🧪 Add tests for Copilot Initialization

[google-labs-jules]

🎯 What:

Added unit tests for the chatApp.init() functionality inside frontend/public/js/chat.js. Prior to this change, the initialization code (which binds DOM event listeners, configures the visual inspector, and sets up keyboard shortcuts) was completely untested.

📊 Coverage:

The new tests specifically verify:

• That init() correctly triggers its sub-routines: setupEventListeners, setupInspector, and setupKeyboardShortcuts.
• That event listeners are properly bound to the chat controls (#chat-input, #btn-send-chat, #btn-snap-error), successfully invoking sendMessage on click/keypress.
• That keyboard shortcuts (Ctrl+Z, Ctrl+Y, Delete) correctly invoke undo, redo, and delete functionalities.
• That clicking an element in the #live-preview invokes the inspector overlay and correctly styles the selected element.

✨ Result:

Significant improvement in frontend test coverage and reliability. Refactoring the initialization code or adding new shortcuts/event handlers will now be significantly safer as regressions will be caught by the automated test suite.

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PR created automatically by Jules for task 18253511397192919364 started by @instituto-ops

[google-labs-jules]

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