[feat] Set up uv and precommit (#2)

Author: sfc-gh-bnisco

.editorconfig

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+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.py]
+indent_style = space
+indent_size = 4
+
+[*.json]
+indent_style = space
+indent_size = 2

.gitattributes

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+uv.lock linguist-generated=true

.github/workflows/pre-commit.yml

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+name: pre-commit
+
+on:
+  pull_request:
+  push:
+    branches: ["main"]
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Set up uv
+        uses: astral-sh/setup-uv@v7
+        with:
+          python-version: "3.12"
+
+      - name: Install dev dependencies
+        run: uv sync --dev
+
+      - name: Run pre-commit (all files)
+        run: uv run pre-commit run --all-files

.pre-commit-config.yaml

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+minimum_pre_commit_version: "3.0.0"
+
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v6.0.0
+    hooks:
+      - id: check-added-large-files
+      - id: check-ast
+      - id: check-json
+      - id: check-merge-conflict
+      - id: debug-statements
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
+
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.14.14
+    hooks:
+      - id: ruff
+        args: ["--fix", "--exit-non-zero-on-fix"]
+      - id: ruff-format
+
+  # Prettier runs via a local Node hook so we can pin to the latest Prettier.
+  - repo: local
+    hooks:
+      - id: prettier-json
+        name: prettier (json)
+        language: node
+        additional_dependencies: ["prettier@3.8.1"]
+        entry: prettier --write
+        files: "\\.json$"

README.md

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+# gallery
+
+Scripts-first repo with:
+
+- `pre-commit` for consistent checks on commit
+- Ruff for Python linting/formatting
+- Prettier for JSON formatting
+
+## Setup (local)
+
+Create a virtualenv and install dev tools:
+
+```bash
+uv venv
+source .venv/bin/activate
+uv sync --dev
+```
+
+Install git hooks:
+
+```bash
+pre-commit install
+```
+
+Run all hooks:
+
+```bash
+pre-commit run --all-files
+```
+
+Note: `pre-commit` will also set up an isolated Node environment to run Prettier.
+
+## Layout
+
+- `scripts/`: runnable scripts

pyproject.toml

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+[project]
+name = "gallery"
+version = "0.0.0"
+description = "Metadata repo for Streamlit."
+readme = "README.md"
+requires-python = ">=3.12"
+dependencies = []
+
+[dependency-groups]
+dev = ["pre-commit", "ruff"]
+
+[tool.ruff]
+target-version = "py312"
+line-length = 100
+
+[tool.ruff.lint]
+select = ["E", "F", "I", "B", "UP", "SIM", "RUF"]
+ignore = ["E501"]
+
+[tool.ruff.format]
+quote-style = "double"
+indent-style = "space"
+line-ending = "auto"