feat: refine metadata catalog workflows

frontend/src/shell/database-management/DatabaseRelationships.tsx

@@ -389,7 +389,7 @@ export function DatabaseRelationships({
                 </optgroup>
                 <optgroup label="Synchronization">
                   <option value="relationships">Synchronize physical relationships</option>
-                  <option value="all">Synchronize the full schema for this database</option>
+                  <option value="all">Synchronize the full database schema</option>
                 </optgroup>
               </select>
               <Button type="button" size="sm" disabled={!selectedAction || Boolean(selectedActionUnavailable) || busy} aria-describedby={selectedActionUnavailable ? "relationship-action-reason" : undefined} onClick={() => void runSelectedAction()}><Play aria-hidden="true" />{busy ? selectedAction === "rebuild-generated" ? "Rebuilding…" : "Running…" : "Run action"}</Button>
@@ -414,7 +414,7 @@ export function DatabaseRelationships({
               {addUnavailable ? <span id="relationship-add-reason" className="sr-only">{addUnavailable}</span> : null}
               {selectedActionUnavailable ? <span id="relationship-action-reason" className="basis-full text-xs text-muted-foreground" role="status">{selectedActionUnavailable}</span> : null}
             </div>
-          ) : <Button type="button" disabled={!canManage || !bindingReady || busy || Boolean(database.activeSyncRun)} title={!bindingReady ? "Test the current database binding before synchronizing relationships" : undefined} onClick={() => void synchronize("relationships")}><RefreshCw />Sync relationships</Button>}
+          ) : <Button type="button" disabled={!canManage || !bindingReady || busy || Boolean(database.activeSyncRun)} title={!bindingReady ? "Test the current database binding before synchronizing relationships" : undefined} onClick={() => void synchronize("relationships")}><RefreshCw />Synchronize relationships</Button>}
         </div>
         {!bindingReady ? <div className="border-b border-border bg-muted/35 px-4 py-3 text-sm text-muted-foreground">{presentation === "fleet" ? "Test the current database binding in database details before synchronizing relationships." : "Test the current database binding from Overview before synchronizing relationships."}</div> : null}
         {fleetQueryError ?? <div className="relative min-h-[280px] flex-1">
@@ -430,7 +430,7 @@ export function DatabaseRelationships({
           title="Add relationship"
           description="Connect one source column to one primary-key target column."
           onClose={closeAdd}
-          closeLabel="Close add relationship"
+          closeLabel="Close relationship form"
           busy={busy}
           footer={(
             <>