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<details open="true"><summary>Generated summary (powered by <a href="https://app.graphite.dev">Graphite</a>)</summary>

> ## TL;DR
> This pull request introduces Cross-Origin Resource Sharing (CORS) middleware to the FastAPI application and adds a new ping endpoint. It also includes a new script for building an executable.
> 
> ## What changed
> - Added CORS middleware to the FastAPI application in `pyrb/controllers/api/main.py`. This allows the server to accept requests from any origin, with any method and headers.
> - Added a new `/ping` endpoint to the FastAPI application in `pyrb/controllers/api/main.py`. This endpoint simply returns the string "pong".
> - Added a new script `scripts/build-executable.sh` for building an executable. This script uses PyInstaller to compile the FastAPI application into a standalone executable.
> 
> ## How to test
> - To test the CORS middleware, try making a request to the server from a different origin. The server should accept the request and respond appropriately.
> - To test the new `/ping` endpoint, make a GET request to `/ping`. The server should respond with the string "pong".
> - To test the new build script, run `./scripts/build-executable.sh`. This should create a new executable in the current directory.
> 
> ## Why make this change
> - The CORS middleware is necessary for the server to accept requests from different origins. This is especially important for web applications, which often need to make requests to servers on different domains.
> - The `/ping` endpoint is a simple health check that can be used to verify that the server is running and responding to requests.
> - The build script makes it easy to compile the FastAPI application into a standalone executable, which can be useful for deployment or distribution.
</details>

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<details open="true"><summary>Generated summary (powered by <a href="https://app.graphite.dev">Graphite</a>)</summary>

> ## TL;DR
> This pull request adds error handling for when the account is not set in the context, and introduces a new endpoint to retrieve portfolio information.
> 
> ## What changed
> - Added `HTTPException` import in `deps.py` for error handling.
> - Modified `context_dep` function in `deps.py` to handle `InitializationError` and raise a `404` HTTPException.
> - Added a new `PortfolioResponse` model in `main.py` to represent portfolio information.
> - Added a new `/portfolio` endpoint in `main.py` to retrieve portfolio information.
> - Added tests for the new `/portfolio` endpoint in `test_api.py`.
> 
> ## How to test
> 1. Run the tests in `test_api.py`.
> 2. Use a client to make a `GET` request to the `/portfolio` endpoint and verify the response.
> 
> ## Why make this change
> - This change improves the error handling when the account is not set in the context by raising a `404` HTTPException.
> - The addition of the `/portfolio` endpoint allows users to retrieve detailed portfolio information, enhancing the functionality of the API.
</details>

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<details open="true"><summary>Generated summary (powered by <a href="https://app.graphite.dev">Graphite</a>)</summary>

> ## TL;DR
> This pull request updates the version of the Python Rebalancer (pyrb) from 0.9.3 to 0.9.4 in the `pyproject.toml` file.
> 
> ## What changed
> The only change in this pull request is the version number of the pyrb package. The version has been incremented from 0.9.3 to 0.9.4.
> 
> ```diff
>  [tool.poetry]
>  name = "pyrb"
> -version = "0.9.3"
> +version = "0.9.4"
>  description = "Python Rebalancer"
>  authors = ["Minki Kim <mingi3314@gmail.com>"]
>  readme = "README.md"
> ```
> 
> ## How to test
> To test this change, you can pull the changes from this branch and check the `pyproject.toml` file. The version of the pyrb package should be 0.9.4.
> 
> ## Why make this change
> This change is necessary to keep the versioning of the pyrb package up to date. This new version may include bug fixes, new features, or other improvements.
</details>