Reverts the 8 test files whose new coverage required rewriting
existing mock scaffolding, keeping this PR purely additive (no
deleted lines except formatting). Rework lands separately in #13411
so it can be reviewed on its own.
## Summary
Rename `imagePreviewStore.ts` → `nodeOutputStore.ts` to match the store
it houses (`useNodeOutputStore`, Pinia ID `nodeOutput`).
## Changes
- **What**: Rename file + test file, update all 21 import paths, mock
paths, and describe labels
- **Breaking**: None — exported symbol (`useNodeOutputStore`) and Pinia
store ID (`nodeOutput`) are unchanged
## Custom Node Ecosystem Audit
Searched the ComfyUI custom node ecosystem for `imagePreviewStore` and
`useNodeOutputStore`:
- **Not part of the public API** — neither filename nor export appear in
`comfyui_frontend_package` or `vite.types.config.mts`
- **1 external repo found:** `wallen0322/ComfyUI-AE-Animation` —
contains a full fork of the frontend source tree; it copies the file
internally and does not import from the published package. **No
breakage.**
- **No custom nodes import this store via the extension API.** This is a
safe internal-only rename.
## Review Focus
Pure mechanical rename — no logic changes. Verify no stale
`imagePreviewStore` references remain.
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9416-refactor-rename-imagePreviewStore-to-nodeOutputStore-31a6d73d3650816086c5e62959861ddb)
by [Unito](https://www.unito.io)
Co-authored-by: Alexander Brown <drjkl@comfy.org>
## Summary
Fix "Add Subgraph to Library" context menu option which was bookmarking
(UI favorite) instead of actually saving the subgraph as a reusable
blueprint.
## Changes
- **What**: Replace `nodeBookmarkStore.addBookmark()` with
`subgraphStore.publishSubgraph()` in `addSubgraphToLibrary`, matching
the working toolbar button behavior. Hide the menu option when multiple
items are selected since `publishSubgraph` requires exactly one
SubgraphNode.
## Review Focus
The original implementation (PR #5218) used `addBookmark` which only
adds a star/favorite — it never called the `publishSubgraph` function
that serializes, prompts for a name, and saves the subgraph as a
blueprint file. The toolbar button (`SaveToSubgraphLibrary.vue`) worked
correctly because it calls the `Comfy.PublishSubgraph` command which
uses `publishSubgraph`.
The multi-select visibility guard (`!hasMultipleSelection`) matches
`SaveToSubgraphLibrary.vue`'s `v-show` guard. "Unpack Subgraph" remains
visible for multi-select since it handles multiple SubgraphNodes
correctly.
Fixes COM-15200
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9056-fix-Add-Subgraph-to-Library-context-menu-not-saving-subgraph-30e6d73d36508177ba7ef97a2fe9b893)
by [Unito](https://www.unito.io)
