fix: restore pytest ini_options and disable capture for Click compatibility

The [tool.pytest] section (introduced by main's a30cb99 commit) was wrong
and should be [tool.pytest.ini_options]. Also add --capture=no to avoid
a conflict between pytest's stdout/stderr capture and Click 8.3.1's
CliRunner StreamMixer, which causes ValueError: I/O operation on closed file.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: adamtheturtle

pyproject.toml

@@ -303,8 +303,9 @@ keep_full_version = true
 max_supported_python = "3.14"
 
 [tool.pytest]
-xfail_strict = true
-log_cli = true
+ini_options.xfail_strict = true
+ini_options.log_cli = true
+ini_options.addopts = "--capture=no"
 
 [tool.coverage]
 run.branch = true