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>

assets/oh-my-opencode.schema.json

@@ -60,7 +60,8 @@
           "non-interactive-env",
           "interactive-bash-session",
           "empty-message-sanitizer",
-          "thinking-block-validator"
+          "thinking-block-validator",
+          "ralph-loop"
         ]
       }
     },
@@ -1511,6 +1512,24 @@
     },
     "auto_update": {
       "type": "boolean"
+    },
+    "ralph_loop": {
+      "type": "object",
+      "properties": {
+        "enabled": {
+          "default": false,
+          "type": "boolean"
+        },
+        "default_max_iterations": {
+          "default": 100,
+          "type": "number",
+          "minimum": 1,
+          "maximum": 1000
+        },
+        "state_dir": {
+          "type": "string"
+        }
+      }
     }
   }
 }