Assets as document: replace snapshot with publish workflow

Remove assets from the snapshot system and replace with a publish-based
document workflow that generates versioned ProseMirror documents.

- Remove snapshot_id/source_id from asset and asset_vendor models
- Delete AssetFilter (no longer needed without snapshot filtering)
- Add PublishAssetList service, GraphQL mutation, MCP tool, CLI command,
  and n8n operation
- Add asset_list_document_id column to generated_documents table
- Generate ProseMirror documents with asset inventory tables
  (name, type, amount, data types stored, owner, vendors)
- Add AssetListDocument resolver on Organization type
- Update frontend to remove snapshot routes/params and add publish dialog
- Add e2e tests for asset publish (immediate, with approvers, reuse, RBAC)
- Add migration script for converting legacy asset snapshots to documents
- Exclude ASSETS from snapshot type lists and e2e snapshot tests
- Move generated_documents SQL to coredata methods on Datum and Asset
- Clear generated document and SOA references on soft delete and archive

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

pkg/coredata/statement_of_applicability.go

@@ -313,3 +313,36 @@ WHERE
 
 	return nil
 }
+
+func (s StatementOfApplicability) ClearDocumentIDByDocumentIDs(
+	ctx context.Context,
+	conn pg.Tx,
+	documentIDs []gid.GID,
+) error {
+	ids := make([]string, len(documentIDs))
+	for i, id := range documentIDs {
+		ids[i] = id.String()
+	}
+
+	_, err := conn.Exec(
+		ctx,
+		`
+UPDATE
+	statements_of_applicability
+SET
+	document_id = NULL,
+	updated_at = @now
+WHERE
+	document_id = ANY(@ids)
+`,
+		pgx.NamedArgs{
+			"ids": ids,
+			"now": time.Now(),
+		},
+	)
+	if err != nil {
+		return fmt.Errorf("cannot clear statement of applicability document references: %w", err)
+	}
+
+	return nil
+}