Script	What it is for
`basemap-doctor.py`	Why a user's map has no basemap — certificates, DNS, proxy, or colour depth
`picocalc/`	Calculinux device setup: console font, palette, Wi-Fi; `xiao-radio/` is the XIAO radio kit (firmware build, flashing, UART setup)
`uconsole/`	The uConsole's always-on SPI bridge service (MeshTerm can also drive that radio directly, with no script at all — see `docs/uconsole.md`)
`cardputer/`	The Cardputer Zero's console host: `fetch-terminus.py` installs the 12-pixel Terminus fonts it draws in (OFL, so never shipped with MeshTerm)

basemap-doctor.py

The map is the only networked part of MeshTerm, and every fetch failure on that path is logged at DEBUG while log_level defaults to WARNING — so a reader whose tiles never arrive sees a blank ground and no explanation. This prints the explanation and the fix.

Send a user this, to run on the machine with the problem:

curl -fsSL https://raw.githubusercontent.com/jpmartineau/MeshTerm/main/scripts/basemap-doctor.py -o /tmp/basemap-doctor.py
python3 /tmp/basemap-doctor.py

Any python3 will do: if that one has no MeshTerm, the script reads the interpreter out of the installed meshterm command's shebang and hands itself over, so the answer always comes from the app's own Python — a Mac routinely has three and only that one has the trust store that matters. Save it to a file as above rather than piping into python3 -: with no file on disk there is nothing to hand over.

Have them paste the whole output back. It names the interpreter, the certificate store, the tile source, the cached-tile count, COLORTERM, and then one verdict:

curl reached it, Python did not — the Python's certificate store is empty. A python.org install on macOS ships that way until Install Certificates.command is run.
neither reached it — the network path: a firewall, a proxy, a DNS filter, or an outage. Nothing to fix in MeshTerm.
both reached it — tiles are fine and the complaint is colour: an unset COLORTERM means 256 colours, where the basemap's greens and blues collide. Terminal.app cannot do 24-bit colour at all.

Exit status is 0 when tiles arrive and 1 when they do not, so it can be scripted.