feat: 添加 GitHub 相关的 API 操作，包括获取、创建、更新和删除 starred 项目

convex/schema.ts

@@ -4,16 +4,17 @@ import { v } from "convex/values";
 export default defineSchema({
   // Other tables here...
   github_starred: defineTable({
-    author: v.string(),
-    auto: v.string(),
+    repo_id: v.number(),
+    title: v.string(),
     description: v.string(),
+    author: v.string(),
+    stars: v.number(),
     last_updated: v.string(),
     link: v.string(),
-    repo_id: v.float64(),
-    stars: v.float64(),
-    summary: v.string(),
-    title: v.string(),
-  }),
+    auto: v.optional(v.string()),
+    summary: v.optional(v.string()),
+  }).index("by_repo_id", ["repo_id"])
+    .index("by_title", ["title"]),
   users: defineTable({
     userId: v.string(), // 外部系统的用户 ID
     name: v.string(),