2D Sensor Map Generator

I'm looking for a developer to create a minimalistic 2D map generator for positioning sensors. The interface should be built with HTML, JavaScript, and CSS, and the positions of elements will be stored in a MySQL database.

Key Requirements:
- Only straight walls, positioned via drag and drop
- Wall lengths specified in meters
- Light gray grid background
- Sensors moved by drag and drop, with x, y, z coordinates managed through the interface
- Validation button to record sensor positions with timestamps
- Maintain a log of position changes (no updates)
The positions of the various elements (walls and sensors) are stored in a MySQL database.
The sensors are stored by their ID and their x, y, and z positions.
The map must be oriented North, South, East, and West.
It is composed solely of straight walls (positionned by drag/drop).
The sensor IDs have already been defined in the database.
The sensors are moved by drag and drop, indicating their x and y positions. The z coordinates are entered in a separate field.
The x and y coordinates can also be adjusted in the field where they are applied. Once the sensor is correctly located, there is a button to validate its position.
This also records the date its position was validated.
A line is added (no update) each time the sensor's position is changed (by drag/drop).