ci: add prek/pre-commit hooks (prettier, markdownlint, editorconfig, yamllint, air)

.pre-commit-config.yaml

@@ -0,0 +1,37 @@
+# cSpell:ignore autofix autoupdate
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v6.0.0
+    hooks:
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
+        args:
+          - --markdown-linebreak-ext=md
+  - repo: https://github.com/DavidAnson/markdownlint-cli2
+    rev: v0.22.1
+    hooks:
+      - id: markdownlint-cli2
+  - repo: https://github.com/rbubley/mirrors-prettier
+    rev: v3.8.4
+    hooks:
+      - id: prettier
+  - repo: https://github.com/posit-dev/air-pre-commit
+    rev: 0.8.2
+    hooks:
+      - id: air-format
+  - repo: https://github.com/editorconfig-checker/editorconfig-checker
+    rev: v3.7.0
+    hooks:
+      - id: editorconfig-checker
+  - repo: https://github.com/adrienverge/yamllint.git
+    rev: v1.38.0
+    hooks:
+      - id: yamllint
+        args: [--strict, -c=.yamllint.yaml]
+  - repo: local
+    hooks:
+      - id: yaml-file-extension
+        name: Check if YAML files has *.yaml extension.
+        entry: YAML filenames must have .yaml extension.
+        language: fail
+        files: .yml$

.yamllint.yaml

@@ -0,0 +1,19 @@
+rules:
+  comments:
+    require-starting-space: false
+    ignore-shebangs: true
+    min-spaces-from-content: 1
+  braces:
+    min-spaces-inside-empty: 0
+    max-spaces-inside-empty: 0
+    min-spaces-inside: 0
+    max-spaces-inside: 1
+  document-start:
+    present: false
+  indentation:
+    spaces: 2
+    indent-sequences: true
+  # .crow/* workflows embed long single-line R commands (>1k chars)
+  line-length: disable
+  new-lines:
+    type: unix