fix(ci): fix semantic-release config and delete orphaned v0.3.0 tag

The v0.3.0 tag was on a commit not reachable from HEAD (orphaned by a
non-squash merge of PR #27). semantic-release walked past it and computed
0.3.0 from v0.2.0, then refused because "0.3.0 has already been released".

Fix: deleted the orphaned tag/release and added major_on_zero=false to
prevent feat commits from bumping to 1.0.0 while in 0.x range.

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

Author: abrichr

pyproject.toml

@@ -101,6 +101,7 @@ line-length = 100
 version_toml = ["pyproject.toml:project.version"]
 branch = "main"
 commit_message = "chore: release {version}"
+major_on_zero = false
 
 [tool.semantic_release.commit_parser_options]
 allowed_tags = ["build", "chore", "ci", "docs", "feat", "fix", "perf", "refactor", "style", "test"]