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

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

dev/src/vrcx/__init__.py

@@ -10,4 +10,4 @@ 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__ = "0.2.0-dev"
-GITHUB_REPO = "Engelgardt23/vrcx"
+GITHUB_REPO = "engel/vrcx"  # на Forgejo (git.engelgardt23.ru)

dev/src/vrcx/app.py

@@ -170,7 +170,7 @@ def _print_header(console: Console) -> None:
     title  = f"[bold cyan]vrcx 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)

dev/src/vrcx/update_check.py

@@ -29,9 +29,8 @@ def check_for_update() -> str | None:
     the currently running version. Returns None when up-to-date, offline,
     rate-limited or on any error — caller decides how to render."""
     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"vrcx/{__version__}",
         })
         with urllib.request.urlopen(req, timeout=3) as r: