chore: remove generated lockfiles, simplify deps, update pre-commit and ignore .python-version

- delete requirements.txt and uv.lock (remove exported/locked artefacts)
- remove .python-version file and add .python-version / uv.lock to .gitignore
- simplify pyproject.toml dependency pins (use package names instead of explicit version specifiers)
- update pre-commit hooks revisions and remove uv-pre-commit hooks (rev bumps for add-trailing-comma, pyupgrade, ruff-pre-commit, actionlint)

.pre-commit-config.yaml

@@ -1,14 +1,7 @@
 repos:
-  # Ensure the lockfile is up-to-date and autoexport uv.lock to requirements.txt
-  - repo: https://github.com/astral-sh/uv-pre-commit
-    rev: 0.8.13
-    hooks:
-      - id: uv-lock
-      - id: uv-export
-
   # Automatically add trailing commas to calls and literals.
   - repo: https://github.com/asottile/add-trailing-comma
-    rev: v3.2.0
+    rev: v4.0.0
     hooks:
       - id: add-trailing-comma
 
@@ -38,14 +31,14 @@ repos:
 
   # Run Pyupgrade on all Python files. This will upgrade the code to Python 3.12.
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.20.0
+    rev: v3.21.0
     hooks:
       - id: pyupgrade
         args: ["--py312-plus"]
 
   # An extremely fast Python linter and formatter.
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.12.10
+    rev: v0.14.0
     hooks:
       - id: ruff-format
       - id: ruff
@@ -53,6 +46,6 @@ repos:
 
   # Static checker for GitHub Actions workflow files.
   - repo: https://github.com/rhysd/actionlint
-    rev: v1.7.7
+    rev: v1.7.8
     hooks:
       - id: actionlint