fix(deps): align manual install coreml-diffusion minimum

requirements.txt

@@ -1,4 +1,4 @@
-coreml-diffusion>=0.1.4,<0.2
+coreml-diffusion>=0.1.6,<0.2
 coremltools>=9,<10
 numpy>=2,<3
 diffusers>=0.30

tests/unit/test_dependency_metadata.py

@@ -0,0 +1,26 @@
+"""Keep the manual-install dependency bounds aligned with package metadata."""
+
+from pathlib import Path
+import tomllib
+import unittest
+
+
+REPO_ROOT = Path(__file__).resolve().parents[2]
+
+
+class DependencyMetadataTests(unittest.TestCase):
+    def test_manual_requirements_match_project_coreml_diffusion_spec(self):
+        project = tomllib.loads((REPO_ROOT / "pyproject.toml").read_text())
+        project_spec = next(
+            requirement
+            for requirement in project["project"]["dependencies"]
+            if requirement.lower().startswith("coreml-diffusion")
+        )
+        manual_specs = [
+            line.strip()
+            for line in (REPO_ROOT / "requirements.txt").read_text().splitlines()
+            if line.strip().lower().startswith("coreml-diffusion")
+        ]
+
+        self.assertEqual(len(manual_specs), 1)
+        self.assertEqual(manual_specs[0], project_spec)