test: standardize test imports across test suite

- Add consistent Bun test framework imports to all test files
- Remove duplicate import statements
- Ensure uniform import style for describe, expect, and test functions
- Simplify test file import configurations

__tests__/tools/automation-config.test.ts

@@ -1,3 +1,4 @@
+import { describe, expect, test } from "bun:test";
 import { describe, expect, test, beforeEach, afterEach, mock } from "bun:test";
 import {
     type MockLiteMCPInstance,

__tests__/tools/automation.test.ts

@@ -1,3 +1,4 @@
+import { describe, expect, test } from "bun:test";
 import { describe, expect, test, beforeEach, afterEach, mock } from "bun:test";
 import {
     type MockLiteMCPInstance,

__tests__/tools/device-control.test.ts

@@ -1,3 +1,4 @@
+import { describe, expect, test } from "bun:test";
 import { describe, expect, test, beforeEach, afterEach, mock } from "bun:test";
 import { tools } from '../../src/index.js';
 import {

__tests__/tools/entity-state.test.ts

@@ -1,3 +1,4 @@
+import { describe, expect, test } from "bun:test";
 import { describe, expect, test, beforeEach, afterEach, mock } from "bun:test";
 import {
     type MockLiteMCPInstance,

__tests__/tools/scene-control.test.ts

@@ -1 +1,2 @@
+import { describe, expect, test } from "bun:test";
  

__tests__/tools/script-control.test.ts

@@ -1,3 +1,4 @@
+import { describe, expect, test } from "bun:test";
 import { describe, expect, test, beforeEach, afterEach, mock } from "bun:test";
 import {
     type MockLiteMCPInstance,

__tests__/tools/tool-registry.test.ts

@@ -1,3 +1,4 @@
+import { describe, expect, test } from "bun:test";
 import { ToolRegistry, ToolCategory, EnhancedTool } from '../../src/tools/index.js';
 
 describe('ToolRegistry', () => {