Add a placeholder association for localhost in developer mode.

[pixlwave]

Just a nice quality-of-life tweak so we don't need to check the docs for the correct syntax for alternate modes.

Note: I didn't try this with localhost specifically (it just seemed the most obvious placeholder).

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.84%. Comparing base (1132ac8) to head (6c91f77).
Report is 1 commits behind head on develop.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4163      +/-   ##
===========================================
+ Coverage    78.81%   78.84%   +0.03%     
===========================================
  Files          828      828              
  Lines        75216    75216              
===========================================
+ Hits         59278    59302      +24     
+ Misses       15938    15914      -24     

Flag	Coverage Δ
unittests	71.38% <ø> (-0.01%)	⬇️

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[stefanceriu]

👌