feat: extension skeleton with manifest, settings module, and placeholder icons

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/settings.js

@@ -0,0 +1,46 @@
+(function () {
+  "use strict";
+
+  const DEFAULTS = {
+    enabled: true,
+    darkMode: "auto",
+    "light.subredditBgColor": "transparent",
+    "light.subredditBorderColor": "#c84a20",
+    "light.subredditTextColor": "#c84a20",
+    "light.commentsBgColor": "#e0e0e0",
+    "light.commentsBorderColor": "#4a4a4a",
+    "light.commentsTextColor": "#4a4a4a",
+    "dark.subredditBgColor": "transparent",
+    "dark.subredditBorderColor": "#ff6b3d",
+    "dark.subredditTextColor": "#ff6b3d",
+    "dark.commentsBgColor": "#3a3a3a",
+    "dark.commentsBorderColor": "#888888",
+    "dark.commentsTextColor": "#cccccc",
+    subredditColors: {},
+  };
+
+  async function loadSettings() {
+    const stored = await browser.storage.local.get(null);
+    return Object.assign({}, DEFAULTS, stored);
+  }
+
+  async function saveSettings(settings) {
+    const toStore = {};
+    for (const key of Object.keys(settings)) {
+      if (key in DEFAULTS) {
+        toStore[key] = settings[key];
+      }
+    }
+    await browser.storage.local.set(toStore);
+  }
+
+  async function resetSettings() {
+    await browser.storage.local.clear();
+  }
+
+  window.RedditTweaks = window.RedditTweaks || {};
+  window.RedditTweaks.DEFAULTS = DEFAULTS;
+  window.RedditTweaks.loadSettings = loadSettings;
+  window.RedditTweaks.saveSettings = saveSettings;
+  window.RedditTweaks.resetSettings = resetSettings;
+})();