fix(handlers): add rows.Err() checks after rows.Next() loops

Add deferred error checks following rows.Next() iteration in:
- ListDelegations (delegation.go): log on error, continue serving results
- org import reconcile orphan query (org.go): log + append to reconcileErrs

Fixes the rows.Err() gap identified in the delegated rows.Err() check PR
(#302, closed; replaced by this PR).  Two additional files already had
the check (activity.go, memories.go) — pattern applied consistently here.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

workspace-server/internal/handlers/delegation.go

@@ -645,6 +645,9 @@ func (h *DelegationHandler) ListDelegations(c *gin.Context) {
 		}
 		delegations = append(delegations, entry)
 	}
+	if err := rows.Err(); err != nil {
+		log.Printf("ListDelegations rows.Err: %v", err)
+	}
 
 	if delegations == nil {
 		delegations = []map[string]interface{}{}

workspace-server/internal/handlers/org.go

@@ -800,6 +800,10 @@ func (h *OrgHandler) Import(c *gin.Context) {
 						orphanIDs = append(orphanIDs, orphanID)
 					}
 				}
+				if err := rows.Err(); err != nil {
+					log.Printf("Org import reconcile: orphan query rows.Err: %v", err)
+					reconcileErrs = append(reconcileErrs, fmt.Sprintf("orphan query rows.Err: %v", err))
+				}
 				rows.Close()
 
 				for _, oid := range orphanIDs {