diff --git a/apps/server/src/routes/worktree/routes/switch-branch.ts b/apps/server/src/routes/worktree/routes/switch-branch.ts
index d087341b..63be752b 100644
--- a/apps/server/src/routes/worktree/routes/switch-branch.ts
+++ b/apps/server/src/routes/worktree/routes/switch-branch.ts
@@ -16,6 +16,21 @@ import { getErrorMessage, logError } from '../common.js';
 
 const execAsync = promisify(exec);
 
+function isUntrackedLine(line: string): boolean {
+  return line.startsWith('?? ');
+}
+
+function isExcludedWorktreeLine(line: string): boolean {
+  return line.includes('.worktrees/') || line.endsWith('.worktrees');
+}
+
+function isBlockingChangeLine(line: string): boolean {
+  if (!line.trim()) return false;
+  if (isExcludedWorktreeLine(line)) return false;
+  if (isUntrackedLine(line)) return false;
+  return true;
+}
+
 /**
  * Check if there are uncommitted changes in the working directory
  * Excludes .worktrees/ directory which is created by automaker
@@ -23,15 +38,7 @@ const execAsync = promisify(exec);
 async function hasUncommittedChanges(cwd: string): Promise<boolean> {
   try {
     const { stdout } = await execAsync('git status --porcelain', { cwd });
-    const lines = stdout
-      .trim()
-      .split('\n')
-      .filter((line) => {
-        if (!line.trim()) return false;
-        // Exclude .worktrees/ directory (created by automaker)
-        if (line.includes('.worktrees/') || line.endsWith('.worktrees')) return false;
-        return true;
-      });
+    const lines = stdout.trim().split('\n').filter(isBlockingChangeLine);
     return lines.length > 0;
   } catch {
     return false;
@@ -45,15 +52,7 @@ async function hasUncommittedChanges(cwd: string): Promise<boolean> {
 async function getChangesSummary(cwd: string): Promise<string> {
   try {
     const { stdout } = await execAsync('git status --short', { cwd });
-    const lines = stdout
-      .trim()
-      .split('\n')
-      .filter((line) => {
-        if (!line.trim()) return false;
-        // Exclude .worktrees/ directory
-        if (line.includes('.worktrees/') || line.endsWith('.worktrees')) return false;
-        return true;
-      });
+    const lines = stdout.trim().split('\n').filter(isBlockingChangeLine);
     if (lines.length === 0) return '';
     if (lines.length <= 5) return lines.join(', ');
     return `${lines.slice(0, 5).join(', ')} and ${lines.length - 5} more files`;
diff --git a/apps/server/src/services/auto-mode-service.ts b/apps/server/src/services/auto-mode-service.ts
index 0c7416b9..ffb87591 100644
--- a/apps/server/src/services/auto-mode-service.ts
+++ b/apps/server/src/services/auto-mode-service.ts
@@ -3718,13 +3718,14 @@ Format your response as a structured markdown document.`;
           // Recovery cases:
           // 1. Standard pending/ready/backlog statuses
           // 2. Features with approved plans that have incomplete tasks (crash recovery)
-          // 3. Features stuck in 'in_progress' status (crash recovery)
+          // 3. Features stuck in 'in_progress' or 'interrupted' status (crash recovery)
           // 4. Features with 'generating' planSpec status (spec generation was interrupted)
           const needsRecovery =
             feature.status === 'pending' ||
             feature.status === 'ready' ||
             feature.status === 'backlog' ||
             feature.status === 'in_progress' || // Recover features that were in progress when server crashed
+            feature.status === 'interrupted' || // Recover features explicitly marked interrupted on shutdown
             (feature.planSpec?.status === 'approved' &&
               (feature.planSpec.tasksCompleted ?? 0) < (feature.planSpec.tasksTotal ?? 0)) ||
             feature.planSpec?.status === 'generating'; // Recover interrupted spec generation
@@ -3764,7 +3765,7 @@ Format your response as a structured markdown document.`;
 
       const worktreeDesc = branchName ? `worktree ${branchName}` : 'main worktree';
       logger.info(
-        `[loadPendingFeatures] Found ${allFeatures.length} total features, ${pendingFeatures.length} candidates (pending/ready/backlog/in_progress/approved_with_pending_tasks/generating) for ${worktreeDesc}`
+        `[loadPendingFeatures] Found ${allFeatures.length} total features, ${pendingFeatures.length} candidates (pending/ready/backlog/in_progress/interrupted/approved_with_pending_tasks/generating) for ${worktreeDesc}`
       );
 
       if (pendingFeatures.length === 0) {
@@ -5536,9 +5537,10 @@ This mock response was generated because AUTOMAKER_MOCK_AGENT=true was set.
             continue;
           }
 
