chore: rename Go module path gitea.d-ma.be → git.d-ma.be

Infra ADR-0004 renamed the Gitea host. Bulk replace across go.mod and
all .go import paths. Build and tests pass unchanged.

Closes #20

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Dt6aHEDWRjkK14Voi6HnGh

internal/web/oidc/oidc.go

@@ -27,8 +27,8 @@ import (
 	"github.com/coreos/go-oidc/v3/oidc"
 	"golang.org/x/oauth2"
 
-	"gitea.d-ma.be/mathias/tapir/internal/metrics"
-	"gitea.d-ma.be/mathias/tapir/internal/web"
+	"git.d-ma.be/mathias/tapir/internal/metrics"
+	"git.d-ma.be/mathias/tapir/internal/web"
 )
 
 // Config is the OIDC + session configuration. cmd/tapir maps these from

internal/web/oidc/oidc_test.go

@@ -14,8 +14,8 @@ import (
 	josev4 "github.com/go-jose/go-jose/v4"
 	"github.com/stretchr/testify/require"
 
-	"gitea.d-ma.be/mathias/tapir/internal/web"
-	"gitea.d-ma.be/mathias/tapir/internal/web/oidc"
+	"git.d-ma.be/mathias/tapir/internal/web"
+	"git.d-ma.be/mathias/tapir/internal/web/oidc"
 )
 
 const (

internal/web/oidc/session.go

@@ -12,7 +12,7 @@ import (
 	"sync"
 	"time"
 
-	"gitea.d-ma.be/mathias/tapir/internal/web"
+	"git.d-ma.be/mathias/tapir/internal/web"
 )
 
 // randToken returns a URL-safe 256-bit random string for session IDs, OIDC