Mount @logicsrc/plugin-agentmail in the CommandBoard API so members can
list/read/search/send mail over the existing agentbbs Mailu server.
- src/agentmail.ts: inject imapflow + nodemailer + mailparser drivers into
the plugin's Mailu transport (kept out of the plugin by design); env-driven
builder (AGENTMAIL_BACKEND=mailu → bbs Mailu, else in-memory singleton for
dev/test). Handles STARTTLS cert-vs-loopback via AGENTMAIL_SMTP_TLS_SERVERNAME.
- index.ts: register agentMailPlugin + 7 routes under /api/plugins/agentmail/*
(mailboxes, list, read, search, send, PATCH flags, delete). Acting member
from x-agentmail-member header (else AGENTMAIL_MEMBER), paid-gated;
MailAccessError->402, DraftError->422.
- 6 route tests (in-memory backend) + contract test plugin-id list updated.
commandboard-api 20/20, builds clean.
Note: run `npm install` to refresh the lockfile for the 3 new deps.
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
