Replaces the four legacy hardcoded emoji arrays (settings avatar,
onboarding-create, CreateCollectiveModal, manage-collective rename) with
`<EmojiPicker selected={…} onSelect={…} />`. The shared component
delivers ~280 codepoints across 4 tabs instead of the previous 8–24
per surface, with consistent layout and behaviour.
Backwards-incompatible testid change on the manage page: the old
`collective-emoji-option-{e}` per-cell testid is gone — every cell now
lives under the picker's `emoji-picker-cell-{e}` namespace. Two existing
specs (onboarding O-02 + rename MC-01a) are updated to drive the new
tab → cell flow.
New e2e file `tests/e2e/emoji-picker.test.ts` covers EP-E-01..02:
- EP-E-01 — Ana on /settings picks 🍎 from "Comida"; DB row updates.
- EP-E-02 — Eva on /onboarding creates a collective with 🐱 from
"Animales"; sidebar reflects the choice.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
