diff --git a/src/resources/extensions/gsd/auto-prompts.ts b/src/resources/extensions/gsd/auto-prompts.ts
index 5e1984c56..1ea0e3366 100644
--- a/src/resources/extensions/gsd/auto-prompts.ts
+++ b/src/resources/extensions/gsd/auto-prompts.ts
@@ -87,6 +87,11 @@ function buildSourceFilePaths(
     paths.push(`- **Decisions**: \`${relGsdRootFile("DECISIONS")}\``);
   }
 
+  const queuePath = resolveGsdRootFile(base, "QUEUE");
+  if (existsSync(queuePath)) {
+    paths.push(`- **Queue**: \`${relGsdRootFile("QUEUE")}\``);
+  }
+
   const contextPath = resolveMilestoneFile(base, mid, "CONTEXT");
   if (contextPath) {
     paths.push(`- **Milestone Context**: \`${relMilestoneFile(base, mid, "CONTEXT")}\``);
@@ -915,6 +920,16 @@ export async function buildPlanMilestonePrompt(mid: string, midTitle: string, ba
     const decisionsInline = await inlineDecisionsFromDb(base, mid, undefined, inlineLevel);
     if (decisionsInline) inlined.push(decisionsInline);
   }
+  const queuePath = resolveGsdRootFile(base, "QUEUE");
+  if (existsSync(queuePath)) {
+    const queueInline = await inlineFileSmart(
+      queuePath,
+      relGsdRootFile("QUEUE"),
+      "Project Queue",
+      `${mid} ${midTitle}`,
+    );
+    inlined.push(queueInline);
+  }
   const knowledgeInlinePM = await inlineGsdRootFile(base, "knowledge.md", "Project Knowledge");
   if (knowledgeInlinePM) inlined.push(knowledgeInlinePM);
   inlined.push(inlineTemplate("roadmap", "Roadmap"));
diff --git a/src/resources/extensions/gsd/tests/plan-milestone-queue-context.test.ts b/src/resources/extensions/gsd/tests/plan-milestone-queue-context.test.ts
new file mode 100644
index 000000000..83a2f955d
--- /dev/null
+++ b/src/resources/extensions/gsd/tests/plan-milestone-queue-context.test.ts
@@ -0,0 +1,48 @@
+import { describe, test } from "node:test";
+import assert from "node:assert/strict";
+import { mkdtempSync, mkdirSync, rmSync, writeFileSync } from "node:fs";
+import { join } from "node:path";
+import { tmpdir } from "node:os";
+
+import { buildPlanMilestonePrompt } from "../auto-prompts.ts";
+
+function createBase(): string {
+  const base = mkdtempSync(join(tmpdir(), "gsd-plan-queue-"));
+  mkdirSync(join(base, ".gsd", "milestones", "M010"), { recursive: true });
+  return base;
+}
+
+function cleanup(base: string): void {
+  rmSync(base, { recursive: true, force: true });
+}
+
+describe("plan-milestone queue context", () => {
+  test("includes queue brief when planning milestone without roadmap context", async () => {
+    const base = createBase();
+    try {
+      writeFileSync(
+        join(base, ".gsd", "QUEUE.md"),
+        [
+          "# Queue",
+          "",
+          "### M010: Analytics Dashboard — Interactivity, Intelligence & Demo Readiness",
+          "**Vision:** Ship a polished analytics dashboard with drilldowns and AI assistance.",
+          "",
+          "## Scope",
+          "- Interactivity",
+          "- Intelligence",
+          "- Demo readiness",
+          "",
+        ].join("\n"),
+      );
+
+      const prompt = await buildPlanMilestonePrompt("M010", "M010", base);
+
+      assert.match(prompt, /Source: `\.gsd\/QUEUE\.md`/);
+      assert.match(prompt, /Analytics Dashboard — Interactivity, Intelligence & Demo Readiness/);
+      assert.match(prompt, /Ship a polished analytics dashboard/);
+    } finally {
+      cleanup(base);
+    }
+  });
+});