fix: feat: restore smoke-init CI pipeline using mock Forgejo (#124)

tests/mock-forgejo.py

@@ -702,11 +702,10 @@ def main():
     global SHUTDOWN_REQUESTED
 
     port = int(os.environ.get("MOCK_FORGE_PORT", 3000))
-    server = ThreadingHTTPServer(("0.0.0.0", port), ForgejoHandler)
-    try:
-        server.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
-    except OSError:
-        pass  # Not all platforms support this
+    # Set SO_REUSEADDR before creating the server to allow port reuse
+    class ReusableHTTPServer(ThreadingHTTPServer):
+        allow_reuse_address = True
+    server = ReusableHTTPServer(("0.0.0.0", port), ForgejoHandler)
 
     print(f"Mock Forgejo server starting on port {port}", file=sys.stderr)