GPS Compass

TODO:

• [ ] Add page-specific notes for hardware/gps-compass.md after inspecting the real project files.
• [ ] Cross-link GPS Compass to the most relevant code, data, testing, and safety pages.
• [ ] List the exact component names and model numbers where known.
• [ ] Document wiring, voltage, connector, and mounting details.
• [ ] Add what software file reads from or commands this hardware.
• [ ] Add the calibration or setup steps needed before a run.
• [ ] Add bench-test steps and expected output.
• [ ] Add common physical failure modes and symptoms.
• [ ] Add safety limits for power, motion, heat, or outdoor testing.
• [ ] Document GPS message type, fix quality, satellites, and coordinate units.
• [ ] Add how poor GPS affects route selection and dashboard status.
• [ ] Add the exact source path, artifact path, or hardware component name.
• [ ] Add the command or procedure needed to reproduce the result.
• [ ] Add expected inputs and outputs.
• [ ] Add the settings, flags, constants, or calibration values that control it.