agent: implement issue #3 - Enhancement: 检查现有的代码框架，确认是否需要优化

tests/test_gitea_service.py

@@ -119,6 +119,49 @@ def test_list_open_issues_keeps_normal_issues_with_null_pull_request():
     assert [issue.number for issue in issues] == [1]
 
 
+def test_list_open_issues_reads_all_pages():
+    seen_pages: list[int] = []
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        assert request.url.path == "/api/v1/repos/acme/service/issues"
+        page = int(request.url.params["page"])
+        limit = int(request.url.params["limit"])
+        seen_pages.append(page)
+        if page == 1:
+            return httpx.Response(
+                200,
+                json=[
+                    {
+                        "number": number,
+                        "title": f"Issue {number}",
+                        "body": "",
+                        "state": "open",
+                        "labels": [],
+                    }
+                    for number in range(1, limit + 1)
+                ],
+            )
+        if page == 2:
+            return httpx.Response(
+                200,
+                json=[
+                    {
+                        "number": 51,
+                        "title": "Issue 51",
+                        "body": "",
+                        "state": "open",
+                        "labels": [],
+                    }
+                ],
+            )
+        return httpx.Response(500)
+
+    issues = make_client(handler).list_open_issues("acme", "service")
+
+    assert [issue.number for issue in issues] == list(range(1, 52))
+    assert seen_pages == [1, 2]
+
+
 class FakeWorkspaceManager:
     def __init__(self, root: Path, *, diff: bool = True):
         self.root = root