chore: pin dev dependencies and restore uv check in codegen

Author: damaz91

generate_models.sh

@@ -27,6 +27,13 @@ if ! command -v git &> /dev/null; then
     exit 1
 fi
 
+# Check if uv is installed before cloning or modifying generated files
+if ! command -v uv &> /dev/null; then
+    echo "Error: uv not found."
+    echo "Please install uv: curl -LsSf https://astral.sh/uv/install.sh | sh"
+    exit 1
+fi
+
 # UCP Version to use (if provided, use release/$1 branch; otherwise, use main)
 if [ -z "$1" ]; then
     BRANCH="main"

pyproject.toml

@@ -27,7 +27,12 @@ dependencies = [
 
 [dependency-groups]
 dev = [
-    "datamodel-code-generator[http,ruff]>=0.50.0",
+    # Exact pins: the model-drift CI job regenerates the models against the
+    # pinned UCP spec and asserts byte-identical output, so the codegen
+    # toolchain must resolve reproducibly. Bump these pins and regenerate
+    # the models in the same PR.
+    "datamodel-code-generator[http]==0.71.0",
+    "ruff==0.16.1",
 ]
 
 [build-system]