Add 260+ Claude Code skills from skills.sh

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Co-Authored-By: Claude <noreply@anthropic.com>

dev-browser/extension/services/StateManager.ts

@@ -0,0 +1,28 @@
+/**
+ * StateManager - Manages extension active/inactive state with persistence.
+ */
+
+const STORAGE_KEY = "devBrowserActiveState";
+
+export interface ExtensionState {
+  isActive: boolean;
+}
+
+export class StateManager {
+  /**
+   * Get the current extension state.
+   * Defaults to inactive if no state is stored.
+   */
+  async getState(): Promise<ExtensionState> {
+    const result = await chrome.storage.local.get(STORAGE_KEY);
+    const state = result[STORAGE_KEY] as ExtensionState | undefined;
+    return state ?? { isActive: false };
+  }
+
+  /**
+   * Set the extension state.
+   */
+  async setState(state: ExtensionState): Promise<void> {
+    await chrome.storage.local.set({ [STORAGE_KEY]: state });
+  }
+}