refactor(build): deduplicate codex agent template

Author: teng-lin

pyproject.toml

@@ -86,7 +86,7 @@ replacement = '](https://github.com/teng-lin/notebooklm-py/blob/v$HFPR_VERSION/S
 
 [tool.hatch.build.targets.wheel]
 packages = ["src/notebooklm"]
-force-include = {"SKILL.md" = "notebooklm/data/SKILL.md"}
+force-include = {"SKILL.md" = "notebooklm/data/SKILL.md", "AGENTS.md" = "notebooklm/data/CODEX.md"}
 
 [tool.pytest.ini_options]
 testpaths = ["tests"]

src/notebooklm/data/CODEX.md

@@ -9,7 +9,7 @@
 
 
 def test_wheel_includes_root_skill_content(tmp_path):
-    """The built wheel should carry the canonical repo SKILL.md into package data."""
+    """The built wheel should carry the canonical repo agent docs into package data."""
     if shutil.which("uv") is None:
         pytest.skip("uv is required for build smoke tests")
 
@@ -27,5 +27,7 @@ def test_wheel_includes_root_skill_content(tmp_path):
     wheel_path = next(build_dir.glob("*.whl"))
     with zipfile.ZipFile(wheel_path) as wheel:
         packaged_skill = wheel.read("notebooklm/data/SKILL.md").decode("utf-8")
+        packaged_codex = wheel.read("notebooklm/data/CODEX.md").decode("utf-8")
 
     assert packaged_skill == (repo_root / "SKILL.md").read_text(encoding="utf-8")
+    assert packaged_codex == (repo_root / "AGENTS.md").read_text(encoding="utf-8")

tests/integration/test_skill_packaging.py

@@ -53,7 +53,14 @@ class TestAgentTemplates:
 
     def test_codex_template_falls_back_to_package_data(self, tmp_path):
         """Test that codex content falls back to packaged data outside repo root."""
-        with patch.object(agent_templates_module, "REPO_ROOT_AGENTS", tmp_path / "AGENTS.md"):
+        with (
+            patch.object(agent_templates_module, "REPO_ROOT_AGENTS", tmp_path / "AGENTS.md"),
+            patch.object(
+                agent_templates_module,
+                "_read_package_data",
+                return_value="# Repository Guidelines",
+            ),
+        ):
             content = agent_templates_module.get_agent_source_content("codex")
 
         assert content is not None