fix: resolve review findings (P1/P2/P3)

P1: Remove unused injects and functions
- Remove unused appOpenPromptPreview inject from ContextSystemWorkspace
- Remove unused appOpenPromptPreview inject from ContextUserWorkspace
- Remove unused handleOpenToolManager/handleOpenVariableManager from ContextUserWorkspace

P2: Fix saveToGlobal bypassing persistence
- Use variableManager.addVariable() instead of direct customVariables.value assignment
- This ensures proper validation and saveToStorage() is called

P3: Fix trailing whitespace in docs
- Remove trailing whitespace from replicate.md
- Remove trailing whitespace from style-learn.md

mkdocs/docs/en/auxiliary/replicate.md

@@ -59,8 +59,8 @@ After analysis, it generates:
 Reference image: A cyberpunk-style city night scene
 
 Generated prompt:
-A futuristic city night scene, neon lights闪烁, towering buildings, 
-rain-soaked streets reflecting colorful lights, cyberpunk style, 
+A futuristic city night scene, neon lights闪烁, towering buildings,
+rain-soaked streets reflecting colorful lights, cyberpunk style,
 high contrast, purple and blue as main colors
 
 Extracted variables:
@@ -76,8 +76,8 @@ Extracted variables:
 Reference image: A portrait using golden ratio composition
 
 Generated prompt:
-A portrait of a young woman, using golden ratio composition, 
-soft natural light, shallow depth of field, warm tones, 
+A portrait of a young woman, using golden ratio composition,
+soft natural light, shallow depth of field, warm tones,
 photography style
 
 Extracted variables:

mkdocs/docs/en/auxiliary/style-learn.md

@@ -74,7 +74,7 @@ An orange cat sitting on a windowsill, sunlight shining on it
 Reference image: A warm-toned, soft-lighting photography work
 
 Generated stylized prompt:
-An orange cat sitting on a windowsill, sunlight shining on it, 
+An orange cat sitting on a windowsill, sunlight shining on it,
 warm tones, soft light transitions, cozy atmosphere, photography style
 
 Extracted variables:
@@ -93,8 +93,8 @@ A snowy mountain with snow on the peak
 Reference image: A landscape photo shot from low angle, emphasizing foreground
 
 Generated stylized prompt:
-A snowy mountain with snow on the peak, low angle shot, 
-emphasizing foreground, vast视野, magnificent atmosphere, 
+A snowy mountain with snow on the peak, low angle shot,
+emphasizing foreground, vast视野, magnificent atmosphere,
 landscape photography style
 
 Extracted variables:
@@ -113,7 +113,7 @@ A samurai holding a long sword
 Reference image: An ukiyo-e style illustration
 
 Generated stylized prompt:
-A samurai holding a long sword, ukiyo-e style, flat processing, 
+A samurai holding a long sword, ukiyo-e style, flat processing,
 traditional Japanese colors, decorative lines, artistic illustration
 
 Extracted variables:

packages/ui/src/components/app-layout/PromptOptimizerApp.vue

@@ -1761,9 +1761,12 @@ provide("openVariableManager", (variableName?: string) => {
 
 // 提供 saveToGlobal 接口（供 Pro 工作区将临时变量保存到全局）
 provide("saveToGlobal", (name: string, value: string) => {
-    variableManager?.customVariables?.value
-        ? (variableManager.customVariables.value[name] = value)
-        : undefined;
+    try {
+        variableManager.addVariable(name, value);
+    } catch (error) {
+        console.error('[PromptOptimizerApp] Failed to save variable to global:', error);
+        throw error;
+    }
 });
 
 // 提供 openPromptPreview 接口（供 Pro 工作区打开提示词预览面板）

packages/ui/src/components/context-mode/ContextSystemWorkspace.vue

@@ -686,7 +686,6 @@ const appOpenToolManager = inject<(() => void) | null>('openToolManager', null)
 const appOpenVariableManager = inject<((variableName?: string) => void) | null>('openVariableManager', null)
 const appHandleSaveFavorite = inject<((data: SaveFavoritePayload) => void) | null>('handleSaveFavorite', null)
 const appSaveToGlobal = inject<((name: string, value: string) => void) | null>('saveToGlobal', null)
-const appOpenPromptPreview = inject<(() => void) | null>('openPromptPreview', null)
 
  // Pro Multi: message list is session-owned (per-submode isolation).
  // Keep emitting update:optimizationContext only as a backward-compat hook for non-App hosts.

packages/ui/src/components/context-mode/ContextUserWorkspace.vue

@@ -727,7 +727,6 @@ const appOpenToolManager = inject<(() => void) | null>('openToolManager', null)
 const appOpenVariableManager = inject<((variableName?: string) => void) | null>('openVariableManager', null)
 const appHandleSaveFavorite = inject<((data: SaveFavoritePayload) => void) | null>('handleSaveFavorite', null)
 const appSaveToGlobal = inject<((name: string, value: string) => void) | null>('saveToGlobal', null)
-const appOpenPromptPreview = inject<(() => void) | null>('openPromptPreview', null)
 
 const handleOpenModelManager = () => {
     if (appOpenModelManager) {
@@ -747,17 +746,6 @@ const handleOpenTemplateManager = (typeOrPayload?: string | Record<string, unkno
     emit('open-template-manager', type)
 }
 
-// Pro 工作区专有功能的处理函数（优先使用 inject，emit 作为兜底）
-const handleOpenToolManager = () => {
-    if (appOpenToolManager) { appOpenToolManager(); return; }
-    emit('open-tool-manager')
-}
-
-const handleOpenVariableManager = () => {
-    if (appOpenVariableManager) { appOpenVariableManager(); return; }
-    emit('open-variable-manager')
-}
-
 const handleSaveFavorite = (data: SaveFavoritePayload) => {
     if (appHandleSaveFavorite) { appHandleSaveFavorite(data); return; }
     emit('save-favorite', data)