feat: Add festive visual effects (#2252)

<!-- CURSOR_SUMMARY -->
> [!NOTE]
> Introduces an effects system (fireworks, ghost, hearts, shamrocks,
snow), a new `effect` action, and optional date-based loading effects,
integrated into the card with docs, schema, editor, and tests.
> 
> - **Effects System**:
> - Add `EffectsController` and `advanced-camera-card-effects` host with
lazy-loaded effect modules (`fireworks`, `ghost`, `hearts`, `shamrocks`,
`snow`).
> - New base effect component with fade-in/out; SCSS and z-index
updates.
> - **Actions**:
> - New custom action `advanced_camera_card_action: effect` with
`effect_action` (`start`|`stop`|`toggle`).
>   - Wire into `ActionFactory` and add `EffectAction` executor.
> - **Card Integration**:
> - Mount effects host in `advanced-camera-card` and expose
`getEffectsControllerAPI()` via `CardController`.
> - Loading component can trigger date-based effects (e.g., New Year
fireworks) when enabled.
> - **Configuration & Editor**:
> - Add `performance.features.card_loading_effects` (default `true`)
alongside `card_loading_indicator`.
> - Update schemas, defaults, low-performance profile (disables
effects), and editor toggles.
> - **Docs & Examples**:
>   - Document `effect` action parameters and add menu example.
>   - Update performance docs with new option.
> - **Localization & Tests**:
>   - Update i18n strings for new performance option.
> - Add comprehensive tests for effects controller, action, factory,
config defaults/profiles, and utilities.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
cffd4304fe3bd22340316f9cec53e341379b1756. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

tests/utils/action.test.ts

@@ -5,6 +5,7 @@ import { ActionConfig } from '../../src/config/schema/actions/types.js';
 import {
   createCameraAction,
   createDisplayModeAction,
+  createEffectAction,
   createGeneralAction,
   createInternalCallbackAction,
   createLogAction,
@@ -300,6 +301,22 @@ describe('createSelectOptionAction', () => {
   });
 });
 
+describe('createEffectAction', () => {
+  it('should create effect action', () => {
+    expect(
+      createEffectAction('snow', 'start', {
+        cardID: 'card_id',
+      }),
+    ).toEqual({
+      action: 'fire-dom-event',
+      advanced_camera_card_action: 'effect',
+      effect: 'snow',
+      effect_action: 'start',
+      card_id: 'card_id',
+    });
+  });
+});
+
 describe('getActionConfigGivenAction', () => {
   const action = createViewAction('clips');