feat: Implement basic general folder support (#2051)

- Related: #1748

tests/ha/is-triggered-state.test.ts

@@ -0,0 +1,21 @@
+import { describe, expect, it } from 'vitest';
+import { isTriggeredState } from '../../src/ha/is-triggered-state';
+
+describe('isTriggeredState', () => {
+  it('returns true for a state included in STATES_ON', () => {
+    expect(isTriggeredState('on')).toBe(true);
+    expect(isTriggeredState('open')).toBe(true);
+    expect(isTriggeredState('unlocked')).toBe(true);
+  });
+
+  it('returns false for a state not included in STATES_ON', () => {
+    expect(isTriggeredState('off')).toBe(false);
+    expect(isTriggeredState('closed')).toBe(false);
+    expect(isTriggeredState('locked')).toBe(false);
+    expect(isTriggeredState('other')).toBe(false);
+  });
+
+  it('returns false for undefined or empty state', () => {
+    expect(isTriggeredState()).toBe(false);
+  });
+});