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/markdown_handler.go

@@ -0,0 +1,94 @@
+// 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"
+
+	trust "go.probo.inc/probo/pkg/complianceportal/visitor"
+	"go.probo.inc/probo/pkg/coredata"
+)
+
+type Handler struct {
+	trustService *trust.Service
+}
+
+func NewHandler(trustService *trust.Service) *Handler {
+	return &Handler{trustService: trustService}
+}
+
+func (h *Handler) HandleLLMsTxt(w http.ResponseWriter, r *http.Request) {
+	tc := CompliancePageFromContext(r.Context())
+	if tc == nil {
+		http.Error(w, "not found", http.StatusNotFound)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+
+	scope := coredata.NewScopeFromObjectID(tc.ID)
+
+	if err := h.trustService.RenderCompliancePageMarkdown(r.Context(), w, tc.ID, scope); err != nil {
+		http.Error(w, "internal server error", http.StatusInternalServerError)
+	}
+}
+
+func (h *Handler) HandleRobotsTxt(w http.ResponseWriter, r *http.Request) {
+	tc := CompliancePageFromContext(r.Context())
+	if tc == nil {
+		http.Error(w, "not found", http.StatusNotFound)
+		return
+	}
+
+	baseURL := CompliancePageBaseURLFromContext(r.Context())
+	if baseURL == nil {
+		http.Error(w, "not found", http.StatusNotFound)
+		return
+	}
+
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+
+	if err := h.trustService.RenderRobotsTxt(r.Context(), w, tc.SearchEngineIndexing, *baseURL); err != nil {
+		http.Error(w, "internal server error", http.StatusInternalServerError)
+	}
+}
+
+func (h *Handler) HandleSitemap(w http.ResponseWriter, r *http.Request) {
+	tc := CompliancePageFromContext(r.Context())
+	if tc == nil {
+		http.Error(w, "not found", http.StatusNotFound)
+		return
+	}
+
+	baseURL := CompliancePageBaseURLFromContext(r.Context())
+	if baseURL == nil {
+		http.Error(w, "not found", http.StatusNotFound)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/xml; charset=utf-8")
+
+	scope := coredata.NewScopeFromObjectID(tc.ID)
+
+	if err := h.trustService.RenderSitemap(r.Context(), w, tc.ID, scope, *baseURL); err != nil {
+		http.Error(w, "internal server error", http.StatusInternalServerError)
+	}
+}