Libraries panel: art and colours dragged in are added where they are dropped

Art dragged off the canvas and colours dragged in from elsewhere (swatches, another library's)
used to be added at the end of the ungrouped items, wherever they were dropped. They now land
as items dragged within the list do: on another item of their kind, just before or after it by
the pointer's half and in its group; on a group, into it; away from the items, ungrouped at the
end as before.

library.add takes group and before/after, placed as library.moveItem places an item (the
placement is shared). A library change that fails partway now leaves the library as it was.

docs/mcp.md

@@ -2053,10 +2053,13 @@ size and a PNG `thumbnail` in base64; colours with `name`, `hex` and `color`; st
 `library.setCurrent {library}` manage them; `library` is an id or a name, and without it the current library (the one
 the panel shows) is meant.
 
-`library.add {library?, kind, ids?, name?, color?, swatch?}` adds from the selection: `graphic` (a copy of the objects with the
-images, symbols, patterns, swatches, styles and brushes they use, as Copy takes them), `fillColor` / `strokeColor` (the
-first selected object's solid colour, else the default one, or `color`), `charStyle` / `paraStyle` (the selected
-text's attributes). An item the library already has is reported as `existing`. `library.use {library?, kind, item,
+`library.add {library?, kind, ids?, name?, color?, swatch?, group?, before? | after?}` adds from the selection:
+`graphic` (a copy of the objects with the images, symbols, patterns, swatches, styles and brushes they use, as Copy
+takes them), `fillColor` / `strokeColor` (the first selected object's solid colour, else the default one, or `color`),
+`charStyle` / `paraStyle` (the selected text's attributes). The new item goes into `group` (by default into none) and,
+with `before` or `after` (another item of its kind), just before or after that item, as `library.moveItem` places one;
+art and swatches dropped among the panel's items are added this way. An item the library already has is reported as
+`existing`, and stays where it is. `library.use {library?, kind, item,
 center?, to?}` uses one: a graphic is placed centred on `center` (pasted with its resources; a swatch name the document
 gives another colour merges into the document's), a colour paints the selection's fill or stroke, and a style is added
 to the document under its name without the white space around it (numbered when that name is taken by other

docs/target-app-parity.md

@@ -1,6 +1,6 @@
 # Parity with Adobe Illustrator
 
-> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-30 · **Change:** minor (Gradient panel presets done; Gradient stop popover: an eyedropper samples the stop's colour from the art (#4681); scores unchanged) · **Target:** Adobe Illustrator 2026 (30.x; public release notes through 30.7, August 2026)
+> **Last reviewed:** 2026-10-10 · **Last updated:** 2026-10-30 · **Change:** minor (Libraries panel: art dragged off the canvas and swatches dragged in are added where they are dropped; scores unchanged) · **Target:** Adobe Illustrator 2026 (30.x; public release notes through 30.7, August 2026)
 
