feat: migrate paqctl to self-hosted Gitea (git.samnet.dev)

All repository URLs updated from GitHub (SamNet-dev/paqctl) to
Gitea (git.samnet.dev/SamNet-dev/paqctl). Third-party references
(hanselime/paqet, Xray, microsocks) remain on GitHub.

windows/GFK-Client.bat

@@ -0,0 +1,42 @@
+@echo off
+:: GFW-knocker Client Launcher
+:: Double-click to run
+
+:: Check for admin rights
+net session >nul 2>&1
+if %errorlevel% neq 0 (
+    echo Requesting Administrator privileges...
+    powershell -Command "Start-Process '%~f0' -Verb RunAs"
+    exit /b
+)
+
+echo.
+echo ===============================================
+echo   GFW-KNOCKER CLIENT (Python/QUIC Proxy)
+echo ===============================================
+echo.
+echo   Requirements:
+echo     - Npcap (will prompt to install)
+echo     - Python 3.x (will prompt to install)
+echo.
+echo   Once connected, configure your browser:
+echo.
+echo   FIREFOX:
+echo     Settings ^> Network Settings ^> Settings
+echo     Select "Manual proxy configuration"
+echo     SOCKS Host: 127.0.0.1    Port: 1080
+echo     Select SOCKS v5
+echo     Check "Proxy DNS when using SOCKS v5"
+echo.
+echo   CHROME (launch with proxy):
+echo     chrome.exe --proxy-server="socks5://127.0.0.1:1080"
+echo.
+echo   To verify: Visit https://ifconfig.me
+echo   (Should show your server IP, not your home IP)
+echo.
+echo   Press Ctrl+C to disconnect
+echo ===============================================
+echo.
+
+:: Run the PowerShell script with gfk backend
+powershell -ExecutionPolicy Bypass -NoExit -File "%~dp0paqet-client.ps1" -Backend gfk