Merge branch 'dev'

Release package includes:
- Parent product default pricing for variable products
- Hide empty table headers in admin area
- Package size: 433KB (383 files)
- Checksums: MD5 and SHA256 generated

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

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releases/wc-tier-and-package-prices-1.2.5.zip.sha256

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