feat: total session tokens including sub-agents

src/ccstatusline.ts

@@ -40,6 +40,7 @@ import {
     getPackageVersion,
     getTerminalWidth
 } from './utils/terminal';
+import { isWidgetSubagentsEnabled } from './utils/token-subagents';
 import { prefetchUsageDataIfNeeded } from './utils/usage-prefetch';
 
 function hasSessionDurationInStatusJson(data: StatusJSON): boolean {
@@ -108,6 +109,9 @@ async function renderMultipleLines(data: StatusJSON) {
     const speedWidgetTypes = new Set(['output-speed', 'input-speed', 'total-speed']);
     const hasSpeedItems = lines.some(line => line.some(item => speedWidgetTypes.has(item.type)));
     const hasCompactionWidget = lines.some(line => line.some(item => item.type === 'compaction-counter'));
+    const subagentTokenWidgetTypes = new Set(['tokens-input', 'tokens-output', 'tokens-cached', 'tokens-total']);
+    const needsSessionTokens = lines.some(line => line.some(item => item.type === 'tokens-session-total'
+        || (subagentTokenWidgetTypes.has(item.type) && isWidgetSubagentsEnabled(item))));
     const hasThinkingEffortWidget = lines.some(line => line.some(item => item.type === 'thinking-effort'));
     const hasSessionNameWidget = lines.some(line => line.some(item => item.type === 'session-name'));
     const needsTranscriptThinkingEffort = hasThinkingEffortWidget
@@ -126,6 +130,7 @@ async function renderMultipleLines(data: StatusJSON) {
             includeSessionDuration: hasSessionClock && !hasSessionDurationInStatusJson(data),
             includeSpeedMetrics: hasSpeedItems,
             includeSubagents: true,
+            includeSubagentTokens: needsSessionTokens,
             speedWindowSeconds: Array.from(requestedSpeedWindows),
             includeCompactionStats: hasCompactionWidget,
             includeThinkingEffort: needsTranscriptThinkingEffort,
@@ -139,6 +144,7 @@ async function renderMultipleLines(data: StatusJSON) {
     ]);
 
     const tokenMetrics = transcriptAnalysis?.tokenMetrics ?? null;
+    const sessionTokenMetrics = transcriptAnalysis?.sessionTokenMetrics ?? null;
     const sessionDuration = transcriptAnalysis?.sessionDuration ?? null;
     const speedMetrics = transcriptAnalysis?.speedMetricsCollection?.sessionAverage ?? null;
     const windowedSpeedMetrics = transcriptAnalysis?.speedMetricsCollection?.windowed ?? null;
@@ -156,6 +162,7 @@ async function renderMultipleLines(data: StatusJSON) {
     const context: RenderContext = {
         data,
         tokenMetrics,
+        sessionTokenMetrics,
         speedMetrics,
         windowedSpeedMetrics,
         usageData,

src/types/RenderContext.ts

@@ -45,6 +45,7 @@ export interface CompactionData {
 export interface RenderContext {
     data?: StatusJSON;
     tokenMetrics?: TokenMetrics | null;
+    sessionTokenMetrics?: TokenMetrics | null;
     speedMetrics?: SpeedMetrics | null;
     windowedSpeedMetrics?: Record<string, SpeedMetrics> | null;
     usageData?: RenderUsageData | null;

src/utils/__tests__/jsonl-metrics.test.ts

@@ -29,6 +29,15 @@ async function getTokenMetrics(transcriptPath: string): Promise<TokenMetrics> {
     return analysis.tokenMetrics;
 }
 
+async function getSessionTokenMetrics(transcriptPath: string): Promise<TokenMetrics> {
+    const analysis = await getTranscriptAnalysis(transcriptPath, { includeSubagentTokens: true });
+    if (!analysis.sessionTokenMetrics) {
+        throw new Error('subagent-inclusive token metrics were requested but not collected');
+    }
+
+    return analysis.sessionTokenMetrics;
+}
+
 async function getSpeedMetricsCollection(
     transcriptPath: string,
     options: { includeSubagents?: boolean; windowSeconds?: number[] } = {}
@@ -786,6 +795,122 @@ describe('jsonl transcript metrics', () => {
         });
     });
 
