Developing without debug cable

Documentation says: "while in theory you can develop wirelessly via DFU updates, it's no fun at all and you're liable to brick your device". Could we get more details? In particular, is it enough to be careful with a watchdog to avoid bricking the device?

Start by reviewing the quoted documentation and the project's DFU and watchdog guidance. Clarify whether careful watchdog use prevents bricking during wireless development, and update the documentation with the relevant details and warnings.

Written by the indexing model from the issue text.