feat(hooks): add grep-output-truncator for context-aware output limiting

src/hooks/index.ts

@@ -3,3 +3,4 @@ export { createContextWindowMonitorHook } from "./context-window-monitor"
 export { createSessionNotification } from "./session-notification"
 export { createSessionRecoveryHook } from "./session-recovery"
 export { createCommentCheckerHooks } from "./comment-checker"
+export { createGrepOutputTruncatorHook } from "./grep-output-truncator"