add blog post

[joshunrau]

Summary by CodeRabbit

• Documentation
  • Added documentation for Open Data Capture v2.0 file instruments, enabling secure participant file uploads with configurable restrictions, S3-compatible storage integration, and controlled rollout via feature flag.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 149b80b4-432b-4e23-94fc-7c04dbc8273d

📥 Commits

Reviewing files that changed from the base of the PR and between de4b788 and 0f28260.

📒 Files selected for processing (1)

• blog/open-data-capture-v2.md

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Walkthrough

New blog post documenting Open Data Capture v2.0 file instruments. Introduces file-group structures for collecting participant uploads, describes S3-compatible presigned URL workflows for browser transfers, explains inherited access control, and documents opt-in storage configuration via STORAGE_ENABLED flag with bundled or custom provider options.

Changes

File Instruments Documentation

Layer / File(s)	Summary
File instruments guide blog/open-data-capture-v2.md	Documentation page with YAML front-matter introducing file instruments: versioned instruments with file-group definitions (basename, file types, count constraints), presigned upload/download flows, inherited permission model, and opt-in storage rollout controlled by STORAGE_ENABLED flag (bundled RustFS or BYO S3-compatible storage), plus reference to v2.0.0 migration guide.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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