diff --git a/app/common/service/stack/StackModeService.php b/app/common/service/stack/StackModeService.php
index e7918a1..e6d2582 100644
--- a/app/common/service/stack/StackModeService.php
+++ b/app/common/service/stack/StackModeService.php
@@ -3,7 +3,114 @@
 namespace app\common\service\stack;
 
 use base\common\service\stack\StackModeServiceBase;
+use RuntimeException;
 
 class StackModeService extends StackModeServiceBase
 {
+    public function getModePlan(string $mode): array
+    {
+        $mode = trim($mode);
+        if ($mode === '') {
+            throw new RuntimeException('模式不能为空');
+        }
+
+        $config = $this->loadConfig();
+        $modes = $config['modes'];
+        if (!isset($modes[$mode])) {
+            throw new RuntimeException("模式不存在：{$mode}");
+        }
+
+        $defaultMode = $config['default_mode'];
+        $managedFiles = $config['managed_files'];
+
+        $plan = [];
+        $skippedFiles = [];
+        foreach ($managedFiles as $relativePath) {
+            $modeSource = $this->resolveModeFile($mode, $relativePath);
+            if ($modeSource !== null) {
+                $plan[] = [
+                    'file' => $relativePath,
+                    'source_mode' => $mode,
+                    'source_path' => $modeSource,
+                ];
+                continue;
+            }
+
+            $defaultSource = $this->resolveModeFile($defaultMode, $relativePath);
+            if ($defaultSource !== null) {
+                $plan[] = [
+                    'file' => $relativePath,
+                    'source_mode' => $defaultMode,
+                    'source_path' => $defaultSource,
+                ];
+                continue;
+            }
+
+            // File not found in mode OR default - skip it (don't throw)
+            $skippedFiles[] = $relativePath;
+        }
+
+        return [
+            'mode' => $mode,
+            'default_mode' => $defaultMode,
+            'managed_files' => $managedFiles,
+            'plan' => $plan,
+            'skipped_files' => $skippedFiles,
+        ];
+    }
+
+    public function applyMode(string $mode, string $operator = 'system'): array
+    {
+        // Use our overridden getModePlan (skips missing files instead of throwing)
+        $result = parent::applyMode($mode, $operator);
+
+        $appliedFiles = $result['applied_files'] ?? [];
+        $backupId = $result['backup_id'] ?? '';
+
+        $config = $this->loadConfig();
+        $managedFiles = $config['managed_files'];
+
+        $deletedFiles = [];
+
+        foreach ($managedFiles as $relativePath) {
+            // Skip files already handled by parent
+            if (in_array($relativePath, $appliedFiles)) {
+                continue;
+            }
+
+            $targetPath = $this->toRootPath($relativePath);
+            if (!is_file($targetPath)) {
+                continue;
+            }
+
+            // This file was skipped by getModePlan (not in mode or default)
+            // Back it up before deleting
+            if ($backupId !== '') {
+                $backupDir = $this->joinPath($this->backupRoot, $backupId);
+                $backupFilesDir = $this->joinPath($backupDir, 'files');
+                $backupFilePath = $this->joinPath($backupFilesDir, $this->toSystemPath($relativePath));
+
+                $this->ensureDir(dirname($backupFilePath));
+                copy($targetPath, $backupFilePath);
+
+                // Update backup meta
+                $metaPath = $this->joinPath($backupDir, 'meta.json');
+                if (is_file($metaPath)) {
+                    $meta = $this->readJsonFile($metaPath);
+                    $meta['files'][] = [
+                        'file' => $relativePath,
+                        'existed' => true,
+                    ];
+                    $this->writeJsonFile($metaPath, $meta);
+                }
+
+                // Only delete if we successfully backed up
+                @unlink($targetPath);
+                $deletedFiles[] = $relativePath;
+            }
+        }
+
+        $result['deleted_files'] = $deletedFiles;
+        return $result;
+    }
 }