Correct newer iPhone and iPad metadata #505

Comparing current master with Apple support metadata and the kudit/Device catalog reveals several likely corrections:

• iPhone15,3

  • Current PPI: 458
  • Expected PPI: 460

• iPadAir13M4

  • Current diagonal: 12.9
  • Expected diagonal: 13.0

• iPadPro13M5

  • Current support article: 125406
  • Expected 13-inch M5 support article: 125407

• Missing support links appear for:

  • iPhone 16
  • iPhone 16 Plus
  • iPhone 16 Pro
  • iPhone 16 Pro Max
  • iPhone 17
  • iPhone 17 Pro
  • iPhone 17 Pro Max
  • iPhone 17e
  • iPad Air 11-inch and 13-inch M3
  • iPad Air 11-inch and 13-inch M4

The corresponding Apple support identifiers are available in the comparison output and in the kudit/Device catalog:

https://github.com/kudit/Device

Please verify each support article before committing the generated source, then add regression coverage for the corrected PPI, diagonal, support article, and non-empty URL fields.