Groups (E2E via pairwise fan-out — sender encrypts each message separately to
every member with existing Signal sessions; server holds only name+membership):
- migration 0003: groups + group_members; routes/groups.js (create/list/get/add/leave)
- client: unified DM+group chat model, group create modal w/ member chips,
fan-out deliver, groupId payload routing on receive, lazy group fetch,
sender names in group bubbles, group info + leave
UI overhaul — glassmorphism redesign:
- animated aurora backdrop, blurred glass panels, violet→cyan gradient brand
- color-hashed gradient avatars (per name), group avatars
- message bubbles with rise animation + tails, gradient outgoing bubbles
- polished auth card w/ gradient border, pill actions, modal pop-in, toast styling
- responsive: full-width thread on mobile with back button
Verified live: 3-user group message fans out and both members decrypt.
SW cache v4->v5.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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