Add /ulw-loop command for ultrawork mode loop (#867)

* feat(ralph-loop): add ultrawork field to RalphLoopState

* feat(ralph-loop): persist ultrawork field in storage

* feat(ralph-loop): accept ultrawork option in startLoop

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

* feat(ralph-loop): prepend ultrawork keyword when mode active

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

* feat(ralph-loop): custom toast for ultrawork mode

* feat(ralph-loop): add /ulw-loop command for ultrawork mode

* fix(ralph-loop): add non-null assertion for type safety

* fix(ralph-loop): mirror argument parsing in ulw-loop handler

- Parse quoted prompts and strip flags from task text
- Support --max-iterations and --completion-promise options
- Add default prompt for empty input
- Fixes behavior inconsistency with /ralph-loop

---------

Co-authored-by: justsisyphus <sisyphus-dev-ai@users.noreply.github.com>
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/hooks/ralph-loop/storage.ts

@@ -48,6 +48,7 @@ export function readState(directory: string, customPath?: string): RalphLoopStat
       started_at: stripQuotes(data.started_at) || new Date().toISOString(),
       prompt: body.trim(),
       session_id: data.session_id ? stripQuotes(data.session_id) : undefined,
+      ultrawork: data.ultrawork === true || data.ultrawork === "true" ? true : undefined,
     }
   } catch {
     return null
@@ -68,13 +69,14 @@ export function writeState(
     }
 
     const sessionIdLine = state.session_id ? `session_id: "${state.session_id}"\n` : ""
+    const ultraworkLine = state.ultrawork !== undefined ? `ultrawork: ${state.ultrawork}\n` : ""
     const content = `---
 active: ${state.active}
 iteration: ${state.iteration}
 max_iterations: ${state.max_iterations}
 completion_promise: "${state.completion_promise}"
 started_at: "${state.started_at}"
-${sessionIdLine}---
+${sessionIdLine}${ultraworkLine}---
 ${state.prompt}
 `