diff --git a/src/core/scanner.ts b/src/core/scanner.ts
index 1ade412..5c339b5 100644
--- a/src/core/scanner.ts
+++ b/src/core/scanner.ts
@@ -1,14 +1,16 @@
 import { readdir, stat, readFile } from "node:fs/promises";
 import { join } from "node:path";
-import type { ChangeStatus } from "../types.ts";
+import type { ChangeStatus, DocumentStatus, RuneConfig } from "../types.ts";
 import { getChangesDir, getArchiveDir } from "./config.ts";
 import { parseTasks } from "./task-parser.ts";
 
 export async function scanChanges(
   projectRoot: string,
+  config?: RuneConfig,
 ): Promise<ChangeStatus[]> {
   const changesDir = getChangesDir(projectRoot);
   const results: ChangeStatus[] = [];
+  const planDocs = config?.stages.plan?.documents;
 
   try {
     const entries = await readdir(changesDir);
@@ -17,11 +19,34 @@ export async function scanChanges(
       const entryStat = await stat(entryPath);
       if (!entryStat.isDirectory()) continue;
 
-      const docs = await readdir(entryPath);
-      const documents = docs.filter((d) => d.endsWith(".md"));
+      const files = await readdir(entryPath);
+      const mdFiles = new Set(files.filter((f) => f.endsWith(".md")));
+
+      let documents: DocumentStatus[];
+
+      if (planDocs) {
+        documents = planDocs.map((docConfig) => {
+          const fileName = `${docConfig.name}.md`;
+          const completed = mdFiles.has(fileName);
+          const deps = docConfig.depend ?? [];
+          const dependMet =
+            deps.length === 0 ||
+            deps.every((dep) => mdFiles.has(`${dep}.md`));
+          return { name: docConfig.name, completed, dependMet };
+        });
+      } else {
+        documents = Array.from(mdFiles).map((fileName) => ({
+          name: fileName.replace(/\.md$/, ""),
+          completed: true,
+          dependMet: true,
+        }));
+      }
+
+      const planCompleted = planDocs ? documents.every((d) => d.completed) : false;
+      const buildUnlocked = planCompleted;
 
       let taskProgress: { completed: number; total: number } | null = null;
-      const taskFile = docs.find((d) => d === "task.md");
+      const taskFile = files.find((d) => d === "task.md");
       if (taskFile) {
         const content = await readFile(join(entryPath, taskFile), "utf-8");
         const tasks = parseTasks(content);
@@ -31,7 +56,13 @@ export async function scanChanges(
         };
       }
 
-      results.push({ name: entry, documents, taskProgress });
+      results.push({
+        name: entry,
+        documents,
+        planCompleted,
+        buildUnlocked,
+        taskProgress,
+      });
     }
   } catch {
   }
diff --git a/tests/core/scanner.test.ts b/tests/core/scanner.test.ts
index 42ff04a..bd186eb 100644
--- a/tests/core/scanner.test.ts
+++ b/tests/core/scanner.test.ts
@@ -2,6 +2,7 @@ import { describe, it, expect, beforeEach, afterEach } from "bun:test";
 import { mkdir, writeFile, rm } from "node:fs/promises";
 import { join } from "node:path";
 import { scanChanges, scanArchives } from "../../src/core/scanner.ts";
+import type { RuneConfig } from "../../src/types.ts";
 
 const TMP_DIR = join(import.meta.dir, "__tmp_scanner_test__");
 
@@ -32,8 +33,11 @@ describe("scanChanges", () => {
     const changes = await scanChanges(TMP_DIR);
     expect(changes).toHaveLength(1);
     expect(changes[0].name).toBe("user-auth");
-    expect(changes[0].documents).toContain("design.md");
-    expect(changes[0].documents).toContain("task.md");
+    const docNames = changes[0].documents.map((d) => `${d.name}.md`);
+    expect(docNames).toContain("design.md");
+    expect(docNames).toContain("task.md");
+    expect(changes[0].planCompleted).toBe(false);
+    expect(changes[0].buildUnlocked).toBe(false);
     expect(changes[0].taskProgress).toEqual({ completed: 1, total: 2 });
   });
 
@@ -57,6 +61,93 @@ describe("scanChanges", () => {
     const changes = await scanChanges(TMP_DIR);
     expect(changes).toHaveLength(2);
   });
+
+  it("返回 DocumentStatus 含 completed 和 dependMet", async () => {
+    const changesDir = join(TMP_DIR, ".rune", "changes");
+    await mkdir(join(changesDir, "user-auth"), { recursive: true });
+    await writeFile(join(changesDir, "user-auth", "design.md"), "# 设计");
+
+    const config: RuneConfig = {
+      stages: {
+        plan: {
+          documents: [
+            { name: "design", prompt: "生成设计" },
+            { name: "task", prompt: "生成任务", depend: ["design"] },
+          ],
+        },
+      },
+    };
+
+    const changes = await scanChanges(TMP_DIR, config);
+    expect(changes).toHaveLength(1);
+    expect(changes[0].documents).toHaveLength(2);
+    expect(changes[0].documents[0]).toEqual({
+      name: "design",
+      completed: true,
+      dependMet: true,
+    });
+    expect(changes[0].documents[1]).toEqual({
+      name: "task",
+      completed: false,
+      dependMet: true,
+    });
+    expect(changes[0].planCompleted).toBe(false);
+    expect(changes[0].buildUnlocked).toBe(false);
+  });
+
+  it("depend 未满足时 dependMet 为 false", async () => {
+    const changesDir = join(TMP_DIR, ".rune", "changes");
+    await mkdir(join(changesDir, "user-auth"), { recursive: true });
+
+    const config: RuneConfig = {
+      stages: {
+        plan: {
+          documents: [
+            { name: "design", prompt: "生成设计" },
+            { name: "task", prompt: "生成任务", depend: ["design"] },
+          ],
+        },
+      },
+    };
+
+    const changes = await scanChanges(TMP_DIR, config);
+    expect(changes[0].documents[1].dependMet).toBe(false);
+  });
+
+  it("所有文档完成时 planCompleted 和 buildUnlocked 为 true", async () => {
+    const changesDir = join(TMP_DIR, ".rune", "changes");
+    await mkdir(join(changesDir, "user-auth"), { recursive: true });
+    await writeFile(join(changesDir, "user-auth", "design.md"), "# 设计");
+    await writeFile(join(changesDir, "user-auth", "task.md"), "- [ ] 任务");
+
+    const config: RuneConfig = {
+      stages: {
+        plan: {
+          documents: [
+            { name: "design", prompt: "生成设计" },
+            { name: "task", prompt: "生成任务" },
+          ],
+        },
+      },
+    };
+
+    const changes = await scanChanges(TMP_DIR, config);
+    expect(changes[0].planCompleted).toBe(true);
+    expect(changes[0].buildUnlocked).toBe(true);
+  });
+
+  it("无 config 时使用文件扫描兼容模式", async () => {
+    const changesDir = join(TMP_DIR, ".rune", "changes");
+    await mkdir(join(changesDir, "feature-a"), { recursive: true });
+    await writeFile(join(changesDir, "feature-a", "design.md"), "# 设计");
+
+    const changes = await scanChanges(TMP_DIR);
+    expect(changes).toHaveLength(1);
+    expect(changes[0].documents[0].name).toBe("design");
+    expect(changes[0].documents[0].completed).toBe(true);
+    expect(changes[0].planCompleted).toBe(false);
+    expect(changes[0].buildUnlocked).toBe(false);
+  });
 });
 
 describe("scanArchives", () => {