diff --git a/src/resources/extensions/gsd/auto-prompts.ts b/src/resources/extensions/gsd/auto-prompts.ts
index c507035f5..5e1984c56 100644
--- a/src/resources/extensions/gsd/auto-prompts.ts
+++ b/src/resources/extensions/gsd/auto-prompts.ts
@@ -1392,6 +1392,21 @@ export async function buildValidateMilestonePrompt(
     if (uatInline) inlined.push(uatInline);
   }
 
+  // Aggregate unresolved follow-ups and known limitations across slices
+  const outstandingItems: string[] = [];
+  for (const sid of valSliceIds) {
+    const summaryPath = resolveSliceFile(base, mid, sid, "SUMMARY");
+    if (!summaryPath) continue;
+    const content = await loadFile(summaryPath);
+    if (!content) continue;
+    const summary = parseSummary(content);
+    if (summary.followUps) outstandingItems.push(`- **${sid} Follow-ups:** ${summary.followUps.trim()}`);
+    if (summary.knownLimitations) outstandingItems.push(`- **${sid} Known Limitations:** ${summary.knownLimitations.trim()}`);
+  }
+  if (outstandingItems.length > 0) {
+    inlined.push(`### Outstanding Items (aggregated from slice summaries)\n\nThese follow-ups and known limitations were documented during slice completion but have not been resolved.\n\n${outstandingItems.join('\n')}`);
+  }
+
   // Inline existing VALIDATION file if this is a re-validation round
   const validationPath = resolveMilestoneFile(base, mid, "VALIDATION");
   const validationRel = relMilestoneFile(base, mid, "VALIDATION");
diff --git a/src/resources/extensions/gsd/files.ts b/src/resources/extensions/gsd/files.ts
index c2095ab70..9bd194604 100644
--- a/src/resources/extensions/gsd/files.ts
+++ b/src/resources/extensions/gsd/files.ts
@@ -269,6 +269,8 @@ function _parseSummaryImpl(content: string): Summary {
       whatHappened: nativeResult.whatHappened,
       deviations: nativeResult.deviations,
       filesModified: nativeResult.filesModified,
+      followUps: extractSection(content, 'Follow-ups') ?? '',
+      knownLimitations: extractSection(content, 'Known Limitations') ?? '',
     };
   }
 
@@ -330,7 +332,10 @@ function _parseSummaryImpl(content: string): Summary {
     }
   }
 
-  return { frontmatter, title, oneLiner, whatHappened, deviations, filesModified };
+  const followUps = extractSection(body, 'Follow-ups') ?? '';
+  const knownLimitations = extractSection(body, 'Known Limitations') ?? '';
+
+  return { frontmatter, title, oneLiner, whatHappened, deviations, filesModified, followUps, knownLimitations };
 }
 
 // ─── Continue Parser ───────────────────────────────────────────────────────
diff --git a/src/resources/extensions/gsd/types.ts b/src/resources/extensions/gsd/types.ts
index e56093f6a..ffecfc75e 100644
--- a/src/resources/extensions/gsd/types.ts
+++ b/src/resources/extensions/gsd/types.ts
@@ -157,6 +157,8 @@ export interface Summary {
   whatHappened: string;
   deviations: string;
   filesModified: FileModified[];
+  followUps: string;
+  knownLimitations: string;
 }
 
 // ─── Continue-Here ─────────────────────────────────────────────────────────