fix: add checkout to tag release job and use dynamic __version__

Add missing actions/checkout to github_tag_release workflow job.
Replace hardcoded __version__ with importlib.metadata lookup so the
version always matches pyproject.toml. Bump to 0.1.3.

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

Author: JerryLife

.github/workflows/release.yml

@@ -85,6 +85,9 @@ jobs:
       contents: write
 
     steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
       - name: Download Dist Artifact
         uses: actions/download-artifact@v4
         with:

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "llm-dna"
-version = "0.1.2"
+version = "0.1.3"
 description = "Extract LLM DNA vectors — low-dimensional representations that capture functional behavior and model evolution."
 authors = [{ name = "LLM-DNA Project" }]
 license = { file = "LICENSE" }

src/llm_dna/__init__.py

@@ -9,7 +9,9 @@
     "calc_dna_batch",
 ]
 
-__version__ = "0.0.1"
+from importlib.metadata import version as _version
+
+__version__ = _version("llm-dna")
 
 
 def __getattr__(name: str):