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/git.py

@@ -0,0 +1,116 @@
+"""Git utilities including proxy management."""
+
+import subprocess
+
+import click
+
+from bin.config import config
+
+
+def _get_proxies() -> dict[str, str]:
+    """Get git proxies from config."""
+    proxies = {}
+    for key, value in config.get_all().items():
+        if key.startswith("proxy_"):
+            name = key[6:]  # Remove 'proxy_' prefix
+            proxies[name] = value
+    return proxies
+
+
+def _get_git_proxy(key: str) -> str:
+    """Get a global git proxy config value."""
+    result = subprocess.run(
+        ["git", "config", "--global", key],
+        capture_output=True,
+        text=True,
+        check=False,
+    )
+    return result.stdout.strip() if result.returncode == 0 else "(not set)"
+
+
+def _unset_git_proxy(key: str) -> None:
+    """Unset a global git proxy config value (no-op if not set)."""
+    subprocess.run(
+        ["git", "config", "--global", "--unset", key],
+        capture_output=True,
+        check=False,
+    )
+
+
+@click.group(name="git")
+def git_cmd() -> None:
+    """Git utilities."""
+    pass
+
+
+@git_cmd.group(name="proxy")
+def proxy_cmd() -> None:
+    """Manage git proxy settings."""
+    pass
+
+
+def _complete_proxy_names(_ctx, _param, incomplete):
+    """Shell completion for proxy names."""
+    return [
+        name for name in _get_proxies() if name.startswith(incomplete)
+    ]
+
+
+@proxy_cmd.command("set")
+@click.argument("name", shell_complete=_complete_proxy_names)
+def proxy_set(name: str) -> None:
+    """Set git proxy by name."""
+    proxies = _get_proxies()
+    if name not in proxies:
+        click.echo(f"Unknown proxy: {name}", err=True)
+        click.echo(f"Available: {', '.join(proxies.keys())}", err=True)
+        raise click.Exit(1)
+
+    proxy_url = proxies[name]
+    subprocess.run(
+        ["git", "config", "--global", "http.proxy", proxy_url], check=True
+    )
+    subprocess.run(
+        ["git", "config", "--global", "https.proxy", proxy_url], check=True
+    )
+    click.secho(f"Git proxy set to {name}: {proxy_url}", fg="green")
+
+
+@proxy_cmd.command("unset")
+def proxy_unset() -> None:
+    """Unset git proxy."""
+    _unset_git_proxy("http.proxy")
+    _unset_git_proxy("https.proxy")
+    click.secho("Git proxy unset", fg="green")
+
+
+@proxy_cmd.command("status")
+def proxy_status() -> None:
+    """Show current git proxy status."""
+    http_proxy = _get_git_proxy("http.proxy")
+    https_proxy = _get_git_proxy("https.proxy")
+
+    proxies = _get_proxies()
+    current_name = next(
+        (p for p, url in proxies.items() if url == http_proxy), None
+    )
+
+    click.secho("Git proxy status:", fg="cyan")
+    if current_name:
+        click.echo(f"  Active: {current_name}")
+    click.echo(f"  http.proxy:  {http_proxy}")
+    click.echo(f"  https.proxy: {https_proxy}")
+
+    click.secho("\nAvailable proxies:", fg="cyan")
+    for proxy_name, url in proxies.items():
+        marker = "*" if proxy_name == current_name else " "
+        click.echo(f"  [{marker}] {proxy_name:12} {url}")
+
+
+@proxy_cmd.command("list")
+def proxy_list_cmd() -> None:
+    """List available git proxies."""
+    proxies = _get_proxies()
+    click.secho("Available proxies:", fg="cyan")
+    for name, url in proxies.items():
+        click.echo(f"  {name:12} {url}")