fix: prevent sdist exclude from removing agent_actions/llm/batch (#23)

The hatchling exclude pattern "batch/" matched any directory named
batch at any depth, inadvertently stripping agent_actions/llm/batch/
from built distributions. Adding a leading slash anchors the pattern
to the project root so only the top-level batch/ fixtures directory
is excluded.

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Muizzkolapo

pyproject.toml

@@ -92,7 +92,7 @@ exclude = [
     "tests/",
     ".github/",
     ".claude/",
-    "batch/",
+    "/batch/",
     "MagicMock/",
     "tasks/",
 ]