fix: use standard size-4 for blueprint action icons (#10992)

## Summary

Fix undersized delete and edit icons on user blueprint items in the node
library sidebar.

## Changes

- **What**: Changed blueprint action icons (trash, edit) from `size-3.5`
(14px) to `size-4` (16px), matching the standard icon size used across
the codebase.

## Review Focus

Trivial sizing fix — `size-4` is the codebase-wide convention for
iconify icons in buttons, and what the button base styles default SVGs
to.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-10992-fix-use-standard-size-4-for-blueprint-action-icons-33d6d73d365081be8c65f9e2a7b1d6ec)
by [Unito](https://www.unito.io)

AGENTS.md

@@ -318,6 +318,9 @@ When referencing Comfy-Org repos:
   - Find existing `!important` classes that are interfering with the styling and propose corrections of those instead.
 - NEVER use arbitrary percentage values like `w-[80%]` when a Tailwind fraction utility exists
   - Use `w-4/5` instead of `w-[80%]`, `w-1/2` instead of `w-[50%]`, etc.
+- NEVER use font-size classes (`text-xs`, `text-sm`, etc.) to size `icon-[...]` (iconify) icons
+  - Iconify icons size via `width`/`height: 1.2em`, so font-size produces unpredictable results
+  - Use `size-*` classes for explicit sizing, or set font-size on the **parent** container and let `1.2em` scale naturally
 
 ## Agent-only rules
 

src/components/common/TreeExplorerV2Node.vue

@@ -32,21 +32,14 @@
           :aria-label="$t('g.delete')"
           @click.stop="deleteBlueprint"
         >
-          <i class="icon-[lucide--trash-2] text-xs" />
+          <i class="icon-[lucide--trash-2]" />
         </button>
         <button
           :class="cn(ACTION_BTN_CLASS, 'text-muted-foreground')"
           :aria-label="$t('icon.bookmark')"
           @click.stop="toggleBookmark"
         >
-          <i
-            :class="
-              cn(
-                isBookmarked ? 'pi pi-bookmark-fill' : 'pi pi-bookmark',
-                'text-xs'
-              )
-            "
-          />
+          <i :class="isBookmarked ? 'pi pi-bookmark-fill' : 'pi pi-bookmark'" />
         </button>
       </div>
     </div>
@@ -115,7 +108,7 @@ const ROW_CLASS =
   'group/tree-node flex w-full min-w-0 cursor-pointer select-none items-center gap-3 overflow-hidden py-2 outline-none hover:bg-comfy-input rounded'
 
 const ACTION_BTN_CLASS =
-  'flex size-4 shrink-0 cursor-pointer items-center justify-center rounded-sm border-none bg-transparent opacity-0 group-hover/tree-node:opacity-100 hover:text-foreground'
+  'flex size-4 shrink-0 cursor-pointer items-center justify-center rounded-sm border-none bg-transparent text-sm opacity-0 group-hover/tree-node:opacity-100 hover:text-foreground'
 
 const { item } = defineProps<{
   item: FlattenedItem<RenderedTreeExplorerNode<ComfyNodeDefImpl>>

src/components/sidebar/tabs/nodeLibrary/NodeTreeLeaf.vue

@@ -25,7 +25,7 @@
           :aria-label="$t('g.delete')"
           @click.stop="deleteBlueprint"
         >
-          <i class="icon-[lucide--trash-2] size-3.5" />
+          <i class="icon-[lucide--trash-2] size-4" />
         </Button>
         <Button
           variant="muted-textonly"
@@ -33,7 +33,7 @@
           :aria-label="$t('g.edit')"
           @click.stop="editBlueprint"
         >
-          <i class="icon-[lucide--square-pen] size-3.5" />
+          <i class="icon-[lucide--square-pen] size-4" />
         </Button>
       </template>
       <template v-else #actions>