Update dashboard and automation colors to new module scheme

Dashboard widgets:
- WorkflowPipelineWidget: Sites now has transparent bg with colored icon
- Tasks stage uses navy (gray-700/800), Content/Drafts use blue (brand)
- AIOperationsWidget: Content now uses blue (brand) instead of green
- RecentActivityWidget: Content activity now uses blue (brand)
- QuickActionsWidget: Tasks step uses navy, Content uses blue

Automation components:
- AutomationPage STAGE_CONFIG: Tasks→Content now navy, Content→Prompts blue
- GlobalProgressBar: Updated stage colors to match new scheme
- CurrentProcessingCard: Stage colors match new module scheme

Color scheme:
- Planner Pipeline (Blue → Pink → Amber): Keywords, Clusters, Ideas
- Writer Pipeline (Navy → Blue → Pink → Green): Tasks, Content, Images, Published

frontend/src/components/dashboard/QuickActionsWidget.tsx

@@ -14,13 +14,15 @@ interface QuickActionsWidgetProps {
 }
 
 /**
- * Workflow steps with solid colored backgrounds matching Automation/Usage pages:
+ * Workflow steps with solid colored backgrounds for visual distinction:
+ * PLANNER PIPELINE (Blue → Pink → Amber):
  * - Keywords: brand/primary (blue)
- * - Clusters: purple  
+ * - Clusters: purple/pink  
  * - Ideas: warning/amber
- * - Tasks: brand/primary (blue)
- * - Content: success/green
- * - Images: purple
+ * WRITER PIPELINE (Navy → Blue → Pink → Amber → Green):
+ * - Tasks: gray-dark (navy) - entry point to Writer
+ * - Content: brand/primary (blue)
+ * - Images: purple/pink
  * - Review: warning/amber
  * - Publish: success/green
  */
@@ -58,8 +60,8 @@ const workflowSteps = [
     description: 'Convert approved ideas into content tasks',
     href: '/writer/tasks',
     actionLabel: 'Tasks',
-    gradient: 'from-brand-500 to-brand-600',
-    buttonTone: 'brand' as const,
+    gradient: 'from-gray-700 to-gray-800',
+    buttonTone: 'neutral' as const,
   },
   { 
     num: 5, 
@@ -67,8 +69,8 @@ const workflowSteps = [
     description: 'AI writes SEO-optimized articles from tasks',
     href: '/writer/content',
     actionLabel: 'Write',
-    gradient: 'from-success-500 to-success-600',
-    buttonTone: 'success' as const,
+    gradient: 'from-brand-500 to-brand-600',
+    buttonTone: 'brand' as const,
   },
   { 
     num: 6,