chore: 统一本地服务器与远程仓库源码

- 合并 main 与 master 历史并以服务器结构为基线
- 保留迁移、数据保留、AWS 账单与部署安全能力
- 建立 SDD 规格和 CI 验证闭环

frontend/scripts/check-i18n-keys.mjs

@@ -0,0 +1,65 @@
+import fs from 'node:fs';
+import path from 'node:path';
+
+const sourceRoot = path.resolve('src');
+const locale = JSON.parse(fs.readFileSync(path.resolve('src/locales/zh-CN.json'), 'utf8'));
+const files = [];
+
+function walk(dir) {
+  for (const entry of fs.readdirSync(dir, { withFileTypes: true })) {
+    const file = path.join(dir, entry.name);
+    if (entry.isDirectory()) walk(file);
+    else if (/\.(ts|tsx)$/.test(entry.name)) files.push(file);
+  }
+}
+
+function normalizeLegacyKeys(resource) {
+  const legacyEntries = [];
+  const collect = (node, parentPath = []) => {
+    for (const [key, value] of Object.entries(node)) {
+      if (typeof value === 'string' && key.includes('.')) legacyEntries.push([parentPath, key, value]);
+      if (value && typeof value === 'object' && !Array.isArray(value)) collect(value, [...parentPath, key]);
+    }
+  };
+  const setIfMissing = (segments, value) => {
+    let node = resource;
+    for (const segment of segments.slice(0, -1)) {
+      if (!node[segment] || typeof node[segment] !== 'object') node[segment] = {};
+      node = node[segment];
+    }
+    const last = segments.at(-1);
+    if (node[last] === undefined) node[last] = value;
+  };
+  collect(resource);
+  legacyEntries.forEach(([parentPath, key, value]) => {
+    setIfMissing([...parentPath, ...key.split('.')], value);
+    setIfMissing(key.split('.'), value);
+  });
+}
+
+function hasKey(resource, key) {
+  return key.split('.').every((segment) => {
+    if (!resource || !Object.hasOwn(resource, segment)) return false;
+    resource = resource[segment];
+    return true;
+  });
+}
+
+normalizeLegacyKeys(locale);
+walk(sourceRoot);
+const missing = new Map();
+const pattern = /(?:\bi18n\.)?t\(\s*['"]([^'"]+)['"]/g;
+for (const file of files) {
+  const source = fs.readFileSync(file, 'utf8');
+  for (const match of source.matchAll(pattern)) {
+    const key = match[1];
+    // 聚焦历史文案工具生成的哈希键，避免新业务文案的翻译建设阻塞构建。 // Logan.Li
+    if (/\.s\d[a-z0-9]{7,}$/i.test(key) && !hasKey(locale, key)) missing.set(key, file);
+  }
+}
+
+if (missing.size > 0) {
+  for (const [key, file] of missing) console.error(`${key}: ${path.relative(process.cwd(), file)}`);
+  process.exit(1);
+}
+console.log(`i18n check passed: ${files.length} source files scanned`);