devx: add a repo-managed pre-push CI gate

Add a versioned pre-push runner that mirrors the basic required CI suites we can execute locally, including version/changelog checks, Rust fmt/clippy/core checks, Python lint/typecheck/tests, docs, and the WASM gate.

Wire the runner into pre-commit at the pre-push stage, add make prepush and make hooks for manual use and hook installation, and document the workflow in the contribution guides.

Also add pre-commit to the development dependency set and refresh uv.lock so a synced dev environment can install and run the hook reproducibly.

docs/contributing.rst

@@ -26,6 +26,28 @@ Prerequisites: Rust stable toolchain, Python 3.10+, and ``maturin``.
    pytest tests/
 
 
+Git hooks and pre-push checks
+-----------------------------
+
+Install the repository-managed hooks after setting up the environment:
+
+.. code-block:: bash
+
+   make hooks
+
+Run the same push gate manually with:
+
+.. code-block:: bash
+
+   make prepush
+
+You can scope it to selected checks while iterating:
+
+.. code-block:: bash
+
+   make prepush CHECKS="version changelog python_lint"
+
+
 Adding a new indicator
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