Extract complianceportal package from trust and probo

Split the compliance portal into an admin-facing management side and a
public-facing visitor side under pkg/complianceportal. Trust-center CRUD,
domains, custom links, frameworks, files and accesses move out of
pkg/probo, and the visitor read logic moves out of pkg/trust. IAM actions
migrate onto compliance-portal scopes.

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

pkg/complianceportal/visitor/errors.go

@@ -0,0 +1,37 @@
+// 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 visitor
+
+import "errors"
+
+var (
+	ErrPageNotFound              = errors.New("page not found")
+	ErrMembershipNotFound        = errors.New("membership not found")
+	ErrUserNotFound              = errors.New("user not found")
+	ErrUserInactive              = errors.New("user inactive")
+	ErrDocumentAccessNotFound    = errors.New("document access not found")
+	ErrNDAFileNotFound           = errors.New("NDA file not found")
+	ErrDocumentNotFound          = errors.New("document not found")
+	ErrDocumentNotVisible        = errors.New("document not visible")
+	ErrReportNotFound            = errors.New("report not found")
+	ErrTrustCenterFileNotFound   = errors.New("trust center file not found")
+	ErrTrustCenterFileNotVisible = errors.New("trust center file not visible")
+)