# Full Detailed Report: Self-Awareness Layer Implementation Log

This document provides a comprehensive, chronological log of the work performed to design, implement, and verify the Self-Awareness layer for the Portfolio OS project.

## Phase 1: Initial Implementation

**Goal**: The initial request was to implement a foundational Self-Awareness layer to publish events, maintain a system snapshot, and add corresponding tests.

### 1.1. Core Library Creation

The first step was to build the core modules for the awareness system within a new `lib/awareness/` directory.

-   **`events.ts`**: Created to define event enumerations (`AwarenessEvent`) and payload types for each event. This file also established the initial feature flags (`AWARENESS_ENABLED`, `TELEMETRY_ENABLED`).
-   **`snapshot.ts`**: Implemented to manage the in-memory state of the application (open windows, active window, etc.). It included an `updateSnapshot` function to react to events and a `getSnapshot` function to expose the state. A `_resetSnapshot` helper was added for testing.
-   **`bus.ts`**: A simple event bus was created with `publish` and `subscribe` functions. The `publish` function was designed to be the central point, responsible for updating the snapshot, notifying listeners, and logging to the console (guarded by the feature flags).
-   **`index.ts`**: A barrel file was created to simplify imports from the module.

### 1.2. Initial Testing & Bug Fix

-   A test suite, `tests/awareness/awareness.spec.ts`, was created to validate the core logic.
-   **Problem Encountered**: During the first test run, a state leakage issue was discovered. The `_resetSnapshot` function was not correctly clearing the state between tests, causing subsequent tests to fail.
-   **Solution**: The `_resetSnapshot` function in `lib/awareness/snapshot.ts` was modified to directly mutate and clear the properties of the snapshot object, rather than re-assigning the variable. This proved to be a more robust solution for the test environment, and all unit tests passed successfully after this fix.

### 1.3. Application Integration

With the core library stable, it was integrated into the main application components:

-   **`app/page.tsx`**: Logic was added to publish `WINDOW_OPENED`, `WINDOW_CLOSED`, `DESKTOP_LOADED` (on login), and a `TELEMETRY_METRIC` for the initial application load time.
-   **`components/Desktop.tsx`**: Logic was added to publish `DESKTOP_LOADED` (on mount) and `WINDOW_FOCUSED`.
-   **`vitest.config.ts`**: The configuration was updated to include the new `lib/` directory in the test coverage analysis.

## Phase 2: Refinement & Verification

**Goal**: The second major request was to refine the existing implementation with more specific requirements, including stricter testing, coverage thresholds, and reporting.

### 2.1. Configuration & Naming Adjustments

-   **`package.json`**: The `test:run` script was modified to `TEST_AWARENESS=true TEST_TELEMETRY=true vitest run`, ensuring feature flags were active during test execution.
-   **`vitest.config.ts`**: The coverage thresholds were updated to the specified values: `statements: 40%`, `lines: 40%`, `branches: 30%`, `functions: 35%`.
-   **`lib/awareness/`**: The internal testing API was refined. `_resetSnapshot` was renamed to `resetSnapshot`, and a new `resetBus` function was created to provide a single entry point for resetting both listeners and the snapshot state.
-   **Timestamp Precision**: All `Date.now()` calls for event timestamps were replaced with `performance.now()` to provide high-resolution timing for telemetry and event sequencing.

### 2.2. Iterative Testing & Coverage Enhancement

-   **Initial Coverage Failure**: The first run of `pnpm vitest run --coverage` failed, as the coverage for `app/page.tsx` and other components was below the new thresholds.
-   **Smoke Test Creation**: As planned, a new integration smoke test was created at `tests/integration/awareness-smoke.spec.tsx`. This test was designed to simulate a full user flow: application load, user login, opening a window, focusing it, and closing it.
-   **Test Debugging (Round 1 - Timeout)**: The new smoke test initially failed due to a timeout. The application's 3.8-second loader sequence exceeded the default 5-second test timeout. This was resolved by increasing the timeout for this specific test to `10000`ms.
-   **Test Debugging (Round 2 - Element Not Found)**: The test then failed because it could not find the `dialog` role for the window. This was traced to the component's structure. The fix was to add an explicit `role="dialog"` and `aria-label` to the main `motion.div` in `components/Window.tsx`.
-   **Test Debugging (Round 3 - Button Not Found)**: The final test failure was an inability to find the "Close" button. The window control buttons lacked accessible names. This was resolved by adding `aria-label` attributes ("Minimize", "Maximize", "Close") to the control buttons in `components/Window.tsx`.

### 2.3. Final Verification

-   After the accessibility fixes, the command `pnpm vitest run --coverage` was executed again.
-   **Success**: All 12 tests passed, and the code coverage successfully exceeded all specified thresholds.

## Final Outcome

The Self-Awareness layer is now fully implemented, verified, and robustly tested. The process involved not only the creation of the feature but also significant improvements to the testability and accessibility of the existing UI components.

A summary of the final verified state can be found in the verification report:
[./self-awareness-verify.md](./self-awareness-verify.md)
