feat(photo-editor): Ajax Image Editor client (Photoshop-parity tools)

Photoshop-parity editor client: layers, selection/masking, brushes,
smart filters, LUT import, Quick Edit, mobile gestures, workspaces,
batch operations, and the service-worker versioning (v978->v1006).

Source: vendor/photocraft (ad1cff44) photo-editor client files, merged
onto upstream/dev (a8c147b2). Conflict resolution documented in
pr_work/A_conflicts.md; editor files taken from vendor/photocraft
(upstream's editor is an earlier snapshot of the same feature).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_editor_window_workspace_submenu.py

@@ -0,0 +1,55 @@
+"""Window > Workspace submenu: a nested flyout with 4 window setups.
+
+The Window dropdown used to list the 4 workspace presets as flat rows. They are
+now a `.ge-menu-parent` flyout ("Workspace") whose 4 children set up the editor
+windows (dock panels + tab + right-panel width). The submenu open/close toggle
+is the shared `wireSubmenuToggles` helper (also used by Image/Filter/Selection).
+"""
+
+from pathlib import Path
+import re
+
+ROOT = Path(__file__).resolve().parents[1]
+TOPBAR = (ROOT / "static/js/editor/build/topbar.js").read_text(encoding="utf-8")
+CSS = (ROOT / "static/css/13-image-editor.css").read_text(encoding="utf-8")
+WIRE = (ROOT / "static/js/editor/wire-extra-menus.js").read_text(encoding="utf-8")
+MENUS = (ROOT / "static/js/editor/wire-topbar-menus.js").read_text(encoding="utf-8")
+SUBMENU = (ROOT / "static/js/editor/submenu-toggles.js").read_text(encoding="utf-8")
+WORKSPACES = (ROOT / "static/js/editor/workspaces.js").read_text(encoding="utf-8")
+GALLERY = (ROOT / "static/js/galleryEditor.js").read_text(encoding="utf-8")
+SW = (ROOT / "static/sw.js").read_text(encoding="utf-8")
+
+
+def test_window_menu_has_a_workspace_flyout_parent():
+    assert 'class="dropdown-item-compact ge-menu-parent" data-submenu="window-workspace"' in TOPBAR
+    assert '<div class="ge-submenu" data-submenu-panel="window-workspace">' in TOPBAR
+    # the 4 variants still carry their window-action ids
+    for name in ("essentials", "photography", "painting", "graphic"):
+        assert f'data-window-action="workspace-{name}"' in TOPBAR
+
+
+def test_submenu_toggle_helper_is_shared():
+    assert "export function wireSubmenuToggles(menu) {" in SUBMENU
+    assert "import { wireSubmenuToggles } from './submenu-toggles.js';" in MENUS
+    assert "import { wireSubmenuToggles } from './submenu-toggles.js';" in WIRE
+    # the Window menu (wired in wire-extra-menus) gets the toggle
+    assert "wireSubmenuToggles(menu);" in WIRE
+    assert "wireSubmenuToggles(menu);" in MENUS
+
+
+def test_workspaces_set_up_the_windows():
+    # every preset declares the panels it shows
+    assert WORKSPACES.count("panels:") == 4
+    assert "setPanelVisible" in WORKSPACES
+    assert "PANEL_IDS" in WORKSPACES
+    # composer hands the panel-visibility setter into applyWorkspace
+    assert "setPanelVisible: (id, visible) => panelVisibility.setVisible(id, visible)" in GALLERY
+
+
+def test_workspace_flyout_releases_the_menu_clip():
+    assert ".ge-window-menu:has(.ge-menu-parent.open)" in CSS
+
+
+def test_submenu_helper_is_precached_and_cache_bumped():
+    assert "'/static/js/editor/submenu-toggles.js'" in SW
+    assert re.search(r"odysseus-v\d+-pr40-editor-precache", SW)