fix(keyword-detector): start ralph-loop when ulw keyword detected (#3113)

Plain 'ulw' keyword now starts the continuation loop via
ralphLoop.startLoop(), matching README promise. Wired through
create-core-hooks.ts and create-transform-hooks.ts.

TDD: 40 keyword-detector tests pass, 1239 hook tests pass, tsc clean.

Closes #3113

src/plugin/hooks/create-core-hooks.ts

@@ -36,6 +36,7 @@ export function createCoreHooks(args: {
     pluginConfig,
     isHookEnabled: (name) => isHookEnabled(name as HookName),
     safeHookEnabled,
+    ralphLoop: session.ralphLoop,
   })
 
   return {

src/plugin/hooks/create-transform-hooks.ts

@@ -1,5 +1,6 @@
 import type { OhMyOpenCodeConfig } from "../../config"
 import type { PluginContext } from "../types"
+import type { RalphLoopHook } from "../../hooks/ralph-loop"
 
 import {
   createClaudeCodeHooksHook,
@@ -26,8 +27,9 @@ export function createTransformHooks(args: {
   pluginConfig: OhMyOpenCodeConfig
   isHookEnabled: (hookName: string) => boolean
   safeHookEnabled?: boolean
+  ralphLoop?: RalphLoopHook | null
 }): TransformHooks {
-  const { ctx, pluginConfig, isHookEnabled } = args
+  const { ctx, pluginConfig, isHookEnabled, ralphLoop } = args
   const safeHookEnabled = args.safeHookEnabled ?? true
 
   const claudeCodeHooks = isHookEnabled("claude-code-hooks")
@@ -49,7 +51,7 @@ export function createTransformHooks(args: {
   const keywordDetector = isHookEnabled("keyword-detector")
     ? safeCreateHook(
         "keyword-detector",
-        () => createKeywordDetectorHook(ctx, contextCollector),
+        () => createKeywordDetectorHook(ctx, contextCollector, ralphLoop ?? undefined),
         { enabled: safeHookEnabled },
       )
     : null