The legal brief on third-party trademark use says: avoid the WhatsApp
teal/green palette and any visual treatment that could read as a
WhatsApp/Meta product. Emerald-500 was used as the primary brand colour
across hero, CTAs, sidebar, charts, badges, and the favicon — close
enough in hue to WhatsApp's signature green to muddy the line.
Swapping to Tailwind violet (which matches the Hostinger brand purple
#7c3aed) makes the visual identity unambiguously ours.
Scope:
- Mechanical Tailwind class swap: emerald-* → violet-* across src/.
- src/app/globals.css: --primary, --ring, --sidebar-primary, --sidebar-ring,
--chart-1 oklch tokens swapped from emerald (oklch 0.696 0.17 162) to
Hostinger-aligned violet (oklch 0.526 0.247 293).
- src/app/icon.tsx: favicon background #10b981 → #7c3aed.
- src/app/opengraph-image.tsx: badge bg, accent text, gradient.
- src/components/landing/hero.tsx + cta-banner.tsx: radial-gradient hex.
- src/components/landing/mock/analytics-mock.tsx: marketing chart line.
- src/components/dashboard/conversations-chart.tsx + response-time-chart.tsx:
"Outgoing" series colour. Distinguishable from "Incoming" blue at a
glance; we can revisit the chart pair later for stronger colourblind
contrast (separate concern).
- README.md: license badge colour parameter.
Out of scope:
- src/components/settings/tag-manager.tsx still offers "Emerald" as one
of the user-pickable contact-tag colours alongside Blue / Yellow / Red
/ etc. — that's a user data choice, not a brand mark.
Contrast check: white text on #7c3aed measures ~4.78:1 (WCAG AA passing
for normal body text). Violet-400 (#a78bfa) on slate-950 measures ~10:1
for accent text, well clear of AA.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Three correctness bugs were making the existing broadcast flow wrong,
not just incomplete.
1. Per-recipient variables were broken
use-broadcast-sending.ts computed templateParams per contact but shipped
only templateParams[0] to the API, so every contact in a batch received
contact 0's personalization (name/email/etc).
Fix: extend POST /api/whatsapp/broadcast to accept a per-recipient
shape `{ recipients: [{ phone, params }], ... }`. Legacy
`{ phone_numbers, template_params }` still accepted. Hook sends per-
recipient payloads; API returns whatsapp_message_id per phone.
2. Webhook never updated broadcast_recipients
handleStatusUpdate in webhook/route.ts only mirrored Meta status onto
the `messages` table. broadcast_recipients had no correlation column,
so delivered_count / read_count / replied_count never advanced for
real broadcasts.
Fix (migration 003):
- broadcast_recipients.whatsapp_message_id (+ UNIQUE index) for
Meta-message-id correlation
- composite index (broadcast_id, status) for fast aggregate scans
- AFTER INSERT/UPDATE/DELETE trigger that recomputes parent
broadcasts counts via COUNT(*) FILTER — sender + webhook only
touch the recipient row, aggregates stay consistent
Webhook:
- handleStatusUpdate also updates broadcast_recipients with forward-
only status guard (read cannot regress to sent on a replay)
- processMessage flags the replied recipient row when an inbound
message arrives from a recent broadcast contact
3. Rate limiting did not match spec
Batch 50 / no delay → Batch 10 / 1s between batches, matching the spec
and Meta's per-phone-number rate ceiling.
Also: extract statusConfig from both page components into
src/lib/broadcast-status.ts (single source of truth for PR B). Add
whatsapp_message_id to BroadcastRecipient type.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
