fix(report): recompute token totals after subagent row, fix import order

- Recompute totalInputTokens, totalOutputTokens, totalCacheCreation,
  totalCacheRead, and grandTotal after injecting the "Subagents (combined)"
  row so tokenUsage.totals stays consistent with byModel rows
- Fix CostSection import order: external packages before path aliases,
  merge duplicate import type statements

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

src/renderer/components/report/sections/CostSection.tsx

@@ -6,8 +6,11 @@ import { DollarSign } from 'lucide-react';
 import { AssessmentBadge } from '../AssessmentBadge';
 import { ReportSection, sectionId } from '../ReportSection';
 
-import type { ModelTokenStats, ReportCostAnalysis } from '@renderer/types/sessionReport';
+import type {
-import type { ModelPricing } from '@renderer/types/sessionReport';
+  ModelPricing,
+  ModelTokenStats,
+  ReportCostAnalysis,
+} from '@renderer/types/sessionReport';
 
 const fmt = (v: number) => `$${v.toFixed(4)}`;
 const fmtK = (v: number) => (v >= 1000 ? `${(v / 1000).toFixed(1)}k` : String(v));

src/renderer/utils/sessionAnalyzer.ts

@@ -882,7 +882,7 @@ export function analyzeSession(detail: SessionDetail): SessionReport {
     totalCacheReadTokens += stats.cacheRead;
   }
 
-  const grandTotal =
+  let grandTotal =
     totalInputTokens + totalOutputTokens + totalCacheCreationTokens + totalCacheReadTokens;
 
   // --- Cost analysis ---
@@ -1150,6 +1150,14 @@ export function analyzeSession(detail: SessionDetail): SessionReport {
     const subagentLabel = 'Subagents (combined)';
     byModel[subagentLabel] = subagentTokenStats;
     modelStats.set(subagentLabel, subagentTokenStats);
+
+    // Update totals to include subagent tokens so the footer row stays consistent
+    totalInputTokens += subagentTokenStats.inputTokens;
+    totalOutputTokens += subagentTokenStats.outputTokens;
+    totalCacheCreationTokens += subagentTokenStats.cacheCreation;
+    totalCacheReadTokens += subagentTokenStats.cacheRead;
+    grandTotal =
+      totalInputTokens + totalOutputTokens + totalCacheCreationTokens + totalCacheReadTokens;
   }
 
   // --- Assessment computations ---