main: 初始化 Face to API 项目

- 添加前端抽卡台与模型配置界面
- 添加 Express API 服务与多厂商模型调用适配
- 配置本地环境示例、构建脚本和忽略规则

server/template.ts

@@ -0,0 +1,22 @@
+import type { ChatModel } from "./modelRegistry.js";
+
+export type TemplateContext = {
+  draw: number;
+  model: ChatModel;
+  startedAt: Date;
+};
+
+export const renderPrompt = (template: string, context: TemplateContext) => {
+  const values: Record<string, string> = {
+    draw: String(context.draw),
+    model: context.model.label,
+    provider: context.model.providerName,
+    now: context.startedAt.toLocaleString("zh-CN", { hour12: false }),
+    timestamp: context.startedAt.toISOString()
+  };
+
+  return template.replace(/\{\{\s*([a-zA-Z0-9_-]+)\s*\}\}/g, (match, key: string) => {
+    return values[key] ?? match;
+  });
+};
+