+    it('leaves the main token metrics alone and counts sub-agents only in the session totals', async () => {
+        const root = fs.mkdtempSync(path.join(os.tmpdir(), 'ccstatusline-jsonl-token-sub-'));
+        tempRoots.push(root);
+        const transcriptPath = path.join(root, 'main.jsonl');
+        const subagentsDir = path.join(root, 'subagents');
+
+        fs.writeFileSync(transcriptPath, [
+            makeUsageLine({
+                timestamp: '2026-01-01T10:00:00.000Z',
+                input: 100, output: 50, cacheRead: 20, cacheCreate: 10
+            }),
+            // Inline sidechain entry that ALSO lives in the separate file below.
+            makeUsageLine({
+                timestamp: '2026-01-01T10:05:00.000Z',
+                input: 500, output: 60, cacheRead: 5, cacheCreate: 5,
+                isSidechain: true
+            }),
+            JSON.stringify({ type: 'progress', data: { agentId: 'x' } })
+        ].join('\n'));
+
+        fs.mkdirSync(subagentsDir, { recursive: true });
+        fs.writeFileSync(path.join(subagentsDir, 'agent-x.jsonl'), `${makeUsageLine({
+            timestamp: '2026-01-01T10:05:00.000Z',
+            input: 500, output: 60, cacheRead: 5, cacheCreate: 5,
+            isSidechain: true
+        })}\n`);
+
+        // Unchanged behavior: the main metrics count the inline rows and never
+        // read the separate file.
+        const mainOnly = await getTokenMetrics(transcriptPath);
+        expect(mainOnly).toEqual({
+            inputTokens: 600,
+            outputTokens: 110,
+            cachedTokens: 40,
+            cacheReadTokens: 25,
+            cacheCreationTokens: 15,
+            totalTokens: 750,
+            contextLength: 130
+        });
+
+        // Session totals: the inline sidechain rows are dropped because the
+        // file represents them, and the file is added once.
+        const sessionMetrics = await getSessionTokenMetrics(transcriptPath);
+        expect(sessionMetrics).toEqual({
+            inputTokens: 600,
+            outputTokens: 110,
+            cachedTokens: 40,
+            cacheReadTokens: 25,
+            cacheCreationTokens: 15,
+            totalTokens: 750,
+            contextLength: 130
+        });
+    });
+
+    it('keeps inline sidechain entries in the session totals when no sub-agent files exist', async () => {
+        const root = fs.mkdtempSync(path.join(os.tmpdir(), 'ccstatusline-jsonl-token-sub-'));
+        tempRoots.push(root);
+        const transcriptPath = path.join(root, 'main-no-files.jsonl');
+
+        fs.writeFileSync(transcriptPath, [
+            makeUsageLine({
+                timestamp: '2026-01-01T10:00:00.000Z',
+                input: 100, output: 50, cacheRead: 20, cacheCreate: 10
+            }),
+            makeUsageLine({
+                timestamp: '2026-01-01T10:05:00.000Z',
+                input: 500, output: 60, cacheRead: 5, cacheCreate: 5,
+                isSidechain: true
+            })
+        ].join('\n'));
+
+        // Older transcript format: nothing to subtract, so the inline rows stand.
+        const sessionMetrics = await getSessionTokenMetrics(transcriptPath);
+        expect(sessionMetrics).toEqual({
+            inputTokens: 600,
+            outputTokens: 110,
+            cachedTokens: 40,
+            cacheReadTokens: 25,
+            cacheCreationTokens: 15,
+            totalTokens: 750,
+            contextLength: 130
+        });
+    });
+
+    it('sums every referenced sub-agent transcript and ignores unreferenced ones', async () => {
+        const root = fs.mkdtempSync(path.join(os.tmpdir(), 'ccstatusline-jsonl-token-sub-'));
+        tempRoots.push(root);
+        const transcriptPath = path.join(root, 'main-multi.jsonl');
+        const subagentsDir = path.join(root, 'subagents');
+
+        fs.writeFileSync(transcriptPath, [
+            makeUsageLine({ timestamp: '2026-01-01T10:00:00.000Z', input: 10, output: 5 }),
+            JSON.stringify({ type: 'progress', data: { agentId: 'a' } }),
+            JSON.stringify({ type: 'progress', data: { agentId: 'b' } })
+        ].join('\n'));
+
+        fs.mkdirSync(subagentsDir, { recursive: true });
+        fs.writeFileSync(path.join(subagentsDir, 'agent-a.jsonl'),
+            `${makeUsageLine({ timestamp: '2026-01-01T10:01:00.000Z', input: 100, output: 200 })}\n`);
+        fs.writeFileSync(path.join(subagentsDir, 'agent-b.jsonl'),
+            `${makeUsageLine({ timestamp: '2026-01-01T10:02:00.000Z', input: 30, output: 40 })}\n`);
+        fs.writeFileSync(path.join(subagentsDir, 'agent-unreferenced.jsonl'),
+            `${makeUsageLine({ timestamp: '2026-01-01T10:03:00.000Z', input: 9999, output: 9999 })}\n`);
+
+        const sessionMetrics = await getSessionTokenMetrics(transcriptPath);
+        expect(sessionMetrics).toEqual({
+            inputTokens: 140,
+            outputTokens: 245,
+            cachedTokens: 0,
+            cacheReadTokens: 0,
+            cacheCreationTokens: 0,
+            totalTokens: 385,
+            contextLength: 10
+        });
+    });
+
     it('calculates speed metrics from user-to-assistant processing windows', async () => {
         const root = fs.mkdtempSync(path.join(os.tmpdir(), 'ccstatusline-jsonl-speed-'));
         tempRoots.push(root);

