Initial release v1.2.0 — Hellion NewTab Browser Extension

Persoenlicher Bookmark-Dashboard als Browser-Extension.
8 Themes, Drag & Drop, Sticky Notes, JSON Export/Import.
Chrome, Edge, Brave, Opera, Vivaldi (MV3) + Firefox (MV2).

Includes GitHub Actions for security scanning, code quality
validation, and automated release packaging.

src/js/storage.js

@@ -0,0 +1,59 @@
+/* =============================================
+   HELLION NEWTAB — storage.js
+   Abstraction Layer: chrome.storage.local / localStorage
+   ============================================= */
+
+const Store = {
+  QUOTA_WARNING_BYTES: 8 * 1024 * 1024, // 8 MB Warnung (Limit ist 10 MB)
+
+  get(key) {
+    return new Promise(resolve => {
+      if (typeof chrome !== 'undefined' && chrome.storage) {
+        chrome.storage.local.get([key], r => resolve(r[key] ?? null));
+      } else {
+        try { resolve(JSON.parse(localStorage.getItem(key))); }
+        catch { resolve(null); }
+      }
+    });
+  },
+
+  set(key, value) {
+    return new Promise((resolve, reject) => {
+      if (typeof chrome !== 'undefined' && chrome.storage) {
+        chrome.storage.local.set({ [key]: value }, () => {
+          if (chrome.runtime.lastError) {
+            console.error('Storage-Fehler:', chrome.runtime.lastError.message);
+            alert('Speicher voll! Bitte lösche alte Boards oder das Hintergrundbild, um Platz zu schaffen.');
+            reject(new Error(chrome.runtime.lastError.message));
+            return;
+          }
+          resolve();
+        });
+      } else {
+        try {
+          localStorage.setItem(key, JSON.stringify(value));
+          resolve();
+        } catch (e) {
+          console.error('Storage-Fehler:', e.message);
+          alert('Speicher voll! Bitte lösche alte Boards oder das Hintergrundbild, um Platz zu schaffen.');
+          reject(e);
+        }
+      }
+    });
+  },
+
+  async checkQuota() {
+    if (typeof chrome !== 'undefined' && chrome.storage && chrome.storage.local.getBytesInUse) {
+      return new Promise(resolve => {
+        chrome.storage.local.getBytesInUse(null, bytes => {
+          if (bytes > Store.QUOTA_WARNING_BYTES) {
+            const usedMB = (bytes / 1024 / 1024).toFixed(1);
+            console.warn('Storage-Warnung: ' + usedMB + ' MB von 10 MB belegt.');
+          }
+          resolve(bytes);
+        });
+      });
+    }
+    return 0;
+  }
+};