feat(cli): add 'bunx oh-my-opencode run' command for persistent agent sessions (#228)

- Add new 'run' command using @opencode-ai/sdk to manage agent sessions
- Implement recursive descendant session checking (waits for ALL nested child sessions)
- Add completion conditions: all todos done + all descendant sessions idle
- Add SSE event processing for session state tracking
- Fix todo-continuation-enforcer to clean up session tracking
- Comprehensive test coverage with memory-safe test patterns

Unlike 'opencode run', this command ensures the agent completes all tasks
by recursively waiting for nested background agent sessions before exiting.

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

bun.lock

@@ -11,6 +11,7 @@
         "@code-yeongyu/comment-checker": "^0.6.0",
         "@openauthjs/openauth": "^0.4.3",
         "@opencode-ai/plugin": "^1.0.162",
+        "@opencode-ai/sdk": "^1.0.162",
         "commander": "^14.0.2",
         "hono": "^4.10.4",
         "picocolors": "^1.1.1",