diff --git a/apps/web/lib/xiaobao-risk.test.ts b/apps/web/lib/xiaobao-risk.test.ts
index 78d9dfe..51f4e38 100644
--- a/apps/web/lib/xiaobao-risk.test.ts
+++ b/apps/web/lib/xiaobao-risk.test.ts
@@ -128,3 +128,55 @@ test('calcXiaobaoVersionRisk preserves daily evidence on the returned risk objec
 
   assert.equal(risk.dailyEvidence, dailyEvidence);
 });
+
+test('calcXiaobaoVersionRisk uses silent risks from daily evidence', () => {
+  const silentRisk = {
+    key: 'no_progress_today',
+    title: '今日无进展',
+    detail: '进行中的任务今天没有动态。',
+    itemId: 'dev-1',
+    itemType: 'dev_task' as const,
+  };
+  const dailyEvidence: VersionDailyEvidence = {
+    todayDeliveries: [],
+    todayProgress: [],
+    todayRisks: [],
+    progressNotes: [],
+    needsProgressItems: [],
+    recentActivityCount: 0,
+    silentRisks: [silentRisk],
+  };
+
+  const risk = calcXiaobaoVersionRisk({
+    version: version(),
+    devTasks: [],
+    testCases: [],
+    bugs: [],
+    dailyEvidence,
+    now: new Date('2026-07-02T01:00:00.000Z'),
+  });
+
+  assert.deepEqual(risk.silentRisks, [silentRisk]);
+  assert.equal(risk.signals.silentRiskCount, 1);
+  assert.ok(risk.riskScore > 0);
+  assert.ok(risk.reasons.some((reason: { key: string }) => reason.key === 'silent_risk'));
+});
+
+test('calcXiaobaoVersionRisk preserves null expected release date as a compatible output value', () => {
+  const versionWithNullRelease = {
+    id: 'ver-null-release',
+    name: 'V1.1',
+    expectedReleaseDate: null,
+    members: [],
+  };
+
+  const risk = calcXiaobaoVersionRisk({
+    version: versionWithNullRelease,
+    devTasks: [],
+    testCases: [],
+    bugs: [],
+    now: new Date('2026-07-02T01:00:00.000Z'),
+  });
+
+  assert.equal(risk.expectedReleaseDate, null);
+});
diff --git a/apps/web/lib/xiaobao-risk.ts b/apps/web/lib/xiaobao-risk.ts
index 0b151e6..b676c64 100644
--- a/apps/web/lib/xiaobao-risk.ts
+++ b/apps/web/lib/xiaobao-risk.ts
@@ -15,7 +15,7 @@ export interface XiaobaoVersionRef {
   status?: string;
   productName?: string;
   projectName?: string;
-  expectedReleaseDate?: string;
+  expectedReleaseDate?: string | null;
   members?: Array<{ id?: string; name: string; role?: string }>;
 }
 
@@ -49,6 +49,7 @@ export interface XiaobaoVersionRisk {
   versionId: string;
   riskScore: number;
   riskLevel: XiaobaoRiskLevel;
+  expectedReleaseDate: string | null;
   confidence: number;
   confidenceLevel: XiaobaoConfidenceLevel;
   forecastReleaseDate?: string;
@@ -86,7 +87,7 @@ export function calcXiaobaoVersionRisk(input: CalcXiaobaoVersionRiskInput): Xiao
   const devTasks = input.devTasks ?? [];
   const testCases = input.testCases ?? [];
   const bugs = input.bugs ?? [];
-  const silentRisks = input.silentRisks ?? [];
+  const silentRisks = input.dailyEvidence?.silentRisks ?? [];
 
   const remainingDevHours = devTasks.reduce((sum, task) => {
     const estimate = getEstimateHours(task);
@@ -164,6 +165,15 @@ export function calcXiaobaoVersionRisk(input: CalcXiaobaoVersionRiskInput): Xiao
       count: failedTestCount,
     });
   }
+  if (silentRisks.length > 0) {
+    reasons.push({
+      key: 'silent_risk',
+      title: '静默风险',
+      detail: `发现 ${silentRisks.length} 个今日缺少进展或证据的风险项。`,
+      severity: 'warning',
+      count: silentRisks.length,
+    });
+  }
 
   const signals: XiaobaoRiskSignals = {
     unfinishedCount,
@@ -193,6 +203,7 @@ export function calcXiaobaoVersionRisk(input: CalcXiaobaoVersionRiskInput): Xiao
     versionId: input.version.id,
     riskScore,
     riskLevel,
+    expectedReleaseDate: input.version.expectedReleaseDate ?? null,
     confidence,
     confidenceLevel: getConfidenceLevel(confidence),
     forecastReleaseDate,
@@ -297,7 +308,7 @@ function getConfidenceLevel(confidence: number): XiaobaoConfidenceLevel {
   return 'low';
 }
 
-function parseDate(iso?: string): Date | undefined {
+function parseDate(iso?: string | null): Date | undefined {
   if (!iso) return undefined;
   const date = new Date(iso);
   return Number.isNaN(date.getTime()) ? undefined : date;