fix(lint): resolve explicit any and useless assignment in DM components

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/components/dm/DiceRoller.astro

@@ -166,7 +166,17 @@ const quickDice = [
       }
 
       if (!raw) return [];
-      const parsed = JSON.parse(raw) as any[];
+      const parsed = JSON.parse(raw) as Array<{
+        result?: number;
+        total?: number;
+        rolls?: unknown[];
+        formula?: string;
+        notation?: string;
+        modifier?: number;
+        status?: "crit" | "fail" | "normal";
+        isCrit?: boolean;
+        isFail?: boolean;
+      }>;
 
       // Migrate old-format entries
       const migrated = parsed.map((entry) => {

src/components/dm/DmTabs.astro

@@ -172,7 +172,7 @@ if (activeTab && tabs.some((t) => t.id === activeTab)) {
       if (!focused || !focused.hasAttribute("data-tab")) return;
 
       const currentIndex = tabEls.indexOf(focused);
-      let nextIndex = currentIndex;
+      let nextIndex: number;
 
       switch (e.key) {
         case "ArrowRight":

src/components/dm/InitiativeTracker.astro

@@ -139,8 +139,16 @@ import { dmTranslations as T } from "@/i18n/dm-translations";
         const oldRaw = sessionStorage.getItem("it-combatants");
         if (oldRaw) {
           try {
-            const oldData = JSON.parse(oldRaw) as any[];
+            const oldData = JSON.parse(oldRaw) as Array<{
-            const migrated = oldData.map((c: any, index: number) => ({
+              id?: string;
+              name?: string;
+              modifier?: number;
+              initiative?: number;
+              hp?: number;
+              maxHp?: number;
+              active?: boolean;
+            }>;
+            const migrated = oldData.map((c, index) => ({
               id: c.id || `legacy-${index}-${Date.now()}`,
               name: c.name || 'Unknown',
               modifier: typeof c.modifier === 'number' ? c.modifier : 0,
@@ -156,7 +164,7 @@ import { dmTranslations as T } from "@/i18n/dm-translations";
         }
         return [];
       }
-      const parsed = JSON.parse(raw) as any[];
+      const parsed = JSON.parse(raw) as Array<{ id?: string }>;
 
       let migrated = false;
       const combatants = parsed.map((c) => {