Fix channel fingerprint color using Click's native style API

Use click.style() with bright_yellow and color=True to ensure
the channel fingerprint displays in color across different
terminal environments.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/stegasoo/cli.py

@@ -857,9 +857,10 @@ def info(ctx, full):
         # Channel
         if channel_fingerprint:
             masked = f"{channel_fingerprint[:4]}••••••••{channel_fingerprint[-4:]}"
-            click.echo(f"  Channel:     \033[1;33m{masked}\033[0m")  # Bold yellow/orange for private channel
+            colored_masked = click.style(masked, fg='bright_yellow', bold=True)
+            click.echo(f"  Channel:     {colored_masked}", color=True)
         else:
-            click.echo("  Channel:     \033[33mpublic\033[0m")
+            click.echo(f"  Channel:     {click.style('public', fg='yellow')}", color=True)
 
         # DCT
         dct_status = "\033[32m✓ enabled\033[0m" if has_dct else "\033[31m✗ disabled\033[0m"