feat: add copy/paste automation data functionality

Implemented automation clipboard system:
- Added separate automationClipboard state for automation points
- Created handleCopyAutomation function to copy automation lane points
- Created handlePasteAutomation function to paste at current time with time offset
- Added Copy and Clipboard icon buttons to AutomationHeader component
- Automation points preserve curve type and value when copied/pasted
- Points are sorted by time after pasting
- Toast notifications for user feedback
- Ready for integration when automation lanes are actively used

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

components/automation/AutomationHeader.tsx

@@ -1,7 +1,7 @@
 'use client';
 
 import * as React from 'react';
-import { Eye, EyeOff, ChevronDown, ChevronUp } from 'lucide-react';
+import { Eye, EyeOff, ChevronDown, ChevronUp, Copy, Clipboard } from 'lucide-react';
 import { Button } from '@/components/ui/Button';
 import { cn } from '@/lib/utils/cn';
 import type { AutomationMode } from '@/types/automation';
@@ -21,6 +21,9 @@ export interface AutomationHeaderProps {
   availableParameters?: Array<{ id: string; name: string }>;
   selectedParameterId?: string;
   onParameterChange?: (parameterId: string) => void;
+  // Copy/Paste automation
+  onCopyAutomation?: () => void;
+  onPasteAutomation?: () => void;
 }
 
 const MODE_LABELS: Record<AutomationMode, string> = {
@@ -51,6 +54,8 @@ export function AutomationHeader({
   availableParameters,
   selectedParameterId,
   onParameterChange,
+  onCopyAutomation,
+  onPasteAutomation,
 }: AutomationHeaderProps) {
   const modes: AutomationMode[] = ['read', 'write', 'touch', 'latch'];
   const currentModeIndex = modes.indexOf(mode);
@@ -145,6 +150,34 @@ export function AutomationHeader({
         </div>
       )}
 
+      {/* Copy/Paste automation controls */}
+      {(onCopyAutomation || onPasteAutomation) && (
+        <div className="flex gap-1 flex-shrink-0 ml-auto mr-8">
+          {onCopyAutomation && (
+            <Button
+              variant="ghost"
+              size="icon-sm"
+              onClick={onCopyAutomation}
+              title="Copy automation data"
+              className="h-5 w-5"
+            >
+              <Copy className="h-3 w-3" />
+            </Button>
+          )}
+          {onPasteAutomation && (
+            <Button
+              variant="ghost"
+              size="icon-sm"
+              onClick={onPasteAutomation}
+              title="Paste automation data"
+              className="h-5 w-5"
+            >
+              <Clipboard className="h-3 w-3" />
+            </Button>
+          )}
+        </div>
+      )}
+
       {/* Show/hide toggle - Positioned absolutely on the right */}
       <Button
         variant="ghost"