src/utils/__tests__/token-subagents.test.ts

@@ -0,0 +1,45 @@
+import {
+    describe,
+    expect,
+    it
+} from 'vitest';
+
+import type { WidgetItem } from '../../types/Widget';
+import {
+    SUBAGENTS_MARKER,
+    isWidgetSubagentsEnabled,
+    withWidgetSubagentsEnabled
+} from '../token-subagents';
+
+function makeItem(metadata?: Record<string, string>): WidgetItem {
+    return { id: '1', type: 'tokens-input', metadata };
+}
+
+describe('token-subagents helper', () => {
+    it('defaults to disabled', () => {
+        expect(isWidgetSubagentsEnabled(makeItem())).toBe(false);
+        expect(isWidgetSubagentsEnabled(makeItem({}))).toBe(false);
+    });
+
+    it('reads the includeSubagents flag', () => {
+        expect(isWidgetSubagentsEnabled(makeItem({ includeSubagents: 'true' }))).toBe(true);
+        expect(isWidgetSubagentsEnabled(makeItem({ includeSubagents: 'false' }))).toBe(false);
+    });
+
+    it('enables and clears the flag immutably', () => {
+        const base = makeItem({ color: 'red' });
+
+        const enabled = withWidgetSubagentsEnabled(base, true);
+        expect(enabled).not.toBe(base);
+        expect(isWidgetSubagentsEnabled(enabled)).toBe(true);
+        expect(enabled.metadata?.color).toBe('red');
+
+        const disabled = withWidgetSubagentsEnabled(enabled, false);
+        expect(isWidgetSubagentsEnabled(disabled)).toBe(false);
+        expect(disabled.metadata?.includeSubagents).toBeUndefined();
+    });
+
+    it('exposes the sigma marker', () => {
+        expect(SUBAGENTS_MARKER).toBe('Σ ');
+    });
+});