Serve compliance pages via domain routing

Rename the compliancepage HTTP package to complianceportal and drop the
slug-based id middleware. Compliance pages are now served exclusively
over SNI-based custom-domain HTTPS, with the SNI middleware resolving the
page by TLS server name and redirecting secondary domains to the
canonical host.

Signed-off-by: Bryan Frimin <bryan@probo.com>

pkg/server/api/complianceportal/member_provisioning_middleware.go

@@ -0,0 +1,68 @@
+// Copyright (c) 2026 Probo Inc <hello@probo.com>.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+package complianceportal
+
+import (
+	"net/http"
+
+	"github.com/99designs/gqlgen/graphql"
+	"github.com/vektah/gqlparser/v2/gqlerror"
+	"go.gearno.de/kit/httpserver"
+	"go.gearno.de/kit/log"
+	trust "go.probo.inc/probo/pkg/complianceportal/visitor"
+	"go.probo.inc/probo/pkg/server/api/authn"
+	"go.probo.inc/probo/pkg/server/gqlutils"
+)
+
+func NewMemberProvisioningMiddleware(trustSvc *trust.Service, logger *log.Logger) func(next http.Handler) http.Handler {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(
+			func(w http.ResponseWriter, r *http.Request) {
+				ctx := r.Context()
+
+				identity := authn.IdentityFromContext(ctx)
+				if identity == nil {
+					next.ServeHTTP(w, r)
+					return
+				}
+
+				compliancePage := CompliancePageFromContext(r.Context())
+
+				if _, err := trustSvc.ProvisionPortalMember(ctx, compliancePage.ID, identity.ID); err != nil {
+					logger.ErrorCtx(ctx, "cannot provision member", log.Error(err))
+					httpserver.RenderJSON(
+						w,
+						http.StatusInternalServerError,
+						&graphql.Response{
+							Errors: gqlerror.List{
+								gqlutils.Internal(ctx),
+							},
+						},
+					)
+
+					return
+				}
+
+				next.ServeHTTP(w, r)
+			},
+		)
+	}
+}