-          // Check if feature was interrupted (in_progress or pipeline_*)
+          // Check if feature was interrupted (in_progress/interrupted or pipeline_*)
           if (
             feature.status === 'in_progress' ||
+            feature.status === 'interrupted' ||
             (feature.status && feature.status.startsWith('pipeline_'))
           ) {
             // Check if context (agent-output.md) exists
diff --git a/apps/server/tests/unit/routes/worktree/switch-branch.test.ts b/apps/server/tests/unit/routes/worktree/switch-branch.test.ts
new file mode 100644
index 00000000..2cd868c6
--- /dev/null
+++ b/apps/server/tests/unit/routes/worktree/switch-branch.test.ts
@@ -0,0 +1,106 @@
+import { describe, it, expect, vi, beforeEach, type Mock } from 'vitest';
+import type { Request, Response } from 'express';
+import { createMockExpressContext } from '../../../utils/mocks.js';
+
+vi.mock('child_process', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('child_process')>();
+  return {
+    ...actual,
+    exec: vi.fn(),
+  };
+});
+
+vi.mock('util', async (importOriginal) => {
+  const actual = await importOriginal<typeof import('util')>();
+  return {
+    ...actual,
+    promisify: (fn: unknown) => fn,
+  };
+});
+
+import { exec } from 'child_process';
+import { createSwitchBranchHandler } from '@/routes/worktree/routes/switch-branch.js';
+
+const mockExec = exec as Mock;
+
+describe('switch-branch route', () => {
+  let req: Request;
+  let res: Response;
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+    const context = createMockExpressContext();
+    req = context.req;
+    res = context.res;
+  });
+
+  it('should allow switching when only untracked files exist', async () => {
+    req.body = {
+      worktreePath: '/repo/path',
+      branchName: 'feature/test',
+    };
+
+    mockExec.mockImplementation(async (command: string) => {
+      if (command === 'git rev-parse --abbrev-ref HEAD') {
+        return { stdout: 'main\n', stderr: '' };
+      }
+      if (command === 'git rev-parse --verify feature/test') {
+        return { stdout: 'abc123\n', stderr: '' };
+      }
+      if (command === 'git status --porcelain') {
+        return { stdout: '?? .automaker/\n?? notes.txt\n', stderr: '' };
+      }
+      if (command === 'git checkout "feature/test"') {
+        return { stdout: '', stderr: '' };
+      }
+      return { stdout: '', stderr: '' };
+    });
+
+    const handler = createSwitchBranchHandler();
+    await handler(req, res);
+
+    expect(res.json).toHaveBeenCalledWith({
+      success: true,
+      result: {
+        previousBranch: 'main',
+        currentBranch: 'feature/test',
+        message: "Switched to branch 'feature/test'",
+      },
+    });
+    expect(mockExec).toHaveBeenCalledWith('git checkout "feature/test"', { cwd: '/repo/path' });
+  });
+
+  it('should block switching when tracked files are modified', async () => {
+    req.body = {
+      worktreePath: '/repo/path',
+      branchName: 'feature/test',
+    };
+
+    mockExec.mockImplementation(async (command: string) => {
+      if (command === 'git rev-parse --abbrev-ref HEAD') {
+        return { stdout: 'main\n', stderr: '' };
+      }
+      if (command === 'git rev-parse --verify feature/test') {
+        return { stdout: 'abc123\n', stderr: '' };
+      }
+      if (command === 'git status --porcelain') {
+        return { stdout: ' M src/index.ts\n?? notes.txt\n', stderr: '' };
+      }
+      if (command === 'git status --short') {
+        return { stdout: ' M src/index.ts\n?? notes.txt\n', stderr: '' };
+      }
+      return { stdout: '', stderr: '' };
+    });
+
+    const handler = createSwitchBranchHandler();
+    await handler(req, res);
+
+    expect(res.status).toHaveBeenCalledWith(400);
+    expect(res.json).toHaveBeenCalledWith({
+      success: false,
+      error:
+        'Cannot switch branches: you have uncommitted changes (M src/index.ts). Please commit your changes first.',
+      code: 'UNCOMMITTED_CHANGES',
+    });
+  });
+});
diff --git a/apps/server/tests/unit/services/auto-mode-service.test.ts b/apps/server/tests/unit/services/auto-mode-service.test.ts
index 7f3f9af0..a8489033 100644
--- a/apps/server/tests/unit/services/auto-mode-service.test.ts
+++ b/apps/server/tests/unit/services/auto-mode-service.test.ts
@@ -1,6 +1,9 @@
 import { describe, it, expect, vi, beforeEach } from 'vitest';
 import { AutoModeService } from '@/services/auto-mode-service.js';
 import type { Feature } from '@automaker/types';
+import fs from 'fs/promises';
+import os from 'os';
+import path from 'path';
 
