test: confirm tokens are stored after configuration setup is complete

[zimeg]

edit: also reveals a hidden message from the "devices" endpoint- if one is returned [a squashed bug]. that message might show an "outdated token" message, but that's not such a common case afaik

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 29.34132% with 236 lines in your changes missing coverage. Please review.

Project coverage is 36.68%. Comparing base (eae5463) to head (8a0ebbf).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/api/usage.go	0.00%	41 Missing ⚠️
pkg/cognito/cognito.go	0.00%	40 Missing ⚠️
pkg/config/devices.go	42.50%	21 Missing and 2 partials ⚠️
cmd/root.go	0.00%	22 Missing ⚠️
cmd/etime/etime.go	0.00%	21 Missing ⚠️
pkg/api/api.go	0.00%	21 Missing ⚠️
pkg/config/config.go	57.44%	9 Missing and 11 partials ⚠️
pkg/config/credentials.go	71.69%	9 Missing and 6 partials ⚠️
pkg/api/devices.go	0.00%	9 Missing ⚠️
pkg/api/status.go	0.00%	7 Missing ⚠️
... and 5 more

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #129       +/-   ##
===========================================
+ Coverage   22.20%   36.68%   +14.48%     
===========================================
  Files          16       26       +10     
  Lines         563      597       +34     
===========================================
+ Hits          125      219       +94     
+ Misses        431      350       -81     
- Partials        7       28       +21     

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[github-actions]

Latest builds: https://github.com/zimeg/emporia-time/actions/runs/10714733166