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GEMINI.md

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+## Project Overview
+
+This is a Meal Planner application built with FastAPI. It allows users to manage a food database, create meals from foods, and generate 2-week meal plans. The application uses SQLAlchemy for database interactions and Jinja2 for templating the user interface.
+
+**Key Features:**
+*   **Foods** - Manage a database of food items with nutritional information.
+*   **Meals** - Create custom meals by combining various food items.
+*   **Plans** - Generate and manage 2-week meal plans, including daily nutritional totals.
+*   **Detailed Planner** - View a detailed breakdown of meals for a specific day.
+
+## Building and Running
+
+This project uses `uvicorn` to serve the FastAPI application.
+
+1.  **Install Dependencies:**
+    Ensure you have Python 3.7+ installed. Install the required Python packages using pip:
+    ```bash
+    pip install -r requirements.txt
+    ```
+
+2.  **Run the Application:**
+    Start the FastAPI server using uvicorn. The `--reload` flag enables auto-reloading on code changes, which is useful for development.
+    ```bash
+    uvicorn main:app --reload
+    ```
+    The application will typically be accessible at `http://127.0.0.1:8000` (or the port specified in `main.py` if different, e.g., `8999`).
+
+## Development Conventions
+
+*   **Framework:** FastAPI is used for the backend API and serving HTML templates.
+*   **Database:** SQLAlchemy is used as the ORM for interacting with the SQLite database (`meal_planner.db`).
+*   **Templating:** Jinja2 is used for rendering HTML pages. Templates are located in the `templates/` directory.
+*   **Dependency Injection:** Database sessions are managed using FastAPI's dependency injection system (`Depends(get_db)`).
+*   **Pydantic Models:** Pydantic models are used for data validation and serialization of API requests and responses.
+*   **Static Files:** Static files (CSS, JS, images) are served from the `static/` directory (though not explicitly shown in the provided file list, it's a common FastAPI convention).