style(desktop): gold→purple chrome on landed memory saves

Paint successful memory tool rows with a gradient title, tinted brain
glyph, and purple meta so a save reads prized rather than like a warning.

apps/desktop/src/components/assistant-ui/tool/fallback.tsx

@@ -214,11 +214,14 @@ function ToolGlyph({
   copy,
   filePath,
   icon,
+  legendary,
   status
 }: {
   copy: ToolStatusCopy
   filePath?: string
   icon?: string
+  /** Landed memory write — keep the brain glyph, tint it gold→purple. */
+  legendary?: boolean
   status?: ToolStatus
 }) {
   const node = status ? (
@@ -226,10 +229,16 @@ function ToolGlyph({
   ) : filePath ? (
     <FileTypeIcon className="text-(--ui-text-tertiary)" path={filePath} size="0.875rem" />
   ) : icon ? (
-    <ToolIcon className="text-(--ui-text-tertiary)" name={icon} size="0.875rem" />
+    <ToolIcon
+      className={legendary ? 'text-(--tool-memory-legendary-icon)' : 'text-(--ui-text-tertiary)'}
+      name={icon}
+      size="0.875rem"
+    />
   ) : null
 
-  return node ? <span className={TOOL_HEADER_GLYPH_WRAP_CLASS}>{node}</span> : null
+  return node ? (
+    <span className={cn(TOOL_HEADER_GLYPH_WRAP_CLASS, legendary && 'tool-memory-legendary-glyph')}>{node}</span>
+  ) : null
 }
 
 // Which status (if any) should pre-empt the tool's icon in the leading
@@ -275,11 +284,13 @@ function LinkifiedText({ className, text }: { className?: string; text: string }
 
 function ToolTitle({
   isPending,
+  legendary,
   status,
   title,
   titleAction
 }: {
   isPending: boolean
+  legendary?: boolean
   status: ToolStatus
   title: string
   titleAction?: ToolTitleAction
@@ -290,7 +301,8 @@ function ToolTitle({
         SCAFFOLD_LABEL_CLASS,
         isPending && 'text-(--conversation-scaffold-meta)',
         status === 'error' && 'text-destructive',
-        status === 'warning' && 'text-amber-700 dark:text-amber-300'
+        status === 'warning' && 'text-amber-700 dark:text-amber-300',
+        legendary && !isPending && 'tool-memory-legendary-title text-transparent'
       )}
     >
       {isPending && titleAction ? (
@@ -466,6 +478,10 @@ function ToolEntry({ part }: ToolEntryProps) {
 
   const showDiffStats = !isPending && Boolean(diffStats && (diffStats.added > 0 || diffStats.removed > 0))
 
+  // Landed memory write gets gold→purple chrome instead of the plain scaffold grey.
+  const memoryLegendary = !isPending && part.toolName === 'memory' && view.status === 'success'
+  const memoryMetaClass = memoryLegendary ? 'tool-memory-legendary-meta' : undefined
+
   // The header trailing slot only carries the live duration timer while the
   // tool is running. The copy control used to live here too, but an
   // `opacity-0` (yet still clickable) button straddling the caret/duration made
@@ -542,10 +558,19 @@ function ToolEntry({ part }: ToolEntryProps) {
               copy={copy}
               filePath={isFileEdit ? view.subtitle : undefined}
               icon={view.icon}
+              legendary={memoryLegendary}
               status={leadingStatus(isPending, view.status)}
             />
-            <ToolTitle isPending={isPending} status={view.status} title={view.title} titleAction={view.titleAction} />
-            {!isPending && view.countLabel && <span className={SCAFFOLD_META_CLASS}>{view.countLabel}</span>}
+            <ToolTitle
+              isPending={isPending}
+              legendary={memoryLegendary}
+              status={view.status}
+              title={view.title}
+              titleAction={view.titleAction}
+            />
+            {!isPending && view.countLabel && (
+              <span className={cn(SCAFFOLD_META_CLASS, memoryMetaClass)}>{view.countLabel}</span>
+            )}
             {showDiffStats && diffStats && (
               <span className="flex shrink-0 items-center gap-1 font-mono text-[0.625rem] tabular-nums">
                 {diffStats.added > 0 && (
@@ -557,7 +582,7 @@ function ToolEntry({ part }: ToolEntryProps) {
               </span>
             )}
             {!isFileEdit && !isPending && view.durationLabel && (
-              <span className={SCAFFOLD_META_CLASS}>{view.durationLabel}</span>
+              <span className={cn(SCAFFOLD_META_CLASS, memoryMetaClass)}>{view.durationLabel}</span>
             )}
           </span>
         </DisclosureRow>

apps/desktop/src/styles.css

@@ -188,6 +188,13 @@
     --context-usage-subagents: color-mix(in srgb, var(--ui-blue) 70%, var(--ui-cyan));
     --context-usage-memory: color-mix(in srgb, var(--ui-orange) 80%, var(--ui-yellow));
     --context-usage-conversation: var(--ui-cyan);
+    /* Landed memory-write tool row — gold → purple, never amber warning. */
+    --tool-memory-legendary-from: color-mix(in srgb, var(--ui-yellow) 72%, #f5d08a);
+    --tool-memory-legendary-mid: color-mix(in srgb, var(--ui-orange) 55%, var(--ui-purple));
+    --tool-memory-legendary-to: color-mix(in srgb, var(--ui-purple) 82%, #c4b5fd);
+    --tool-memory-legendary-icon: color-mix(in srgb, var(--ui-yellow) 55%, var(--ui-purple));
+    --tool-memory-legendary-meta: color-mix(in srgb, var(--ui-purple) 58%, var(--ui-text-tertiary));
+    --tool-memory-legendary-glow: color-mix(in srgb, var(--ui-purple) 38%, transparent);
     /* Diff add/remove, derived from the semantic palette so every diff surface
        (tool cards, preview, review pane) tracks the theme's green/red. Only the
        foregrounds need a dark override — they mix toward the page instead of
@@ -738,6 +745,29 @@
   }
 }
 
+/* Landed `memory` tool row — gold → purple on the brain glyph + title.
+   Pair with `text-transparent` so the scaffold label color can't win. */
+.tool-memory-legendary-title {
+  background-image: linear-gradient(
+    105deg,
+    var(--tool-memory-legendary-from) 0%,
+    var(--tool-memory-legendary-mid) 48%,
+    var(--tool-memory-legendary-to) 100%
+  );
+  -webkit-background-clip: text;
+  background-clip: text;
+  color: transparent !important;
+  font-weight: 600;
+}
+
+.tool-memory-legendary-glyph {
+  filter: drop-shadow(0 0 0.28rem var(--tool-memory-legendary-glow));
+}
+
+.tool-memory-legendary-meta {
+  color: var(--tool-memory-legendary-meta);
+}
+
 .quest-glow {
   animation: quest-glow 1.8s ease-in-out infinite;
 }