Add document archiving

Documents can be archived and unarchived. Archived documents are
read-only, excluded from the trust center, and moved to a dedicated
Archived tab in the document list.

- Add archived_at timestamp and status (ACTIVE/ARCHIVED) PG enum column
- Rename DocumentStatus → DocumentVersionStatus, introduce DocumentStatus
- Archive/unarchive mutations in GraphQL, MCP, and CLI
- Bulk archive/unarchive mutations with Active/Archived tabs in the list
- ABAC policies: write actions denied on archived docs, unarchive denied
  on active docs
- Remove control/risk mappings and reset trust center visibility on archive
- Exclude archived documents from mapping dialogs and trust center tab

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

pkg/coredata/document_version_status.go

@@ -0,0 +1,74 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package coredata
+
+import (
+	"database/sql/driver"
+	"fmt"
+)
+
+type (
+	DocumentVersionStatus uint8
+)
+
+const (
+	DocumentVersionStatusDraft DocumentVersionStatus = iota
+	DocumentVersionStatusPublished
+)
+
+func (ps DocumentVersionStatus) MarshalText() ([]byte, error) {
+	return []byte(ps.String()), nil
+}
+
+func (ps *DocumentVersionStatus) UnmarshalText(data []byte) error {
+	val := string(data)
+
+	switch val {
+	case DocumentVersionStatusDraft.String():
+		*ps = DocumentVersionStatusDraft
+	case DocumentVersionStatusPublished.String():
+		*ps = DocumentVersionStatusPublished
+	default:
+		return fmt.Errorf("invalid DocumentVersionStatus value: %q", val)
+	}
+
+	return nil
+}
+
+func (ps DocumentVersionStatus) String() string {
+	var val string
+
+	switch ps {
+	case DocumentVersionStatusDraft:
+		val = "DRAFT"
+	case DocumentVersionStatusPublished:
+		val = "PUBLISHED"
+	}
+
+	return val
+}
+
+func (ps *DocumentVersionStatus) Scan(value any) error {
+	val, ok := value.(string)
+	if !ok {
+		return fmt.Errorf("invalid scan source for DocumentVersionStatus, expected string got %T", value)
+	}
+
+	return ps.UnmarshalText([]byte(val))
+}
+
+func (ps DocumentVersionStatus) Value() (driver.Value, error) {
+	return ps.String(), nil
+}