fix(changes): fingerprint projected ledger summaries

src/main/services/team/TaskChangeLedgerReader.ts

@@ -428,11 +428,7 @@ export class TaskChangeLedgerReader {
       return null;
     }
 
-    const provenance = this.buildLedgerProvenance(
+    const provenance = this.buildLedgerProvenanceFromSummaryBundle(bundle);
-      bundle.journalStamp,
-      bundle.integrity,
-      bundle.schemaVersion
-    );
 
     if (
       freshness &&
@@ -450,11 +446,7 @@ export class TaskChangeLedgerReader {
     ) {
       return {
         bundle,
-        provenance: this.buildLedgerProvenance(
+        provenance: this.buildLedgerProvenanceFromSummaryBundle(bundle, journalStamp),
-          journalStamp,
-          bundle.integrity,
-          bundle.schemaVersion
-        ),
         mode: 'validated',
       };
     }
@@ -694,6 +686,86 @@ export class TaskChangeLedgerReader {
     return this.buildLedgerProvenance(journalStamp, integrity, bundleSchemaVersion);
   }
 
+  private buildLedgerProvenanceFromSummaryBundle(
+    bundle: LedgerSummaryBundleV2,
+    journalStamp: TaskChangeJournalStamp = bundle.journalStamp
+  ): TaskChangeProvenance {
+    return {
+      sourceKind: 'ledger',
+      sourceFingerprint: this.hashFingerprintPayload(this.buildProjectedSummaryIdentity(bundle)),
+      journalStamp,
+      bundleSchemaVersion: bundle.schemaVersion,
+      integrity: bundle.integrity,
+    };
+  }
+
+  private buildProjectedSummaryIdentity(bundle: LedgerSummaryBundleV2): unknown {
+    return {
+      kind: 'ledger-summary-v2-projected-identity',
+      schemaVersion: bundle.schemaVersion,
+      bundleKind: bundle.bundleKind,
+      taskId: bundle.taskId,
+      integrity: bundle.integrity,
+      totalFiles: bundle.totalFiles,
+      totalLinesAdded: bundle.totalLinesAdded,
+      totalLinesRemoved: bundle.totalLinesRemoved,
+      diffStatCompleteness: bundle.diffStatCompleteness,
+      confidence: bundle.confidence,
+      files: [...bundle.files]
+        .map((file) => ({
+          changeKey: this.normalizeSummaryChangeKey(file),
+          filePath: normalizePathForComparison(file.filePath),
+          relativePath: normalizePathForComparison(file.relativePath),
+          displayPath: file.displayPath ? normalizePathForComparison(file.displayPath) : undefined,
+          linesAdded: file.linesAdded,
+          linesRemoved: file.linesRemoved,
+          diffStatKnown: file.diffStatKnown,
+          latestOperation: file.latestOperation,
+          createdInTask: file.createdInTask,
+          deletedInTask: file.deletedInTask,
+          baselineExists: file.baselineExists,
+          finalExists: file.finalExists,
+          latestBeforeHash: file.latestBeforeHash,
+          latestAfterHash: file.latestAfterHash,
+          latestBeforeState: this.contentStateFingerprint(file.latestBeforeState),
+          latestAfterState: this.contentStateFingerprint(file.latestAfterState),
+          contentAvailability: file.contentAvailability,
+          reviewability: file.reviewability,
+          relation: file.relation
+            ? {
+                kind: file.relation.kind,
+                oldPath: normalizePathForComparison(file.relation.oldPath),
+                newPath: normalizePathForComparison(file.relation.newPath),
+              }
+            : undefined,
+          worktreePath: file.worktreePath
+            ? normalizePathForComparison(file.worktreePath)
+            : undefined,
+          worktreeBranch: file.worktreeBranch,
+          baseWorkspaceRoot: file.baseWorkspaceRoot
+            ? normalizePathForComparison(file.baseWorkspaceRoot)
+            : undefined,
+        }))
+        .sort(
+          (left, right) =>
+            left.changeKey.localeCompare(right.changeKey) ||
+            left.filePath.localeCompare(right.filePath)
+        ),
+    };
+  }
+
+  private contentStateFingerprint(state: LedgerContentState | undefined): unknown {
+    if (!state) {
+      return undefined;
+    }
+    return {
+      exists: state.exists,
+      sha256: state.sha256,
+      sizeBytes: state.sizeBytes,
+      unavailableReason: state.unavailableReason,
+    };
+  }
+
   private hashFingerprintPayload(payload: unknown): string {
     return createHash('sha256').update(JSON.stringify(payload)).digest('hex');
   }

test/main/services/team/TaskChangeLedgerReader.test.ts

@@ -614,6 +614,91 @@ describe('TaskChangeLedgerReader', () => {
     );
   });
 
