[recipes] Daily digest via Claude Code scheduled tasks

[matthallett1]

Summary

• Replaces the empty daily-digest stub with a working zero-infrastructure approach using Claude Code scheduled tasks + Open Brain MCP + Gmail MCP
• Adds a copyable skill file (daily-digest-skill.md) that users install locally and customize with their email
• Preserves the Supabase Edge Function approach as a planned "Approach B" for future contributors
• No OpenRouter, no Resend/SendGrid, no Edge Function deployment — just MCP tools users already have

What it requires

• Claude Code or Claude Desktop (Code mode)
• Open Brain MCP connected
• Gmail MCP connected

Tested

Tested on my own Open Brain instance (2,172 thoughts). Scheduled task fires, queries thoughts via MCP, creates a formatted Gmail draft grouped by type with topic/people tags.

Notes

This is an early proof-of-concept. The Gmail MCP creates drafts (not auto-send), so it's a one-tap-to-send workflow. The Edge Function approach (Approach B) remains as a placeholder for a future full auto-send implementation.

🤖 Generated with Claude Code

[github-actions]

OB1 Automated Review

✅ Folder structure — All files are in allowed directories
✅ Required files — README.md and metadata.json found in all contribution folders
✅ Metadata valid — All metadata.json files have required fields
✅ No credentials — No API keys, tokens, or secrets detected
✅ SQL safety — No destructive SQL or core table modifications
✅ Category artifacts — Required file types present for each category
✅ PR format — Title follows [category] Description format
✅ No binary blobs — No oversized or binary files
✅ README completeness — All READMEs include Prerequisites, Steps, and Expected Outcome
✅ Primitive dependencies — All declared primitive dependencies exist and are linked in README
✅ LLM clarity review — Covered by Claude PR Review workflow
✅ Remote MCP pattern — No local MCP server patterns detected — uses remote MCP correctly
✅ Tool audit link — Extensions/integrations link to the MCP Tool Audit guide
✅ Scope check — All changes are within the contribution folder(s)
✅ Internal links — All relative links in READMEs resolve to existing files

Result: All 15 checks passed! Ready for human review.

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Post-Merge Tasks

These don't block merge — they're reminders for admins after this PR lands.

• Post in OB1 Discord #show-and-tell

[matthallett1]

@claude review this PR

[shansen3]

Great upgrade — replaces the stub daily-digest recipe with an actionable Claude Code scheduled task approach. Clear prerequisites, numbered steps, troubleshooting section. Good to merge once CI is green.