style(collab): right-align lock badge without shifting lines and highlight locked block with grey background

frontend/src/features/workspace/OutlinerBlock.tsx

@@ -455,24 +455,40 @@ export const OutlinerBlock: React.FC<OutlinerBlockProps> = ({
 
   return (
     <div
-      className={`group relative flex items-start gap-1 py-1 rounded-card transition-all duration-300 ${
+      className={`group relative flex items-start gap-1 py-1 px-1.5 rounded-card transition-all duration-300 ${
         isDragTarget
           ? 'border-t-2 border-accent bg-accent/10'
           : isTargeted
           ? 'bg-accent/15 ring-2 ring-accent'
+          : isLockedByOther
+          ? 'bg-panel-elevated/80 border border-border/60 shadow-xs'
           : isFocused
           ? 'bg-panel-elevated'
           : 'hover:bg-panel'
       }`}
       style={{
         paddingLeft: `${visualLevel * 22 + 4}px`,
-        ...(primaryRemoteCursor
+        ...(isLockedByOther && lockedByColor
+          ? { borderLeft: `3px solid ${lockedByColor}` }
+          : primaryRemoteCursor
           ? { borderLeft: `2px solid ${primaryRemoteCursor.userColor}` }
           : {}),
       }}
       onDragOver={(e) => onDragOverBlock?.(e, index)}
       onDrop={() => onDropBlock?.(index)}
     >
+      {/* Right-aligned Lock Indicator (Zero vertical height impact, keeps bullet & line aligned) */}
+      {isLockedByOther && (
+        <div
+          className="absolute right-2 top-1.5 z-10 flex items-center gap-1 px-2 py-0.5 rounded-pill text-[10px] font-semibold text-white shadow-xs select-none pointer-events-none"
+          style={{ backgroundColor: lockedByColor || '#64748b' }}
+          title={`Wird gerade bearbeitet von ${lockedByName || 'anderer Nutzer'}`}
+        >
+          <Lock className="w-2.5 h-2.5 shrink-0" />
+          <span className="truncate max-w-[120px]">{lockedByName || 'Gesperrt'}</span>
+        </div>
+      )}
+
       {/* Remote Cursors Floating Name Badges on Block */}
       {activeRemoteCursors.length > 0 && (
         <div className="absolute -top-2.5 right-2 z-20 flex items-center gap-1 select-none pointer-events-none">
@@ -569,16 +585,6 @@ export const OutlinerBlock: React.FC<OutlinerBlockProps> = ({
 
       {/* Main Block Content */}
       <div className="flex-1 min-w-0 pr-1 relative">
-        {isLockedByOther && (
-          <div
-            className="inline-flex items-center gap-1 px-1.5 py-0.5 rounded text-[10px] font-semibold text-white shadow-xs mb-1 select-none"
-            style={{ backgroundColor: lockedByColor || '#f59e0b' }}
-            title={`Wird gerade bearbeitet von ${lockedByName || 'anderer Nutzer'}`}
-          >
-            <Lock className="w-2.5 h-2.5" />
-            <span>{lockedByName || 'Gesperrt'}</span>
-          </div>
-        )}
         {block.type === 'divider' ? (
           <div className="py-2">
             <hr className="border-t border-border" />
@@ -610,7 +616,9 @@ export const OutlinerBlock: React.FC<OutlinerBlockProps> = ({
               onSelect={handleSelect}
               onChange={handleContentChange}
               onKeyDown={handleKeyDown}
-              className="w-full resize-none font-mono text-xs bg-transparent text-status-ok border-0 focus:outline-none focus:ring-0 leading-relaxed"
+              className={`w-full resize-none font-mono text-xs bg-transparent text-status-ok border-0 focus:outline-none focus:ring-0 leading-relaxed ${
+                isLockedByOther ? 'pr-28 cursor-not-allowed opacity-90' : ''
+              }`}
             />
           </div>
         ) : block.type === 'callout' ? (
@@ -630,7 +638,9 @@ export const OutlinerBlock: React.FC<OutlinerBlockProps> = ({
               onSelect={handleSelect}
               onChange={handleContentChange}
               onKeyDown={handleKeyDown}
-              className="w-full resize-none bg-transparent text-sm text-main border-0 focus:outline-none focus:ring-0 leading-relaxed italic"
+              className={`w-full resize-none bg-transparent text-sm text-main border-0 focus:outline-none focus:ring-0 leading-relaxed italic ${
+                isLockedByOther ? 'pr-28 cursor-not-allowed opacity-90' : ''
+              }`}
             />
           </div>
         ) : (
@@ -656,6 +666,8 @@ export const OutlinerBlock: React.FC<OutlinerBlockProps> = ({
                   : ''
               }
               className={`w-full resize-none overflow-hidden bg-transparent border-0 focus:outline-none focus:ring-0 leading-relaxed whitespace-pre-wrap break-words ${
+                isLockedByOther ? 'pr-28 cursor-not-allowed opacity-90' : ''
+              } ${
                 block.type === 'h1'
                   ? 'text-lg font-bold text-main tracking-tight'
                   : block.type === 'h2'