+  it('keeps v2 provenance fingerprint stable when only raw journal metadata changes', async () => {
+    tmpDir = await makeSummaryLedgerBundleV2({
+      bundle: {
+        journalStamp: { events: { bytes: 10, mtimeMs: 1, tailSha256: 'raw-a' } },
+        eventCount: 1,
+        noticeCount: 0,
+        warningCount: 0,
+        warnings: [],
+      },
+      file: {
+        eventCount: 1,
+        firstTimestamp: '2026-03-01T10:00:00.000Z',
+        lastTimestamp: '2026-03-01T10:00:00.000Z',
+        agentIds: ['alice@team'],
+      },
+    });
+    const reader = new TaskChangeLedgerReader();
+    const first = await reader.readTaskChanges({
+      teamName: 'team',
+      taskId: TASK_ID,
+      projectDir: tmpDir,
+      projectPath: '/repo',
+      includeDetails: false,
+    });
+
+    tmpDir = await makeSummaryLedgerBundleV2({
+      bundle: {
+        generatedAt: '2026-03-01T11:00:00.000Z',
+        journalStamp: { events: { bytes: 999, mtimeMs: 99, tailSha256: 'raw-b' } },
+        eventCount: 7,
+        noticeCount: 3,
+        warningCount: 1,
+        warnings: ['raw journal had a recovered warning'],
+      },
+      file: {
+        eventCount: 7,
+        firstTimestamp: '2026-03-01T09:00:00.000Z',
+        lastTimestamp: '2026-03-01T11:00:00.000Z',
+        agentIds: ['alice@team', 'bob@team'],
+      },
+    });
+    const second = await reader.readTaskChanges({
+      teamName: 'team',
+      taskId: TASK_ID,
+      projectDir: tmpDir,
+      projectPath: '/repo',
+      includeDetails: false,
+    });
+
+    expect(first?.provenance?.sourceFingerprint).toBe(second?.provenance?.sourceFingerprint);
+  });
+
+  it('changes v2 provenance fingerprint when projected file evidence changes', async () => {
+    tmpDir = await makeSummaryLedgerBundleV2({
+      file: {
+        latestAfterHash: sha('after-v1'),
+        latestAfterState: { exists: true, sha256: sha('after-v1'), sizeBytes: 8 },
+      },
+    });
+    const reader = new TaskChangeLedgerReader();
+    const first = await reader.readTaskChanges({
+      teamName: 'team',
+      taskId: TASK_ID,
+      projectDir: tmpDir,
+      projectPath: '/repo',
+      includeDetails: false,
+    });
+
+    tmpDir = await makeSummaryLedgerBundleV2({
+      file: {
+        latestAfterHash: sha('after-v2'),
+        latestAfterState: { exists: true, sha256: sha('after-v2'), sizeBytes: 8 },
+      },
+    });
+    const second = await reader.readTaskChanges({
+      teamName: 'team',
+      taskId: TASK_ID,
+      projectDir: tmpDir,
+      projectPath: '/repo',
+      includeDetails: false,
+    });
+
+    expect(first?.provenance?.sourceFingerprint).not.toBe(second?.provenance?.sourceFingerprint);
+  });
+
   it('keeps identical relative rename relations isolated by worktree path', async () => {
     tmpDir = await fsTempDir();
     const bundleDir = path.join(tmpDir, '.board-task-changes', 'bundles');
@@ -969,6 +1054,74 @@ async function makeLedgerBundle(params: {
   return dir;
 }
 
+async function makeSummaryLedgerBundleV2(params: {
+  bundle?: Record<string, unknown>;
+  file?: Record<string, unknown>;
+} = {}): Promise<string> {
+  const dir = await fsTempDir();
+  const bundleDir = path.join(dir, '.board-task-changes', 'bundles');
+  await mkdir(bundleDir, { recursive: true });
+  const file = {
+    changeKey: 'path:/repo/src/file.ts',
+    filePath: '/repo/src/file.ts',
+    relativePath: 'src/file.ts',
+    linesAdded: 1,
+    linesRemoved: 1,
+    diffStatKnown: true,
+    eventCount: 1,
+    firstTimestamp: '2026-03-01T10:00:00.000Z',
+    lastTimestamp: '2026-03-01T10:00:00.000Z',
+    latestOperation: 'modify',
+    createdInTask: false,
+    deletedInTask: false,
+    latestBeforeHash: sha('before'),
+    latestAfterHash: sha('after'),
+    latestBeforeState: { exists: true, sha256: sha('before'), sizeBytes: 6 },
+    latestAfterState: { exists: true, sha256: sha('after'), sizeBytes: 5 },
+    contentAvailability: 'full-text',
+    reviewability: 'full-text',
+    agentIds: ['alice@team'],
+    ...params.file,
+  };
+  await writeFile(
+    path.join(bundleDir, `${encodeURIComponent(TASK_ID)}.json`),
+    JSON.stringify({
+      schemaVersion: 2,
+      source: 'task-change-ledger',
+      bundleKind: 'summary',
+      taskId: TASK_ID,
+      generatedAt: '2026-03-01T10:00:00.000Z',
+      journalStamp: { events: { bytes: 10, mtimeMs: 1, tailSha256: 'raw' } },
+      integrity: 'ok',
+      eventCount: 1,
+      noticeCount: 0,
+      scope: {
+        confidence: { tier: 1, label: 'high', reason: 'bundle' },
+        memberName: 'alice',
+        agentIds: ['alice@team'],
+        startTimestamp: '2026-03-01T10:00:00.000Z',
+        endTimestamp: '2026-03-01T10:00:00.000Z',
+        toolUseIds: ['tool-1'],
+        toolUseCount: 1,
+        phaseSet: ['work'],
+        visibleFileCount: 1,
+        contributors: [],
+      },
+      files: [file],
+      totalLinesAdded: 1,
+      totalLinesRemoved: 1,
+      diffStatCompleteness: 'complete',
+      totalFiles: 1,
+      confidence: 'high',
+      warningCount: 0,
+      warnings: [],
+      ...params.bundle,
+    }),
+    'utf8'
+  );
+  return dir;
+}
+
 async function fsTempDir(): Promise<string> {
   return mkdtemp(path.join(os.tmpdir(), 'ledger-reader-'));
 }

