fix: Format and lint issues

- Remove unused imports (vi, ToolHookEvent) from test file
- Apply oxfmt formatting

src/infra/agent-hook-bridge.test.ts

@@ -1,9 +1,8 @@
-import { describe, it, expect, beforeEach, afterEach, vi } from "vitest";
+import { describe, it, expect, beforeEach, afterEach } from "vitest";
 import {
   startAgentHookBridge,
   stopAgentHookBridge,
   type SessionMeta,
-  type ToolHookEvent,
 } from "./agent-hook-bridge.js";
 import { emitAgentEvent } from "./agent-events.js";
 import {

src/infra/agent-hook-bridge.ts

@@ -87,9 +87,7 @@ function parseSessionMeta(sessionKey: string | undefined | null): SessionMeta {
 /**
  * Type guard for tool event data
  */
-function isToolEventData(
-  data: Record<string, unknown> | undefined,
-): data is {
+function isToolEventData(data: Record<string, unknown> | undefined): data is {
   phase: string;
   name: string;
   toolCallId: string;