feat: add prettier config file

- Create .prettierrc.yaml with formatting options
- Configure YAML, JSON, and Markdown specific settings
- Remove TODO comment from justfile

Author: nsheaps

.github/actions/lint-files/action.yaml

@@ -19,7 +19,7 @@ runs:
       id: lint
       shell: bash
       run: |
-        set +e
+        set +eou pipefail
         HAS_ERRORS=false
         FIX="${{ inputs.fix }}"
 

.prettierrc.yaml

@@ -0,0 +1,24 @@
+# Prettier configuration
+# https://prettier.io/docs/en/configuration.html
+
+# General settings
+printWidth: 100
+tabWidth: 2
+useTabs: false
+endOfLine: lf
+
+# Only format these file types
+overrides:
+  - files:
+      - "*.yaml"
+      - "*.yml"
+    options:
+      singleQuote: true
+  - files:
+      - "*.json"
+    options:
+      trailingComma: none
+  - files:
+      - "*.md"
+    options:
+      proseWrap: preserve

justfile

@@ -21,10 +21,9 @@ setup:
     mise install -y
     @echo "Setup complete!"
 
-# Run all linters
+# Run all linters (uses .prettierrc.yaml for config)
 lint:
     command -v prettier >/dev/null 2>&1 || { just setup ; }
-    # TODO convert to use prettier config file
     prettier --write "**/*.{yaml,yml,json,md}" --list-different
 
 lint-check: