refactor: 重构为单向生成架构，CLI 零参数可用

- 迁移 examples/rules/ 到 src/rules/，resources/devices.json 到 src/devices.json
- 迁移 resources/fetch-devlist.js 到 src/tools/fetch-devlist.ts 并改造为 ESM
- CLI 简化为零参数：bun run pack 自动编译并输出 dist/miot_{timestamp}.bak
- 移除备份合并能力：删除 mergeCompiledRules、RuleReplaceStrategy、dry-run、replace 参数
- 编译器简化为从零生成，不再支持 baseBackup 合并
- 新增 fetch-devices 命令用于从中枢网关更新设备清单
- 新增 bn.js、elliptic 依赖
- 更新测试路径引用，移除依赖合并逻辑的测试用例
- 更新 README.md 反映新项目结构和命令

tests/validate.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test";
-import { compileRule, readDeviceInventoryFile, validateBackup } from "../src/index.ts";
-import { eventTurnOn } from "../examples/rules/index.ts";
+import { compileRule, validateBackup } from "../src/index.ts";
+import { eventTurnOn } from "../src/rules/index.ts";
 
 const now = 1_760_000_000_000;
 
@@ -25,9 +25,10 @@ describe("备份校验", () => {
     expect(diagnostics.filter((diagnostic) => diagnostic.code === "device-not-found")).toHaveLength(2);
   });
 
-  test("真实设备清单可通过设备校验", () => {
+  test("真实设备清单可通过设备校验", async () => {
     const backup = backupFromRule();
-    const diagnostics = validateBackup(backup, { devices: readDeviceInventoryFile("resources/devices.json") });
+    const devices = (await import("../src/devices.json")).default;
+    const diagnostics = validateBackup(backup, { devices });
     expect(diagnostics.filter((diagnostic) => diagnostic.severity === "error")).toEqual([]);
   });
 });