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_command_palette_js.py

@@ -0,0 +1,43 @@
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def read(rel):
+    return (ROOT / rel).read_text(encoding="utf-8")
+
+
+def test_command_palette_module_shape():
+    src = read("static/js/editor/build/command-palette.js")
+    assert "export function createCommandPalette(" in src
+    for token in [
+        "ge-command-palette",
+        "ge-command-panel",
+        "ge-command-input",
+        "ge-command-list",
+        "ge-command-item",
+        "ge-command-empty",
+        "role",
+        "aria-modal",
+    ]:
+        assert token in src, token
+
+
+def test_gallery_wires_command_palette():
+    src = read("static/js/galleryEditor.js")
+    assert "import { createCommandPalette } from './editor/build/command-palette.js';" in src
+    assert "createCommandPalette(" in src
+    assert "commandPalette.toggle()" in src
+    assert "state.editorOpen" in src
+    assert "'k'" in src
+
+
+def test_command_palette_css_present():
+    src = read("static/css/13-image-editor.css")
+    for token in [".ge-command-palette", ".ge-command-panel", ".ge-command-item.active", ".ge-command-empty"]:
+        assert token in src, token
+
+
+def test_command_palette_is_precached():
+    src = read("static/sw.js")
+    assert "/static/js/editor/build/command-palette.js" in src