1.19.3 (2026-06-13)

• Memory fixes
  #1368
  #1417
  #1443

• Fix Repository.ident
  #1461

• Build/CI fixes and updates
  #1454
  #1459

• Documentation and annotation fixes
  #410
  #1289
  #1323
  #1333
  #1458
  #1460

• Add AGENTS.md file generated by Kimi-k2.6