feat: implémentation complète du système Célestopol 1922 pour FoundryVTT v13

- DataModels (character, npc, anomaly, aspect, attribute, equipment)
- ApplicationV2 sheets (character 5 tabs, npc 3 tabs, 4 item sheets)
- DialogV2 pour les jets de dés avec phase de lune
- Templates Handlebars complets (fiches PJ/PNJ, items, jet, chat)
- Styles LESS → CSS compilé (thème vert foncé / orange CopaseticNF)
- i18n fr.json complet (clés CELESTOPOL.*)
- Point d'entrée fvtt-celestopol.mjs avec hooks init/ready
- Assets : polices CopaseticNF, images UI, icônes items
- Mise à jour copilot-instructions.md avec l'architecture réelle

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

styles/npc.less

@@ -0,0 +1,117 @@
+@import "mixins";
+
+// ─── NPC sheet specifics ─────────────────────────────────────────────────────
+
+.celestopol.npc-sheet {
+
+  .stats-grid {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 12px;
+    padding: 8px 0;
+
+    .stat-block {
+      border: 1px solid var(--cel-border);
+      border-radius: 4px;
+      overflow: hidden;
+
+      .stat-header {
+        background: var(--cel-green);
+        color: var(--cel-orange);
+        display: flex;
+        justify-content: space-between;
+        align-items: center;
+        padding: 4px 8px;
+
+        .stat-name {
+          font-family: var(--cel-font-title);
+          font-weight: bold;
+          text-transform: uppercase;
+          font-size: 0.9em;
+        }
+
+        .stat-res {
+          display: flex;
+          align-items: center;
+          gap: 4px;
+          font-size: 0.8em;
+
+          label { color: var(--cel-orange-light); }
+          .stat-res-value { font-weight: bold; color: var(--cel-orange); }
+          .stat-actuel {
+            font-size: 0.9em;
+            color: rgba(255,200,0,0.7);
+            font-style: italic;
+          }
+          input[type="number"] { width: 30px; .cel-input-std(); }
+        }
+      }
+
+      .skills-list {
+        background: var(--cel-cream);
+
+        .skill-row {
+          display: flex;
+          align-items: center;
+          justify-content: space-between;
+          padding: 3px 8px;
+          border-bottom: 1px solid rgba(139,115,85,0.2);
+          font-size: 0.85em;
+
+          &.rollable { .cel-rollable(); }
+
+          .skill-name { flex: 1; }
+          .skill-value { font-weight: bold; color: var(--cel-green); min-width: 24px; text-align: center; }
+          .skill-value-input { width: 36px; .cel-input-std(); text-align: center; }
+        }
+      }
+    }
+  }
+
+  .track-section {
+    border: 1px solid var(--cel-border);
+    border-radius: 4px;
+    margin-bottom: 8px;
+    overflow: hidden;
+
+    .track-header {
+      background: var(--cel-green);
+      color: var(--cel-orange);
+      padding: 4px 8px;
+      font-family: var(--cel-font-title);
+      font-weight: bold;
+      text-transform: uppercase;
+      font-size: 0.9em;
+    }
+
+    .track-boxes {
+      display: flex;
+      padding: 8px;
+      gap: 6px;
+      background: var(--cel-cream);
+
+      .track-box {
+        display: flex;
+        flex-direction: column;
+        align-items: center;
+        gap: 2px;
+        .box-label { font-size: 0.65em; color: var(--cel-border); }
+      }
+    }
+
+    .track-level {
+      display: flex;
+      align-items: center;
+      gap: 6px;
+      padding: 4px 8px;
+      background: rgba(139,115,85,0.1);
+      font-size: 0.85em;
+      input[type="number"] { width: 40px; .cel-input-std(); }
+    }
+  }
+
+  .description-section {
+    margin-top: 8px;
+    .enriched-html { font-size: 0.9em; line-height: 1.6; }
+  }
+}