Add CodeMash conference data

[orenodinner]

/claim #10

Summary

• Add CodeMash to the conference dataset table.
• Preserve the existing six-column README schema and alphabetical placement before Code Europe.
• Use conservative values where no public Speaker Engagement Agreement commitment was found.

Source notes

• Current conference site: https://codemash.org/
• Organizer/about page: https://codemash.org/About/
• Speaker benefits page: https://codemash.org/call-for-speakers-announcement/
• CodeMash 2026 Sessionize CFP: https://sessionize.com/codemash-2026/

Data choices

• Sign SEA?: No, because I did not find a public statement that CodeMash signs the Speaker Engagement Agreement.
• Free Ticket?: Yes, based on public speaker-benefit / CFP material.
• Reimburse Expenses?: Partial, because public material describes lodging or housing support rather than full travel, lodging, and per diem coverage.
• Compensate Speakers?: Workshops, based on the PreCompiler workshop honorarium language.

Validation

• git diff --check
• README table validation: 12 conference data rows, all with 6 columns.
• Source link checks returned HTTP 200 for the four source URLs above.

Demo

• https://github.com/orenodinner/conference-data/releases/download/codemash-demo-pr/conference-data-codemash-demo.mp4

AI-assisted implementation, manually reviewed before submission.

[orenodinner]

/claim #10

PR #368 is the submitted solution for the CodeMash conference data bounty. It adds the CodeMash row, preserves the six-column table, includes public sources and validation, and links the demo video in the PR body.