn.md

@@ -639,6 +639,12 @@ Oh My OpenCode 会扫这些地方：
 
 Agent 爽了，你自然也爽。但我还想直接让你爽。
 
+- **Ralph 循环**：干到完事才停的自参照开发循环。灵感来自 Anthropic 的 Ralph Wiggum 插件。**支持所有编程语言。**
+  - `/ralph-loop "搞个 REST API"` 开始，Agent 就一直干
+  - 检测到 `<promise>DONE</promise>` 就算完事
+  - 没输出完成标记就停了？自动续上
+  - 停止条件：检测到完成、达到最大迭代（默认 100 次）、或 `/cancel-ralph`
+  - `oh-my-opencode.json` 配置：`{ "ralph_loop": { "enabled": true, "default_max_iterations": 100 } }`
 - **关键词检测器**：看到关键词自动切模式：
   - `ultrawork` / `ulw`：并行 Agent 编排，火力全开
   - `search` / `find` / `찾아` / `検索`：explore/librarian 并行搜索，掘地三尺
@@ -872,7 +878,7 @@ Sisyphus Agent 也能自定义：
 }
 ```
 
-可关的 hook：`todo-continuation-enforcer`、`context-window-monitor`、`session-recovery`、`session-notification`、`comment-checker`、`grep-output-truncator`、`tool-output-truncator`、`directory-agents-injector`、`directory-readme-injector`、`empty-task-response-detector`、`think-mode`、`anthropic-context-window-limit-recovery`、`rules-injector`、`background-notification`、`auto-update-checker`、`startup-toast`、`keyword-detector`、`agent-usage-reminder`、`non-interactive-env`、`interactive-bash-session`、`empty-message-sanitizer`、`preemptive-compaction`、`compaction-context-injector`、`thinking-block-validator`、`claude-code-hooks`
+可关的 hook：`todo-continuation-enforcer`、`context-window-monitor`、`session-recovery`、`session-notification`、`comment-checker`、`grep-output-truncator`、`tool-output-truncator`、`directory-agents-injector`、`directory-readme-injector`、`empty-task-response-detector`、`think-mode`、`anthropic-context-window-limit-recovery`、`rules-injector`、`background-notification`、`auto-update-checker`、`startup-toast`、`keyword-detector`、`agent-usage-reminder`、`non-interactive-env`、`interactive-bash-session`、`empty-message-sanitizer`、`preemptive-compaction`、`compaction-context-injector`、`thinking-block-validator`、`claude-code-hooks`、`ralph-loop`
 
 **关于 `auto-update-checker` 和 `startup-toast`**: `startup-toast` hook 是 `auto-update-checker` 的子功能。若想保持更新检查但只禁用启动提示通知，在 `disabled_hooks` 中添加 `"startup-toast"`。若要禁用所有更新检查功能（包括提示），添加 `"auto-update-checker"`。