 ## Feature submission evidence
 
@@ -404,7 +404,7 @@ about 1–1.5 agent-hours each, so the other rows (estimated on the older scale)
 | Automation | 3 | 65% | scripting surface, batch (MCP drops malformed app replies without replay; Variables: text/visibility variables bound to objects, an object may carry several, dataset rows applied in one undo step, panel and Window › Variables with dialogs; image/graph kinds and dataset import/export open) | 6–10 |
 | UI chrome (panels, contextual Properties, workspaces, prefs) | 6 | 80% | macOS native menu dismissal fixed (M14.8); Variables, Links, Asset Export, CSS Properties, Attributes, the canvas context menu and docking panels into any dock group by dragging (as tabs, a top/bottom split or icons) are done; remaining: SVG Interactivity, Properties per context, Consolidate All Windows, floating panels outside the app window, context menus beyond the canvas, about 13 Preferences options stored but not yet acted on (#394: Open Documents As Tabs, Real-time Drawing, hyphenation language, devices…) | 13–20 |
 | UI chrome (panels, contextual Properties, workspaces, prefs) | 6 | 80% | macOS native menu dismissal fixed (M14.8); Variables, Links, Asset Export, CSS Properties, Attributes, the canvas context menu and docking panels into any dock group by dragging (as tabs, a top/bottom split or icons) are done; remaining: SVG Interactivity, Properties per context, Consolidate All Windows, floating panels outside the app window, context menus beyond the canvas, about 14 Preferences options stored but not yet acted on (#394: Highlight Alternate Glyphs, Open Documents As Tabs, Real-time Drawing, hyphenation language, devices…) | 13–20 |
-| Libraries, Links, Package | 2 | 82% | the Libraries panel is local only (no cloud by design: libraries are files on this machine) and has no shared libraries, linked graphics or gradients and patterns as items yet; its graphics, colours and text styles (#745), its search, groups and library export/import as `.vclibrary` files (#926), a list that scrolls, with items and groups reordered by dragging and items dragged into and out of groups, and items shown as icons or in a list with their names, are done; Links and Package are done; placed VectorCraft documents are done (linked by default, vectors in every output, previews, Break Link, Expand, Edit Original, refresh on save) | 2–3 |
+| Libraries, Links, Package | 2 | 82% | the Libraries panel is local only (no cloud by design: libraries are files on this machine) and has no shared libraries, linked graphics or gradients and patterns as items yet; its graphics, colours and text styles (#745), its search, groups and library export/import as `.vclibrary` files (#926), a list that scrolls, with items and groups reordered by dragging and items dragged into and out of groups, art and swatches dragged in added where they are dropped, and items shown as icons or in a list with their names, are done; Links and Package are done; placed VectorCraft documents are done (linked by default, vectors in every output, previews, Break Link, Expand, Edit Original, refresh on save) | 2–3 |
 | **Feature parity** | **103** | **~75%** | | **~210–330** |
 | Interaction-fidelity pass (side by side with Illustrator: every tool modifier, cursor, dialog, Properties context) | | | | 60–90 |
 | Hardening (big-file corpus, fuzzing, cross-platform and browser QA, accessibility, packaging) | | | Bounded control socket waits (#1726); PngSuite pinned-file integrity and download budgets verified (#1729); RPM runtime capabilities and glibc floor checked (#1275); titled PDF exports ask viewers to display the document title (#3646); real-distro installation/start-up QA pending | 50–80 |
@@ -1283,6 +1283,7 @@ spot colours, carry a colour adjustment, or are RGB, CMYK or grayscale images
 | 2026-10-30 | minor | Selection, transform & align tools: Align panel menu › Align to Glyph Bounds › Point Text and Area Text align and distribute type by the ink of its glyphs (#4231); evidence added; score and hours unchanged (estimated). |
 | 2026-10-30 | minor | Blob Brush and Eraser Tool Options: Size follows the pen pressure, Fixed or Pressure with a Variation (#4590, #3961); scores and estimates unchanged |
 | 2026-10-30 | minor | Blob Brush Tool Options: Size follows the pen pressure, Fixed or Pressure with a Variation (#4590); scores and estimates unchanged |
+| 2026-10-29 | minor | Libraries panel: art dragged off the canvas and swatches dragged in (colours, also another library's, gradients and patterns) are added where they are dropped, as items dragged within the list move: on another item of their kind, just before or after it by the pointer's half and in its group; on a group, into it; away from the items, ungrouped at the end as before (`library.add` takes `group` and `before`/`after`). Tests: `tests::library::a_new_item_is_added_where_it_is_dropped`, `panels::libraries::tests::art_and_colours_dropped_from_elsewhere_go_where_they_are_dropped`; the library fuzz test adds with them. Scores and hours unchanged. |
 | 2026-10-29 | minor | Path operations: Pathfinder: live compound shapes (#4522): the panel menu's Make, Release and Expand Compound Shape, Alt-clicking a Shape Mode, a selected member's Shape Mode and the Expand button act; evidence added; score and hours unchanged (estimated). |
 | 2026-10-29 | minor | Object › Path › Smooth… with its slider and Auto-Smooth (#4115) added to the evidence; score and hours unchanged. |
 | 2026-10-26 | minor | File formats: EPS Save and Save As: an opened EPS saves back to its own path as EPS, keeping the chosen artboard's page frame and transparent margins and the complete editable VectorCraft document; Save's TIFF preview is capped at 1024 px (Export keeps 2048); partly read, preview-only or damaged-editing-data sources still need confirmation before they are overwritten; evidence added ([file-format-parity.md](file-format-parity.md#eps-save-and-source-protection)); writing Illustrator's editing data (#868) and the `.ai` structure issues stay in the missing items; score and hours unchanged (estimated) |