refactor: move GitHub GraphQL API logic to server

Changed architecture from Extension directly calling GitHub GraphQL API to routing through server for better separation of concerns

- Add /api/issues/status and /api/issues/status/update endpoints to server
- Simplify Extension's github-api.service.ts
- Move GraphQL query building/parsing logic to Go server
- Improve security by removing direct GitHub token exposure in Extension

fix #81

Author: kubrickcode

extension/src/constants/api.spec.ts

@@ -1,11 +1,10 @@
-import { API, ERROR_MESSAGES, GRAPHQL } from "./api";
+import { API, ERROR_MESSAGES } from "./api";
 
 describe("API Constants", () => {
   describe("API", () => {
     it("should have valid URL formats", () => {
       const urlPattern = /^https?:\/\/.+/;
       expect(API.BASE_URL).toMatch(urlPattern);
-      expect(API.GITHUB.GRAPHQL_URL).toMatch(urlPattern);
       expect(API.GITHUB.OAUTH_URL).toMatch(urlPattern);
     });
 
@@ -22,14 +21,6 @@ describe("API Constants", () => {
     it("should have correct structure", () => {
       expect(API.BASE_URL).toBeDefined();
       expect(API.GITHUB).toBeDefined();
-      expect(API.GITHUB.GRAPHQL_URL).toBeDefined();
-    });
-  });
-
-  describe("GRAPHQL", () => {
-    it("should have valid field names", () => {
-      expect(GRAPHQL.ISSUE_ALIAS_PREFIX).toBe("issue");
-      expect(GRAPHQL.STATUS_FIELD_NAME).toBe("Status");
     });
   });
 
@@ -40,7 +31,6 @@ describe("API Constants", () => {
     });
 
     it("should have correct structure", () => {
-      // Verify the error message exists and is a string
       expect(typeof ERROR_MESSAGES.AUTH_REQUIRED).toBe("string");
       expect(ERROR_MESSAGES.AUTH_REQUIRED.length).toBeGreaterThan(0);
     });

extension/src/constants/api.ts

@@ -2,7 +2,6 @@ export const API = {
   BASE_URL: "https://github-project-status-viewer.vercel.app/api",
   GITHUB: {
     CLIENT_ID: "Ov23liFFkeCk13ofhM7c",
-    GRAPHQL_URL: "https://api.github.com/graphql",
     OAUTH_URL: "https://github.com/login/oauth/authorize",
     SCOPE: "repo project",
   },
@@ -11,8 +10,3 @@ export const API = {
 export const ERROR_MESSAGES = {
   AUTH_REQUIRED: "Authentication required. Please log in via the extension popup.",
 } as const;
-
-export const GRAPHQL = {
-  ISSUE_ALIAS_PREFIX: "issue",
-  STATUS_FIELD_NAME: "Status",
-} as const;