Promote the v2 README to README.md ahead of the first v2 beta (#3014)

.pre-commit-config.yaml

@@ -42,7 +42,6 @@ repos:
         types: [python]
         language: system
         pass_filenames: false
-        exclude: ^README(\.v2)?\.md$
       - id: pyright
         name: pyright
         entry: uv run --frozen pyright
@@ -55,15 +54,9 @@ repos:
         language: system
         files: ^(pyproject\.toml|uv\.lock)$
         pass_filenames: false
-      # TODO(Max): Drop this in v2.
-      - id: readme-v1-frozen
-        name: README.md is frozen (v1 docs)
-        entry: README.md is frozen at v1. Edit README.v2.md instead.
-        language: fail
-        files: ^README\.md$
       - id: readme-snippets
         name: Check README snippets are up to date
         entry: uv run --frozen python scripts/update_readme_snippets.py --check
         language: system
-        files: ^(README\.v2\.md|docs_src/.*\.py|examples/.*\.py|scripts/update_readme_snippets\.py)$
+        files: ^(README\.md|docs_src/.*\.py|scripts/update_readme_snippets\.py)$
         pass_filenames: false