feat(sprint1-step6): polish, landing page, responsive, deploy config

- Landing.jsx : écran d'accueil "Entrer dans le Marais" sur /
- Home.jsx : jeu sur /jeu, click animation float-up, sidebar responsive
- formatNumber.ts : util partagé k/M/B/T (remplace 4 copies locales)
- home.scss : rewrite classes (game-cover, click-zone, tadpole-sprite, game-sidebar)
- Responsive : sidebar fixe desktop, drawer bottom mobile (<768px)
- navbar : wildCoin → resource-counter, auth-nav stylé, dead code supprimé
- GameSync.tsx : bridge useSaveSync ↔ Zustand (câblé dans App)
- tadpole.svg : asset renommé (SantaClause-bag → tadpole)
- deploy/ : Apache vhost SPA+proxy, deploy.sh, ecosystem.config.cjs PM2
- NavBarData : Jeu → /jeu
- Cleanup : dead imports, commentaires legacy

deploy/deploy.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+# deploy.sh — Build & deploy clickerz to VPS
+# Usage: ssh vps 'cd /opt/clickerz && bash deploy/deploy.sh'
+
+set -euo pipefail
+
+echo "=== Clickerz deploy ==="
+
+# 1. Pull latest
+git pull --ff-only
+
+# 2. Build frontend
+echo "--- Building frontend..."
+cd Frontend
+npm ci --production=false
+npm run build
+echo "--- Copying dist to /var/www/clickerz..."
+sudo rm -rf /var/www/clickerz
+sudo cp -r dist /var/www/clickerz
+cd ..
+
+# 3. Backend deps
+echo "--- Installing backend deps..."
+cd Backend
+npm ci --production
+cd ..
+
+# 4. Run migrations
+echo "--- Running DB migrations..."
+cd Backend
+npm run db:migrate
+cd ..
+
+# 5. Restart pm2
+echo "--- Restarting pm2..."
+pm2 startOrRestart ecosystem.config.cjs --env production
+pm2 save
+
+echo "=== Deploy complete ==="