Build the agenda and materials

[jinskeep-morpc]

Created from the Data Day 2027 master timeline (README.md).

• Finalize the agenda / session schedule — Jan 2027
• Update the website with the agenda — Jan 2027
• Collect session slide decks — Jan 2027
• Design/print brochures — early Feb 2027
• Upload slide decks to session laptops — Feb 2027