Add -v/--version flag to CLI

Add a version flag that displays the package version from importlib.metadata.
Both -v and --version are supported. Includes tests for both flags.

Author: claude

src/claude_code_publish/__init__.py

@@ -1,5 +1,6 @@
 """Convert Claude Code session JSON to a clean mobile-friendly HTML page with pagination."""
 
+import importlib.metadata
 import json
 import html
 import os
@@ -921,6 +922,23 @@ def generate_html(json_path, output_dir, github_repo=None):
 
 
 @click.group(cls=DefaultGroup, default="session", default_if_no_args=False)
+@click.option(
+    "-v",
+    "--version",
+    is_flag=True,
+    callback=lambda ctx, param, value: (
+        ctx.exit(
+            click.echo(
+                f"claude-code-publish, version {importlib.metadata.version('claude-code-publish')}"
+            )
+        )
+        if value
+        else None
+    ),
+    expose_value=False,
+    is_eager=True,
+    help="Show the version and exit.",
+)
 def cli():
     """Convert Claude Code session JSON to mobile-friendly HTML pages."""
     pass

tests/test_generate_html.py

@@ -871,6 +871,32 @@ def mock_run(*args, **kwargs):
         assert "gistpreview.github.io" in result.output
 
 
+class TestVersionOption:
+    """Tests for the --version option."""
+
+    def test_version_long_flag(self):
+        """Test that --version shows version info."""
+        from click.testing import CliRunner
+        from claude_code_publish import cli
+
+        runner = CliRunner()
+        result = runner.invoke(cli, ["--version"])
+
+        assert result.exit_code == 0
+        assert "0.2" in result.output
+
+    def test_version_short_flag(self):
+        """Test that -v shows version info."""
+        from click.testing import CliRunner
+        from claude_code_publish import cli
+
+        runner = CliRunner()
+        result = runner.invoke(cli, ["-v"])
+
+        assert result.exit_code == 0
+        assert "0.2" in result.output
+
+
 class TestOpenOption:
     """Tests for the --open option."""