- image_reveal becomes its own game mode: GameType gains "image"; the quiz
pool is filtered by allowed formats derived from gameType (image →
image_reveal only, quiz → mcq/truefalse/free, mixed → all). loadQuizPool
takes a formats list; pool fallback respects it.
- lobby settings reworked into a refined "Réglages" card: 4 mode tiles
(icon + label, locked <3 players for blindtest/mixed), question count as a
stepper, blindtest config grouped; dynamic label for image mode + hint.
- admin: real upload button (hidden input + styled Button with Upload icon)
instead of the bare file input.
- app title set to "NerdWare …" in index.html (+ lang fr, description).
Verified e2e: image mode serves only image_reveal questions (with imageUrl).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
