chore: test and fixes

TODO.md

internal/rootmux/rootmux_test.go

mailtemplate.html

pkg/apientreprise/apientreprise.go

pkg/apientreprise/apientreprise_test.go

pkg/apientreprise/configs/apicache.json

pkg/common/common.go

pkg/franceconnect/franceconnect.go

pkg/franceconnect/mock.go

pkg/matcher/matcher.go

pkg/matcher/matcher_test.go

pkg/oidcserver/oidcserver.go

pkg/oidcserver/oidcserver_test.go

pkg/tester/tester.go

pkg/tokens/tokens.go

pkg/tokens/tokens_test.go

web/components/matcher/matcher.js