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/card-controller/actions/factory.test.ts

@@ -41,6 +41,7 @@ import { ViewAction } from '../../../src/card-controller/actions/actions/view';
 import { ActionFactory } from '../../../src/card-controller/actions/factory';
 import { INTERNAL_CALLBACK_ACTION } from '../../../src/config/schema/actions/custom/internal';
 import { ActionConfig } from '../../../src/config/schema/actions/types';
+import { EffectAction } from '../../../src/card-controller/actions/actions/effect';
 
 // @vitest-environment jsdom
 describe('ActionFactory', () => {
@@ -188,6 +189,7 @@ describe('ActionFactory', () => {
         InternalCallbackAction,
       ],
       [{ advanced_camera_card_action: 'reload' as const }, ReloadAction],
+      [{ advanced_camera_card_action: 'effect' as const }, EffectAction],
     ])(
       'advanced_camera_card_action: $advanced_camera_card_action',
       (action: Partial<ActionConfig>, classObject: object) => {