[vcnainala]

Replaces the Zapier "Add new inbound emails to GitHub as new issues" Zap, which created a new issue for every reply because it matched on the raw subject (`Re: ...`).

How it works

• `deployment/email-relay`: a Cloudflare Email Worker. It parses the incoming email, strips quoted reply history, and triggers the workflow via `workflow_dispatch`. An optional `ALLOWED_SENDERS` allowlist is supported.
• `.github/workflows/email-to-issue.yml`: removes `Re:`/`Fwd:`/`AW:`/`WG:` prefixes from the subject and searches open issues for an exact title match. If one is found, the email is added as a comment (sender + text); otherwise a new issue is created.

Setup (after this reaches `main`; workflow_dispatch only works for workflows on the default branch)

1. Create a fine-grained PAT scoped to `Steinbeck-Lab/coconut` with Actions: Read and write.
2. `cd deployment/email-relay && npm install && npx wrangler secret put GITHUB_TOKEN && npx wrangler deploy`
3. In Cloudflare Email Routing for the domain, add a custom address (e.g. `issues@`) with action Send to a Worker → `coconut-email-relay`.
4. Point senders/forwarding at that address and turn the Zap off.

Testing

• Locally: the worker was run against a sample reply email (subject normalized, quoted history removed, allowlist rejection) and `wrangler deploy --dry-run` builds.
• Workflow: can be run manually from the Actions tab with a subject/body once on `main`.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 22.74%. Comparing base (a4c26c6) to head (84aa620).
⚠️ Report is 26 commits behind head on development.

Additional details and impacted files

@@                Coverage Diff                 @@
##             development     #867       +/-   ##
==================================================
+ Coverage           6.14%   22.74%   +16.59%     
- Complexity          1736     2361      +625     
==================================================
  Files                227      261       +34     
  Lines               8945    11137     +2192     
==================================================
+ Hits                 550     2533     +1983     
- Misses              8395     8604      +209     

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