Fix missing results for parallel Eino tool calls.

Merge streaming tool outputs by CallID with ConcatMessages, pair same-name historical results, and FIFO-match duplicate IDs so concurrent nmap 1/2 and 2/2 stay distinct.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/static/js/monitor.js

@@ -6255,21 +6255,44 @@ function coalesceProcessDetailsToolPairs(details) {
                 createdAt: detail.createdAt,
                 data: Object.assign({}, data)
             };
-            if (id) callsById.set(id, copy);
+            if (id) {
+                let list = callsById.get(id);
+                if (!list) {
+                    list = [];
+                    callsById.set(id, list);
+                }
+                list.push(copy);
+            }
             fifoCalls.push(copy);
             out.push(copy);
-        } else         if (et === 'tool_result') {
+        } else if (et === 'tool_result') {
             let target = null;
             if (id && callsById.has(id)) {
-                target = callsById.get(id);
-            } else {
+                const list = callsById.get(id);
+                while (list.length) {
+                    const candidate = list.shift();
+                    if (candidate && candidate.data && !candidate.data._mergedResult) {
+                        target = candidate;
+                        break;
+                    }
+                }
+            }
+            if (!target) {
+                const resultName = String(data.toolName || '').trim().toLowerCase();
+                let anyUnmatched = null;
                 for (let j = 0; j < fifoCalls.length; j++) {
                     const c = fifoCalls[j];
-                    if (c && c.data && !c.data._mergedResult) {
+                    if (!c || !c.data || c.data._mergedResult) continue;
+                    if (!anyUnmatched) anyUnmatched = c;
+                    const callName = String(c.data.toolName || '').trim().toLowerCase();
+                    if (!resultName || !callName || callName === resultName) {
                         target = c;
                         break;
                     }
                 }
+                if (!target && id) {
+                    target = anyUnmatched;
+                }
             }
             if (target) {
                 // agentFacing 或较新的 tool_result 覆盖旧合并（历史数据可能含 reduction 前全量正文）

web/static/js/tool-result-args-backfill.test.cjs

@@ -16,3 +16,10 @@ test('历史 process_details 合并时也会从 tool_result 补齐 tool_call 参
     assert.match(source, /targetDetail\.data\.argumentsObj = resultArgs;/);
     assert.match(source, /targetDetail\.data\.arguments = JSON\.stringify\(resultArgs\);/);
 });
+
+test('同一 toolCallId 的多次调用按 FIFO 合并结果，避免后一次覆盖导致结果记录缺失', () => {
+    const source = fs.readFileSync('web/static/js/monitor.js', 'utf8');
+    assert.match(source, /list\.push\(copy\)/);
+    assert.match(source, /const candidate = list\.shift\(\)/);
+    assert.match(source, /callName === resultName/);
+});