fix(routes): attach the public invoice middleware through the registrar

[roncodes]

Fixes API Contract (Postman) on #32.

#34 wrapped the public invoice routes as ->group(['middleware' => [...]], function ...). RouteRegistrar::group() only takes the callback, so the attributes array reaches Router::group() as the routes argument and is handed to RouteFileRegistrar, which tries to require it:

Array to string conversion in vendor/laravel/framework/src/Illuminate/Routing/RouteFileRegistrar.php:35

Every artisan command and request then fails while the routes load, which is why the contract job died right after optimize:clear. The unit tests never caught it because the test bootstrap's fake registrar accepted an attributes array on group(), which the real one does not.

This attaches the middleware with ->middleware([...]) on the registrar chain, the same way Laravel's registrar does. Routes and middleware are unchanged. The fake registrar in scripts/pest-bootstrap.php now has a middleware() of its own (pending middleware applied to the next group()), so the routes test loads the file and keeps asserting which routes are logged.

Also: run CI on pull requests against release and dev branches. ember.yml, server.yml and postman.yml listed main alone under pull_request.branches, so a fix like this one was only verified once the release PR re-ran. They now match core-api and also run for dev-v* and release/v* targets; this PR's own checks are the proof.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (f7de767) to head (c25fefa).

Additional details and impacted files

@@                 Coverage Diff                 @@
##             release/v0.0.13       #35   +/-   ##
===================================================
  Coverage             100.00%   100.00%           
  Complexity              1253      1253           
===================================================
  Files                     74        74           
  Lines                   6991      6990    -1     
===================================================
- Hits                    6991      6990    -1     

Flag	Coverage Δ
backend	100.00% <100.00%> (ø)

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