Improve non-GitHub handling in ci setup and push

Clarify that ci setup only supports GitHub-hosted repos. Only show
the BUMPY_GH_TOKEN warning when running on GitHub Actions, since
other CI providers don't have the same anti-recursion limitation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: theoephraim

packages/bumpy/src/commands/ci-setup.ts

@@ -17,7 +17,11 @@ export async function ciSetupCommand(rootDir: string): Promise<void> {
   // Detect repo and package manager context
   const repo = detectRepo(rootDir);
   if (!repo) {
-    log.error('Could not detect GitHub repository. Run this from a repo with a GitHub remote.');
+    log.error(
+      'Could not detect a GitHub repository.\n' +
+        '  This command currently only supports GitHub-hosted repos.\n' +
+        '  Make sure you have a GitHub remote (git remote -v).',
+    );
     process.exit(1);
   }
   const pm = await detectPackageManager(rootDir);

packages/bumpy/src/commands/ci.ts

@@ -209,7 +209,8 @@ function pushWithToken(rootDir: string, branch: string): void {
     log.dim('  Pushed with custom token — PR workflows will be triggered');
   } else {
     runArgs(['git', 'push', '-u', 'origin', branch, '--force'], { cwd: rootDir });
-    if (!token) {
+    if (!token && repo) {
+      // Only warn on GitHub Actions — other CI providers don't have this limitation
       log.warn(
         'BUMPY_GH_TOKEN is not set — PR checks will not trigger automatically.\n' +
           '  Run `bumpy ci setup` for help, or see https://bumpy.dev/docs/ci#pr-checks',