 describe('auto-mode-service.ts', () => {
   let service: AutoModeService;
@@ -842,4 +845,76 @@ describe('auto-mode-service.ts', () => {
       expect(service.isFeatureRunning('feature-3')).toBe(false);
     });
   });
+
+  describe('interrupted recovery', () => {
+    async function createFeatureFixture(
+      projectPath: string,
+      feature: Partial<Feature> & Pick<Feature, 'id'>
+    ): Promise<string> {
+      const featureDir = path.join(projectPath, '.automaker', 'features', feature.id);
+      await fs.mkdir(featureDir, { recursive: true });
+      await fs.writeFile(
+        path.join(featureDir, 'feature.json'),
+        JSON.stringify(
+          {
+            title: 'Feature',
+            description: 'Feature description',
+            category: 'implementation',
+            status: 'backlog',
+            ...feature,
+          },
+          null,
+          2
+        )
+      );
+      return featureDir;
+    }
+
+    it('should resume features marked as interrupted after restart', async () => {
+      const projectPath = await fs.mkdtemp(path.join(os.tmpdir(), 'automaker-resume-'));
+      try {
+        const featureDir = await createFeatureFixture(projectPath, {
+          id: 'feature-interrupted',
+          status: 'interrupted',
+        });
+        await fs.writeFile(path.join(featureDir, 'agent-output.md'), 'partial progress');
+        await createFeatureFixture(projectPath, {
+          id: 'feature-complete',
+          status: 'completed',
+        });
+
+        const resumeFeatureMock = vi.fn().mockResolvedValue(undefined);
+        (service as any).resumeFeature = resumeFeatureMock;
+
+        await (service as any).resumeInterruptedFeatures(projectPath);
+
+        expect(resumeFeatureMock).toHaveBeenCalledTimes(1);
+        expect(resumeFeatureMock).toHaveBeenCalledWith(projectPath, 'feature-interrupted', true);
+      } finally {
+        await fs.rm(projectPath, { recursive: true, force: true });
+      }
+    });
+
+    it('should include interrupted features in pending recovery candidates', async () => {
+      const projectPath = await fs.mkdtemp(path.join(os.tmpdir(), 'automaker-pending-'));
+      try {
+        await createFeatureFixture(projectPath, {
+          id: 'feature-interrupted',
+          status: 'interrupted',
+        });
+        await createFeatureFixture(projectPath, {
+          id: 'feature-waiting-approval',
+          status: 'waiting_approval',
+        });
+
+        const pendingFeatures = await (service as any).loadPendingFeatures(projectPath, null);
+        const pendingIds = pendingFeatures.map((feature: Feature) => feature.id);
+
+        expect(pendingIds).toContain('feature-interrupted');
+        expect(pendingIds).not.toContain('feature-waiting-approval');
+      } finally {
+        await fs.rm(projectPath, { recursive: true, force: true });
+      }
+    });
+  });
 });