Add rig configuration file for IP addresses and hardware-specific settings

[mbreiser]

Problem

Currently, rig-specific details like IP addresses are hardcoded in the controller code. For example, PanelsController.m has hardcoded IP addresses that differ between rigs (192.168.10.62 vs 10.103.40.25).

This makes it difficult to:

• Share code between rigs without modification
• Track which settings belong to which rig
• Onboard new hardware setups

Proposed Solution

Add a rig configuration file (e.g., rig_config.json or rig_config.yaml) that stores:

• Controller IP address
• Port numbers (if needed?)
• SD drive letter
• Arena dimensions (rows, cols)
• Any other rig-specific parameters

The configuration file would be:

• Ignored by git (added to .gitignore)
• Loaded at runtime by PanelsController and other tools
• Documented with a template file (rig_config_template.yaml)

Related

This would complement the new prepare_sd_card workflow by allowing arena dimensions to be validated against the rig configuration.