refactor(backend): clean up package re-exports, settings model properties, and unused signals

README.md

@@ -14,11 +14,13 @@ The `ISenseCloud` application provides a real-time monitor and analysis dashboar
 - **Custom Safety Limits & Thresholds**: Configurable alarm thresholds and set-points with automatic alerts when temperatures diverge from normal boundaries.
 
 ### App Showcase
+
 ![ISenseCloud UI displaying successful connection on COM6](image-1.png)
 *Figure 1: Main Status Dashboard displaying successful connection, active serial communications, and automated logging terminal.*
 
 > [!NOTE]
 > **Take Screenshots for Visual Placeholders:**
+>
 > - **Wafer Heatmap Tab**: Take a screenshot of the Wafer Map tab showing the radial heatmap interpolation, save it to `docs/design/wafer_heatmap_tab.png` and add it here.
 > - **Temperature Trend Graph**: Take a screenshot of the Graph tab plotting multi-sensor trend lines, save it to `docs/design/temp_trend_tab.png` and add it here.
 
@@ -42,12 +44,15 @@ During the refactoring from the flat-layout prototype (`SettingTab` branch) to t
 From the project root:
 
 ### Option A: Using `uv` (Recommended)
+
 If you have [uv](https://docs.astral.sh/uv/) installed:
+
 ```bash
 uv sync
 ```
 
 ### Option B: Using `pip`
+
 ```bash
 python3 -m venv .venv
 source .venv/bin/activate   # or .venv\Scripts\activate on Windows
@@ -59,19 +64,21 @@ pip install -e .            # install the `pygui` package (src/ layout) in edita
 ## Run
 
 ### Launch PySide6 QML App
+
 ```bash
 make run
 ```
+
 This launches the Qt window and loads the `ISC` QML module from `src/pygui/ISC/Main.qml`.
 
 ## Development
 
-The project uses `uv` for dependency management and tooling, `Ruff` for linting and formatting, `Mypy` for static type checking, and `pytest` for unit tests. 
+The project uses `uv` for dependency management and tooling, `Ruff` for linting and formatting, `Mypy` for static type checking, and `pytest` for unit tests.
 
 A `Makefile` is provided to simplify common development and verification tasks:
 
 | Command | Description |
-|---------|-------------|
+| --------- | ------------- |
 | `make install` | Sync dependencies and set up the local `.venv` using `uv` |
 | `make run` | Launch the ISenseCloud application |
 | `make test` | Run the `pytest` test suite |
@@ -83,6 +90,7 @@ A `Makefile` is provided to simplify common development and verification tasks:
 ### Ruff Configuration
 
 Ruff is configured in `pyproject.toml` to enforce:
+
 - **E/W**: Pycodestyle errors and warnings
 - **F**: Pyflakes linter rules
 - **I**: Import sorting (isort parity)
@@ -174,11 +182,13 @@ Window {
 - If the app does not start, verify the virtual environment is active and dependencies are installed:
 
   *Using `uv`:*
+
   ```bash
   uv sync
   ```
 
   *Using `pip`:*
+
   ```bash
   source .venv/bin/activate   # or .venv\Scripts\activate on Windows
   pip install -r requirements.txt
@@ -186,18 +196,21 @@ Window {
 
 - If no window appears, ensure you are running in a desktop session with GUI access.
 
-- **Windows COM Port Connection Issues:** 
-  * Standard Windows serial drivers don't support custom baud rates (e.g. `888888`), throwing an expected `OSError(22)` warning before falling back to `115200` baud.
+- **Windows COM Port Connection Issues:**
+  - Standard Windows serial drivers don't support custom baud rates (e.g. `888888`), throwing an expected `OSError(22)` warning before falling back to `115200` baud.
 
 ### Step-by-Step Windows Simulator Connection Guide
 
 #### Step 1: Create the Virtual Serial Port Bridge
+
 Open **HHD Virtual Serial Port Tools**. Under the **Local Bridges** panel on the left, click the green **`+`** (Add) button to create a new port pair. Configure it to bridge **`COM5 ↔ COM6`**.
 
 ![HHD Virtual Serial Port Tools showing COM5 ↔ COM6 Local Bridge](image.png)
 
 #### Step 2: Configure and Start the Wafer Simulator
+
 Launch the **Wafer Simulator Control Panel** (`wafer_sim_gui.py`):
+
 1. Set the **Serial Port** to **`COM5`**.
 2. **Uncheck** the `Auto-create Virtual Port (com0com)` checkbox.
 3. Choose your desired **Wafer Type** (e.g., `aepwafer`) and **Family Code** (e.g., `A`).
@@ -206,6 +219,7 @@ Launch the **Wafer Simulator Control Panel** (`wafer_sim_gui.py`):
 ![Wafer Simulator Control Panel configured on COM5 and streaming](image-2.png)
 
 #### Step 3: Run the UI and Connect
+
 Launch the `pygui` client application. On the left navigation rail, click **DETECT WAFER**. The application will scan all active COM ports, automatically detect the virtual wafer simulator on **`COM6`**, and update the status indicator to **Connected** (green).
 
 ![ISenseCloud UI displaying successful connection on COM6](image-1.png)