chore: switch update-check and release URLs to self-hosted Forgejo

GitHub-репо заморожены; релизы теперь на git.engelgardt23.ru.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/netswitch/__init__.py

@@ -6,5 +6,5 @@ The single source of truth for the project version. Bump this before tagging
 a release; CI reads the tag, the code reads this constant.
 """
 
-__version__ = "1.2.0"
+__version__ = "1.2.1"
-GITHUB_REPO = "Engelgardt23/netswitch"
+GITHUB_REPO = "engel/netswitch"  # на Forgejo (git.engelgardt23.ru)

src/netswitch/app.py

@@ -69,7 +69,7 @@ def main() -> None:
     title  = f"[bold cyan]netswitch v{__version__}[/] {t('tagline')}"
     latest = check_for_update()
     if latest:
-        release_url = f"https://github.com/{GITHUB_REPO}/releases/latest"
+        release_url = f"https://git.engelgardt23.ru/{GITHUB_REPO}/releases/latest"
         notice      = t("update_available", tag=latest)
         header = Table.grid(expand=True)
         header.add_column(justify="left",  ratio=1)

src/netswitch/update_check.py

@@ -21,9 +21,8 @@ def _parse_version(s: str) -> tuple[int, int, int]:
 
 def check_for_update() -> str | None:
     try:
-        url = f"https://api.github.com/repos/{GITHUB_REPO}/releases/latest"
+        url = f"https://git.engelgardt23.ru/api/v1/repos/{GITHUB_REPO}/releases/latest"
         req = urllib.request.Request(url, headers={
-            "Accept":     "application/vnd.github+json",
             "User-Agent": f"netswitch/{__version__}",
         })
         with urllib.request.urlopen(req, timeout=3) as r: