Improve deploy workflow and distribution configuration

[shadoath]

Summary

This PR refines the WordPress.org deployment workflow and distribution package configuration to improve reliability and clarity.

Key Changes

Deploy Workflow (deploy.yml)

• Tag filtering: Changed tag trigger from wildcard (*) to semantic versioning pattern ([0-9]+.[0-9]+.[0-9]+) to only deploy on valid version tags
• Dry-run input: Converted from string-based to proper boolean type in workflow inputs
  • Changed default: 'true' to default: true (boolean)
  • Updated input reference from inputs['dry-run'] == 'true' to inputs.dry-run for cleaner syntax
  • This ensures the dry-run parameter is properly typed and handled as a boolean throughout the workflow

Distribution Configuration (.distignore)

• Added /.distignore to the ignore list to exclude the distribution configuration file itself from packages
• Added /CLAUDE.md to exclude development/documentation files from distribution

Implementation Details

The workflow improvements ensure that:

1. Only properly versioned releases trigger automatic deployment
2. The dry-run parameter uses native GitHub Actions boolean type handling instead of string comparison
3. Distribution packages are cleaner by excluding configuration and development files

https://claude.ai/code/session_01DM75vWFtVxixaWhENsBT22