feat(tools): 添加 CLI 模块管理命令和文档验证 demos

- CLI 新增 list/add/remove 命令管理项目模块
- 创建 demos 包验证模块文档正确性
- 包含 Timer/FSM/Pathfinding/Procgen/Spatial 5个模块的完整测试

packages/tools/demos/src/index.ts

@@ -0,0 +1,75 @@
+/**
+ * ESEngine Module Demos - Run all demos to verify documentation
+ */
+
+import { runTimerDemo } from './timer.demo.js';
+import { runFSMDemo } from './fsm.demo.js';
+import { runPathfindingDemo } from './pathfinding.demo.js';
+import { runProcgenDemo } from './procgen.demo.js';
+import { runSpatialDemo } from './spatial.demo.js';
+
+async function runAllDemos(): Promise<void> {
+    console.log('\n');
+    console.log('╔═══════════════════════════════════════════════════════════╗');
+    console.log('║           ESEngine Module Documentation Tests             ║');
+    console.log('╚═══════════════════════════════════════════════════════════╝');
+    console.log('\n');
+
+    const demos = [
+        { name: 'Timer', fn: runTimerDemo },
+        { name: 'FSM', fn: runFSMDemo },
+        { name: 'Pathfinding', fn: runPathfindingDemo },
+        { name: 'Procgen', fn: runProcgenDemo },
+        { name: 'Spatial', fn: runSpatialDemo },
+    ];
+
+    const results: { name: string; passed: boolean; error?: string }[] = [];
+
+    for (const demo of demos) {
+        try {
+            await demo.fn();
+            results.push({ name: demo.name, passed: true });
+        } catch (error) {
+            results.push({
+                name: demo.name,
+                passed: false,
+                error: error instanceof Error ? error.message : String(error)
+            });
+        }
+    }
+
+    // Summary
+    console.log('\n');
+    console.log('╔═══════════════════════════════════════════════════════════╗');
+    console.log('║                      Summary                              ║');
+    console.log('╚═══════════════════════════════════════════════════════════╝');
+    console.log('\n');
+
+    let allPassed = true;
+    for (const result of results) {
+        if (result.passed) {
+            console.log(`  ✓ ${result.name}: PASSED`);
+        } else {
+            console.log(`  ✗ ${result.name}: FAILED - ${result.error}`);
+            allPassed = false;
+        }
+    }
+
+    console.log('\n');
+    if (allPassed) {
+        console.log('  ══════════════════════════════════════');
+        console.log('     ALL DOCUMENTATION TESTS PASSED ✓');
+        console.log('  ══════════════════════════════════════');
+    } else {
+        console.log('  ══════════════════════════════════════');
+        console.log('     SOME TESTS FAILED ✗');
+        console.log('  ══════════════════════════════════════');
+        process.exit(1);
+    }
+    console.log('\n');
+}
+
+runAllDemos().catch((error) => {
+    console.error('Fatal error:', error);
+    process.exit(1);
+});