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_dock_js.py

@@ -0,0 +1,105 @@
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+DOCK = ROOT / "static/js/editor/build/dock.js"
+RIGHT_PANEL = ROOT / "static/js/editor/build/right-panel.js"
+GALLERY = ROOT / "static/js/galleryEditor.js"
+CSS = ROOT / "static/css/13-image-editor.css"
+SW = ROOT / "static/sw.js"
+
+
+def test_dock_module_shape():
+    src = DOCK.read_text(encoding="utf-8")
+    assert "export function buildDock" in src
+    assert "ge-dock-tabbar" in src
+    assert "ge-dock-panels" in src
+    assert "ge-dock-panel" in src
+    # A compact selector, not a wrapping tab strip that ellipsises.
+    assert "ge-dock-select" in src
+    assert "createElement('select')" in src
+    # Entries may be grouped under Photoshop-style <optgroup> headers.
+    assert "createElement('optgroup')" in src
+    assert "optgroup.label = group" in src
+    # Switching only toggles `hidden`; elements are re-parented, never cloned.
+    assert "panel.appendChild(element)" in src
+    assert "localStorage" in src
+
+
+def test_right_panel_mounts_dock_on_desktop():
+    src = RIGHT_PANEL.read_text(encoding="utf-8")
+    assert "import { buildDock } from './dock.js';" in src
+    assert "const useDock = window.innerWidth > 700;" in src
+    assert "buildDock({" in src
+    # Tool Options moved out of the dock into the options bar, so the dock
+    # is reserved for Color / Adjustments / Panels; the controls panel is
+    # still built here and returned for the caller to mount.
+    assert "id: 'options', label: 'Tool Options'" not in src
+    assert "controlsHTML" in src
+    # Layers is pinned below the dock (always visible), not a tab.
+    assert "rightPanel.appendChild(layerPanel);" in src
+    assert "id: 'layers', label: 'Layers'" not in src
+    # Mobile path must stay intact (no dock).
+    assert "if (!useDock) rightPanel.appendChild(controls);" in src
+    assert "if (!useDock) rightPanel.appendChild(layerPanel);" in src
+
+
+def test_gallery_switches_dock_to_options_on_tool_select():
+    src = GALLERY.read_text(encoding="utf-8")
+    assert "layerPanel, dock } = buildRightPanel({" in src
+    # Tool Options moved to the options bar, so selecting the move/transform
+    # tools reveals the Properties group (where X/Y/W/H now live) instead.
+    assert "if (dock && (toolId === 'move' || toolId === 'transform')) dock.show('properties');" in src
+
+
+def test_gallery_registers_each_dock_panel_once():
+    # A duplicated entry produced a duplicate tab and an always-visible
+    # empty panel wrapper (the bug this redesign fixes).
+    src = GALLERY.read_text(encoding="utf-8")
+    assert src.count("id: 'actions', label: 'Actions'") == 1
+
+
+def test_dock_css_present():
+    css = CSS.read_text(encoding="utf-8")
+    for token in (
+        ".ge-right-panel--dock",
+        ".ge-dock-tabbar",
+        ".ge-dock-select",
+        ".ge-dock-panels",
+        ".ge-dock-panel[hidden]",
+        # Photoshop-style stacked panel groups.
+        ".ge-dock-group",
+        ".ge-dock-tabs",
+        ".ge-dock-tab",
+        ".ge-dock-collapse",
+        ".ge-dock-divider",
+        ".ge-dock-group.is-collapsed",
+        ".ge-dock--compact",
+    ):
+        assert token in css, token
+
+
+def test_status_bar_and_swatch_markup():
+    topbar = (ROOT / "static/js/editor/build/topbar.js").read_text(encoding="utf-8")
+    assert "ge-status-tool" in topbar
+    toolbar = (ROOT / "static/js/editor/build/toolbar.js").read_text(encoding="utf-8")
+    for token in ("ge-tool-swatches", "ge-swatch-fg", "ge-swatch-bg", "ge-swap-colors",
+                  "id=\"ge-fg-color\"", "id=\"ge-bg-color\""):
+        assert token in toolbar, token
+
+
+def test_3d_and_plugins_stubs_are_disabled():
+    topbar = (ROOT / "static/js/editor/build/topbar.js").read_text(encoding="utf-8")
+    # Every 3D and Plugins item must be greyed out, not fire a toast.
+    import re
+    for action in ("from-file", "from-layer", "render", "print", "about"):
+        m = re.search(r'data-3d-action="%s"[^>]*>' % re.escape(action), topbar)
+        assert m and "disabled" in m.group(0), action
+    for action in ("browse", "manage", "script"):
+        m = re.search(r'data-plugins-action="%s"[^>]*>' % re.escape(action), topbar)
+        assert m and "disabled" in m.group(0), action
+
+
+def test_dock_module_is_precached():
+    sw = SW.read_text(encoding="utf-8")
+    assert "'/static/js/editor/build/dock.js'" in sw