refactor: rename package from mytoolkit to bin

- Move all source files from mytoolkit/ to bin/
- Update entry point and build config in pyproject.toml
- Add pillow and pypdf dependencies
- Update README and .gitignore paths
- Remove unused subprocess import in pdf.py
- Clean up duplicate imports in pdf merge command

bin/commands/utils.py

@@ -0,0 +1,32 @@
+"""Utility commands."""
+
+from pathlib import Path
+
+import click
+
+from bin.utils import handle_errors
+
+
+@click.group()
+def utils():
+    """Miscellaneous utilities."""
+    pass
+
+
+@utils.command("albany-cleanup")
+@click.option("--dry-run", "-n", is_flag=True, help="Show what would be done")
+@handle_errors
+def albany_cleanup(dry_run):
+    """Clean up Albany temporary files (phalanx_*)."""
+    count = 0
+    for file in Path(".").glob("phalanx_*"):
+        if dry_run:
+            click.echo(f"Would remove: {file}")
+        else:
+            file.unlink()
+            count += 1
+
+    if dry_run:
+        click.echo("Dry run completed")
+    else:
+        click.echo(f"Removed {count} Albany temporary files")