Create tests for interface and preload files

[acrosman]

Adds testing to currently untested code files.

[Copilot]

Pull request overview

Adds Jest coverage for previously untested renderer/preload code and extends existing game/plugin test suites to hit additional lifecycle and helper paths.

Changes:

• Adds new Jest test suites for app/interface.js (renderer) and app/preload.js (preload/IPC bridge).
• Improves renderer robustness by handling games:list IPC failures in app/interface.js.
• Expands several existing game/plugin tests and registry tests to cover additional branches and event wiring.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
app/preload.test.js	New tests for the preload context-bridge API (send/receive/invoke allowlists).
app/interface.test.js	New jsdom tests covering renderer init, game selection flow, stylesheet injection, and return-to-menu behavior.
app/interface.js	Adds try/catch around games:list to render a user-facing error on failure.
app/games/registry.test.js	Adds tests for default importFn behavior and multi-game selection.
app/games/orbit-sprite-memory/tests/index.test.js	Adds coverage for audio close rejection handling, flash timeouts, selection flow, and best-stats loading.
app/games/high-speed-memory/tests/index.test.js	Adds coverage for audio close rejection handling and click listener wiring.
app/games/field-of-view/tests/index.test.js	Adds coverage for click wiring, early-return paths, timers/RAF branches, and next-trial behavior.
app/games/fast-piggie/tests/index.test.js	Adds coverage for end-panel flow, return-to-menu dispatch, timer callbacks, and image-load failure paths.
app/games/fast-piggie/tests/game.test.js	Adds tests for the new/updated getBestStats() contract and behavior.
app/components/gameCard.js	Adds a field-of-view stats display branch on the game card UI.
mocks/electron.js	Extends Electron Jest mock to include contextBridge and ipcRenderer.

[Copilot]

global.require won't provide a lexical require binding for ES modules, and even if preload.js were treated as CommonJS, its local require would not be affected by global.require. This makes the await import('./preload.js') setup brittle and likely to fail or load the real electron module. Prefer mocking electron via Jest's ESM mocking (jest.unstable_mockModule('electron', ...) before importing preload.js) or by refactoring preload.js to use ESM imports so it can be imported and mocked consistently in tests.

[Copilot]

This field-of-view progress rendering block is duplicated (an identical if (manifest.id === 'field-of-view' && progress) block appears immediately above). Keeping both adds dead code and increases the chance of future divergence. Remove the duplicate and keep a single code path for the field-of-view stats rendering.

Suggested change

	if (manifest.id === 'field-of-view' && progress) {
	scoreElem = document.createElement('p');
	scoreElem.className = 'game-high-score';
	if (typeof progress.bestThresholdMs === 'number') {
	scoreElem.textContent = `All-time Best Threshold: ${progress.bestThresholdMs}ms`;
	} else {
	scoreElem.textContent = 'All-time Best Threshold: No data yet';
	}
	scoreElem.setAttribute('aria-label', `Stats for ${manifest.name}: ${scoreElem.textContent}`);
	}

[acrosman]

@copilot open a new pull request to apply changes based on the comments in this thread

[Copilot]

@acrosman I've opened a new pull request, #26, to work on those changes. Once the pull request is ready, I'll request review from you.