feat: add command to clear cached GitHub authentication token

viu_media/cli/commands/config.py

@@ -30,6 +30,9 @@ from ...core.config import AppConfig
 \b 
   # view the current contents of your config
   viu config --view
+\b
+  # clear cached GitHub authentication token
+  viu config --clear-github-auth
 """,
 )
 @click.option("--path", "-p", help="Print the config location and exit", is_flag=True)
@@ -60,6 +63,11 @@ from ...core.config import AppConfig
     is_flag=True,
     help="Start the interactive configuration wizard.",
 )
+@click.option(
+    "--clear-github-auth",
+    is_flag=True,
+    help="Clear cached GitHub authentication token.",
+)
 @click.pass_obj
 def config(
     user_config: AppConfig,
@@ -69,12 +77,18 @@ def config(
     generate_desktop_entry,
     update,
     interactive,
+    clear_github_auth,
 ):
     from ...core.constants import USER_CONFIG
     from ..config.editor import InteractiveConfigEditor
     from ..config.generate import generate_config_toml_from_app_model
 
-    if path:
+    if clear_github_auth:
+        from ..service.github import GitHubContributionService
+
+        GitHubContributionService.clear_cached_auth_static()
+        click.echo("GitHub authentication cache cleared.")
+    elif path:
         print(USER_CONFIG)
     elif view:
         from rich.console import Console

viu_media/cli/service/github/service.py

@@ -645,6 +645,13 @@ This PR updates `{NORMALIZER_FILE_PATH}` with the following mapping:
             AUTH_FILE.unlink()
             logger.info("Cleared GitHub authentication cache")
 
+    @staticmethod
+    def clear_cached_auth_static() -> None:
+        """Clear cached GitHub authentication (static method for CLI use)."""
+        if AUTH_FILE.exists():
+            AUTH_FILE.unlink()
+            logger.info("Cleared GitHub authentication cache")
+
     def _log_info(self, message: str) -> None:
         """Log info message."""
         if self.feedback: