feat(GOV-009): 建立 NestJS 三进程基线

server/libs/config/src/load-process-env.ts

@@ -0,0 +1,60 @@
+import { existsSync, readFileSync } from 'node:fs';
+import path from 'node:path';
+
+import { parse } from 'dotenv';
+
+import {
+  loadApiConfig,
+  loadSchedulerConfig,
+  loadWorkerConfig,
+  type ApiRuntimeConfig,
+  type SchedulerRuntimeConfig,
+  type WorkerRuntimeConfig,
+} from './runtime-config';
+
+type ProcessName = 'api' | 'scheduler' | 'worker';
+
+function findRepositoryRoot(startDirectory: string): string {
+  let current = path.resolve(startDirectory);
+
+  while (true) {
+    if (existsSync(path.join(current, 'pnpm-workspace.yaml'))) return current;
+    const parent = path.dirname(current);
+    if (parent === current) throw new Error('无法定位项目根目录');
+    current = parent;
+  }
+}
+
+function readDevelopmentEnv(processName: ProcessName): NodeJS.ProcessEnv {
+  const repositoryRoot = findRepositoryRoot(__dirname);
+  const envFile = path.join(
+    repositoryRoot,
+    'deploy',
+    'env',
+    'development',
+    `${processName}.env.local`,
+  );
+
+  if (!existsSync(envFile)) {
+    throw new Error(`缺少本地开发配置：deploy/env/development/${processName}.env.local`);
+  }
+
+  return { ...process.env, ...parse(readFileSync(envFile)) };
+}
+
+function resolveProcessEnvironment(processName: ProcessName): NodeJS.ProcessEnv {
+  // 生产环境只信任 systemd/Compose 注入的 process.env，绝不读取仓库内开发配置。
+  return process.env.APP_ENV === 'production' ? process.env : readDevelopmentEnv(processName);
+}
+
+export function loadApiProcessConfig(): ApiRuntimeConfig {
+  return loadApiConfig(resolveProcessEnvironment('api'));
+}
+
+export function loadSchedulerProcessConfig(): SchedulerRuntimeConfig {
+  return loadSchedulerConfig(resolveProcessEnvironment('scheduler'));
+}
+
+export function loadWorkerProcessConfig(): WorkerRuntimeConfig {
+  return loadWorkerConfig(resolveProcessEnvironment('worker'));
+}