Actor sheet -> working !!!, not WIP for rolls

module/applications/sheets/base-actor-sheet.mjs

@@ -131,7 +131,12 @@ export class VermineBaseActorSheet extends HandlebarsApplicationMixin(foundry.ap
   // ── Actions ─────────────────────────────────────────────────────────
 
   _onRender(context, options) {
-    super._onRender(context, options)
+    // Activate initial tabs (force to bypass changeTab's early-return when the
+    // tab is already set as active in tabGroups — Foundry v12 doesn't call
+    // changeTab on initial render, so the active class is never applied)
+    for (const [group, tab] of Object.entries(this.tabGroups ?? {})) {
+      this.changeTab(tab, group, {force: true})
+    }
     this.#dragDrop.forEach(d => d.bind(this.element))
     this.element.querySelectorAll(".rollable").forEach(el => {
       el.addEventListener("click", this._onRoll.bind(this))

module/applications/sheets/character-sheet.mjs

@@ -12,7 +12,6 @@ export class VermineCharacterSheetV2 extends VermineBaseActorSheet {
   }
 
   static PARTS = {
-    header: { template: "systems/vermine2047/templates/actor/appv2/character-header.hbs" },
     main: { template: "systems/vermine2047/templates/actor/appv2/character-main.hbs" },
     tabs: { template: "templates/generic/tab-navigation.hbs" },
     abilities: { template: "systems/vermine2047/templates/actor/appv2/character-abilities.hbs" },