Refonte mini-player flottant, nettoyage GrateWizard, corrections UI

- PlayerPersistent: widget compact pill + panneau extensible, aligné au contenu
- BookPlayer: ajustements scroll mode, suppression bordures boutons
- UnoCSS: ajout border-none au shortcut btn-ghost
- GrateWizard: suppression composants, services et utils obsolètes
- Ajout du PDF source des paroles (media/)
- Mises à jour config et dépendances

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -10,15 +10,12 @@
     "postinstall": "nuxt prepare"
   },
   "dependencies": {
-    "@geoman-io/leaflet-geoman-free": "^2.19.2",
     "@nuxt/content": "^3.11.2",
     "@nuxt/image": "^2.0.0",
     "@pinia/nuxt": "^0.11.3",
     "@unocss/nuxt": "^66.6.0",
     "@vueuse/nuxt": "^14.2.1",
     "better-sqlite3": "^12.6.2",
-    "leaflet": "^1.9.4",
-    "leaflet.markercluster": "^1.5.3",
     "nuxt": "^4.3.1",
     "vue": "^3.5.28",
     "vue-router": "^4.6.4",
@@ -27,7 +24,6 @@
   "devDependencies": {
     "@iconify-json/lucide": "^1.2.91",
     "@iconify-json/ph": "^1.2.2",
-    "@types/leaflet": "^1.9.21",
     "typescript": "^5.9.3",
     "unocss": "^66.6.0"
   },