Closes#9.
Auto-insert tracked homepage links in campaign compose, register them with
url_shortening_service, and put short piha.li URLs in SMS, email hrefs, and
postcard QR codes when SHORTENER_* is configured.
Classify payloads on /webhooks/smtp2go/ so one SMTP2GO webhook covers both channels under the 10-webhook limit; keep /email/ and /sms/ as aliases and harden SMS event matching.
Add merge tags for email/SMS, paginated removable recipients, PCM event panels for postcard campaigns, and a portal modal when phone/address matches an existing contact.
Add a Quill email editor with DB-backed image storage, selectable PCM designs, postcard defaults for addressed contacts, and merge-by-phone/address on the contact form.
PCM DirectMail v3 needs POST /auth/login (apiKey+apiSecret) before design/order calls; accept each subscription's copy-only signature secret via PCM_WEBHOOK_SECRETS.
Unignore site/ (was blocked by mkdocs /site rule), add compose/Docker/uv tooling, and split deploys so push to main goes to beta while prod stays manual.
westfarn