test/renderer/store/changeReviewSlice.test.ts

@@ -1651,4 +1651,84 @@ describe('changeReviewSlice task changes', () => {
     });
     expect(store.getState().activeChangeSet).toEqual(current);
   });
+
+  it('does not force re-review when ledger provenance stays stable despite warning changes', async () => {
+    const store = createSliceStore();
+    const current = {
+      ...makeTaskChangeSet('task-ledger', '/repo/file.ts'),
+      provenance: {
+        sourceKind: 'ledger',
+        sourceFingerprint: 'projected-fp-stable',
+      },
+      warnings: [],
+    };
+    const fresh = {
+      ...current,
+      computedAt: '2026-03-01T13:00:00.000Z',
+      warnings: ['raw journal warning changed'],
+    };
+    hoisted.getTaskChanges.mockResolvedValueOnce(fresh);
+    hoisted.applyDecisions.mockResolvedValueOnce({
+      applied: 1,
+      skipped: 0,
+      conflicts: 0,
+      errors: [],
+    });
+
+    store.setState({
+      activeChangeSet: current,
+      hunkDecisions: { '/repo/file.ts:0': 'rejected' },
+      fileDecisions: { '/repo/file.ts': 'rejected' },
+      fileChunkCounts: { '/repo/file.ts': 1 },
+      changeSetEpoch: 0,
+      fileContentVersionByPath: {},
+    });
+
+    await store.getState().applyReview('team-a', 'task-ledger');
+
+    expect(store.getState().applyError).toBeNull();
+    expect(hoisted.applyDecisions).toHaveBeenCalledTimes(1);
+    expect(store.getState().activeChangeSet).toEqual(current);
+  });
+
+  it('forces re-review when ledger projected provenance changes with the same file paths', async () => {
+    const store = createSliceStore();
+    const current = {
+      ...makeTaskChangeSet('task-ledger', '/repo/file.ts'),
+      provenance: {
+        sourceKind: 'ledger',
+        sourceFingerprint: 'projected-fp-v1',
+      },
+    };
+    const fresh = {
+      ...current,
+      provenance: {
+        sourceKind: 'ledger',
+        sourceFingerprint: 'projected-fp-v2',
+      },
+    };
+    hoisted.getTaskChanges.mockResolvedValueOnce(fresh);
+
+    store.setState({
+      activeChangeSet: current,
+      hunkDecisions: { '/repo/file.ts:0': 'rejected' },
+      fileDecisions: { '/repo/file.ts': 'rejected' },
+      fileChunkCounts: { '/repo/file.ts': 1 },
+      reviewUndoStack: [{ hunkDecisions: { '/repo/file.ts:0': 'rejected' }, fileDecisions: { '/repo/file.ts': 'rejected' } }],
+      changeSetEpoch: 2,
+      fileContentVersionByPath: { '/repo/file.ts': 3 },
+    });
+
+    await store.getState().applyReview('team-a', 'task-ledger');
+
+    expect(hoisted.applyDecisions).not.toHaveBeenCalled();
+    expect(store.getState().activeChangeSet).toEqual(fresh);
+    expect(store.getState().applyError).toBe(
+      'Changes have been updated since you started reviewing. Please re-review.'
+    );
+    expect(store.getState().hunkDecisions).toEqual({});
+    expect(store.getState().fileDecisions).toEqual({});
+    expect(store.getState().reviewUndoStack).toEqual([]);
+    expect(store.getState().fileContentVersionByPath).toEqual({});
+  });
 });