Fix UI types to match actual backend API

Validated against live OpenAPI spec at /api/v1/api-docs. Fixes:
- duration → durationMs (all models)
- Remove processorCount (not in ExecutionSummary)
- Remove ProcessorNode.index and .uri (not in backend)
- ProcessorSnapshot is Record<string,string>, not structured object
- Add missing fields: endTime, diagramContentHash, exchangeId, etc.
- Save openapi.json from live server

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ui/src/pages/executions/ResultsTable.tsx

@@ -52,7 +52,6 @@ export function ResultsTable({ results, loading }: ResultsTableProps) {
             <th className={styles.th}>Route</th>
             <th className={styles.th}>Correlation ID</th>
             <th className={styles.th}>Duration</th>
-            <th className={styles.th}>Processors</th>
           </tr>
         </thead>
         <tbody>
@@ -101,13 +100,12 @@ function ResultRow({
           {exec.correlationId ?? '-'}
         </td>
         <td className={styles.td}>
-          <DurationBar duration={exec.duration} />
+          <DurationBar duration={exec.durationMs} />
         </td>
-        <td className={`${styles.td} mono text-muted`}>{exec.processorCount}</td>
       </tr>
       {isExpanded && (
         <tr className={styles.detailRowVisible}>
-          <td className={styles.detailCell} colSpan={8}>
+          <td className={styles.detailCell} colSpan={7}>
             <div className={styles.detailContent}>
               <ProcessorTree executionId={exec.executionId} />
               <ExchangeDetail execution={exec} />