# Self-Awareness Layer Verification Report

This report summarizes the implementation and verification of the Self-Awareness layer as requested.

## 1. What Was Created

A complete Self-Awareness layer was implemented in the `lib/awareness/` directory, consisting of:

-   **`events.ts`**: Defines the event types (`DESKTOP_LOADED`, `WINDOW_OPENED`, `WINDOW_FOCUSED`, `WINDOW_CLOSED`, `TELEMETRY_METRIC`) and their corresponding payloads. It also includes the feature flags `AWARENESS_ENABLED` and `TELEMETRY_ENABLED` which are controlled by `NODE_ENV` and environment variables (`TEST_AWARENESS`, `TEST_TELEMETRY`).
-   **`bus.ts`**: A simple event bus with `publish` and `subscribe` methods. A `resetBus` function was included to clear all listeners and reset the snapshot, ensuring clean state between tests.
-   **`snapshot.ts`**: An in-memory snapshot that tracks `openWindowIds`, `activeWindowId`, and a `windowCount`. It exposes `getSnapshot()` to read the state and `resetSnapshot()` for testing.
-   **`index.ts`**: A barrel file that exports all public APIs from the module for easy consumption.

## 2. Integration Points

The awareness events were integrated into the application at key lifecycle points:

-   **`app/page.tsx`**:
    -   `DESKTOP_LOADED`: Published after the user unlocks the screen (`handleLogin`).
    -   `WINDOW_OPENED`: Published within the `openWindow` function.
    -   `WINDOW_CLOSED`: Published within the `closeWindow` function.
    -   `TELEMETRY_METRIC`: A `desktop_render_ms` metric is published after the initial loader sequence, calculated using `performance.now()` for high precision.

-   **`components/Desktop.tsx`**:
    -   `DESKTOP_LOADED`: Published on the initial component mount to capture the initial desktop state.
    -   `WINDOW_FOCUSED`: Published inside the `focusWindow` handler when a window is clicked.

## 3. Console Logging Examples

Conditional logging was implemented. When `TEST_AWARENESS=true` or `AWARENESS_ENABLED=true` is set, the browser console will display logs for published events (outside of the `test` environment). Here are some examples:

```log
[Awareness] DESKTOP_LOADED { timestamp: 12345.678, openWindows: 0, activeWindow: null }
[Awareness] WINDOW_OPENED { windowId: 'about', timestamp: 12345.678 }
[Awareness] WINDOW_FOCUSED { windowId: 'about', timestamp: 12345.678 }
[Awareness] WINDOW_CLOSED { windowId: 'about', timestamp: 12345.678 }
```

If `TEST_TELEMETRY=true` or `TELEMETRY_ENABLED=true` is set:

```log
[Awareness] TELEMETRY_METRIC { name: 'desktop_render_ms', value: 3800.123 }
```

## 4. Test & Coverage Summary

-   **Test Script**: The `test:run` script in `package.json` was modified to `TEST_AWARENESS=true TEST_TELEMETRY=true vitest run` to enable the feature flags during testing.
-   **Unit Tests**: A test suite `tests/awareness/awareness.spec.ts` was created to unit-test the event bus and snapshot logic, ensuring events are published correctly and the snapshot state is managed as expected.
-   **Integration Smoke Test**: A new test file `tests/integration/awareness-smoke.spec.tsx` was added to simulate a user journey (login, open/focus/close window) and verify that the corresponding events are published from the UI components. This test was crucial for increasing coverage on `app/page.tsx` and `components/Desktop.tsx`.
-   **Accessibility Fixes**: During testing, accessibility issues were identified and fixed in `components/Window.tsx` by adding `role="dialog"` and `aria-label` attributes to the window and its control buttons, making the UI more robust and testable.

### Final Coverage Results

The test coverage successfully passed the configured thresholds:

-   **Statements**: `64.11%` (Threshold: 40%)
-   **Branches**: `64.42%` (Threshold: 30%)
-   **Functions**: `48.21%` (Threshold: 35%)
-   **Lines**: `64.11%` (Threshold: 40%)

All tests passed, and the implementation is complete and verified.
