feat: add Prettier configuration for consistent code formatting

- Add .prettierignore with comprehensive exclusion patterns
- Add .prettierrc.yml with project-specific formatting rules
- Configure YAML-specific overrides for workflow files

Author: mrz1836

.github/.prettierignore

@@ -0,0 +1,73 @@
+# Directories managed by package managers or VCS
+node_modules/
+vendor/
+.git/
+
+# Build outputs
+dist/
+build/
+
+# Coverage artifacts
+coverage/
+*.cover
+*.cov
+coverage.txt
+coverage.html
+
+# Minified assets
+*.min.js
+*.min.css
+
+# Generated source code
+*.generated.*
+**gen.go
+mock**.go
+*.pb.go
+*.pb.gw.go
+**/packaged.yaml
+
+# Compiled binaries
+*.exe
+*.dll
+*.so
+*.dylib
+*.test
+*.out
+
+# Temporary / swap files
+*.tmp
+*.temp
+*.swp
+*.swo
+*~
+
+# IDE metadata
+.idea/
+.vscode/
+*.iml
+
+# Dependency locks
+go.sum
+package-lock.json
+yarn.lock
+
+# Data exports
+*.json
+*.csv
+*.tsv
+*.sql
+
+# Documentation & licenses
+*.md
+LICENSE
+CHANGELOG
+CITATION.cff
+
+# Build & lint configs
+**/.golangci.json
+**/.golangci.yml
+**/.golangci.yaml
+**/.env.shared
+**/Makefile
+**/makefile
+**/*.mk

.github/.prettierrc.yml

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+# ------------------------------------------------------------------------------------
+#  Prettier Configuration
+#
+#  Purpose: Ensures consistent YAML formatting across all tools (Prettier, IDEs)
+#  Location: .github directory (preferred for project-specific configs)
+#
+#  Maintainer: @mrz1836
+#
+# ------------------------------------------------------------------------------------
+
+# Print width (line length limit)
+printWidth: 80
+
+# Indentation
+tabWidth: 2
+useTabs: false
+
+# Quotes
+singleQuote: false # Use double quotes for consistency
+
+# Brackets and spacing (applies to JS/JSON objects, not YAML arrays)
+bracketSpacing: false # Keep consistent with YAML array formatting
+bracketSameLine: false
+
+# Array and object formatting
+trailingComma: "none" # No trailing commas in YAML
+
+# Line endings (should match .editorconfig)
+endOfLine: "lf"
+
+# Prose formatting (for Markdown in YAML)
+proseWrap: "preserve"
+
+# YAML-specific settings
+overrides:
+  - files: "*.{yml,yaml}"
+    options:
+      printWidth: 120 # Allow longer lines for YAML workflow files
+      bracketSpacing: false
+      singleQuote: false