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_canvas_context_menu.py

@@ -0,0 +1,118 @@
+import json
+import subprocess
+import textwrap
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+MODULE = (ROOT / "static/js/editor/canvas-context-menu.js").as_uri()
+STATE = (ROOT / "static/js/editor/state.js").as_uri()
+
+
+def run_node(body: str):
+    result = subprocess.run(
+        ["node", "--input-type=module", "-e", textwrap.dedent(body)],
+        cwd=ROOT,
+        text=True,
+        capture_output=True,
+        check=True,
+    )
+    return json.loads(result.stdout)
+
+
+def labels(items):
+    out = []
+    for item in items:
+        if item.get("type") == "sep":
+            out.append("—")
+        else:
+            out.append(item["label"])
+    return out
+
+
+def menu_for(tool: str, selection: bool = False):
+    return run_node(
+        f"""
+        import {{ state }} from {json.dumps(STATE)};
+        import {{ buildCanvasMenuItems }} from {json.dumps(MODULE)};
+        state.editorOpen = true;
+        state.tool = {json.dumps(tool)};
+        state.wandMask = {json.dumps({"w": 1, "h": 1} if selection else None)};
+        state.brushPixel = false;
+        const items = buildCanvasMenuItems(state.tool);
+        const out = items.map((i) => ({{ type: i.type || 'item', label: i.label || '', disabled: !!i.disabled, hint: i.hint || '' }}));
+        console.log(JSON.stringify(out));
+        """
+    )
+
+
+def test_paint_tool_menu_has_brush_controls():
+    items = menu_for("brush")
+    ls = labels(items)
+    assert "Increase Brush Size" in ls
+    assert "Decrease Brush Size" in ls
+    assert "Brush Preset" in ls
+    assert "Pixel Brush" in ls
+    # Common edit actions are always available.
+    assert "Undo" in ls and "Redo" in ls
+    assert "Rotate 90° CW" in ls
+
+
+def test_pixel_brush_entry_is_checked_when_pixel_mode_active():
+    items = run_node(
+        f"""
+        import {{ state }} from {json.dumps(STATE)};
+        import {{ buildCanvasMenuItems }} from {json.dumps(MODULE)};
+        state.tool = 'brush';
+        state.brushPixel = true;
+        const items = buildCanvasMenuItems('brush');
+        const pixel = items.find((i) => i.label === 'Pixel Brush');
+        console.log(JSON.stringify({{ checked: !!pixel.checked }}));
+        """
+    )
+    assert items["checked"] is True
+
+
+def test_selection_tool_menu_has_selection_ops():
+    ls = labels(menu_for("marquee", selection=True))
+    assert "Select All" in ls
+    assert "Deselect" in ls
+    assert "Inverse Selection" in ls
+    assert "Feather…" in ls
+    assert "Expand" in ls
+    assert "Contract" in ls
+
+
+def test_selection_items_disabled_without_selection():
+    items = menu_for("brush", selection=False)
+    by_label = {i["label"]: i for i in items if i["type"] == "item"}
+    assert by_label["Cut"]["disabled"] is True
+    assert by_label["Copy"]["disabled"] is True
+    assert by_label["Paste"]["disabled"] is False
+
+
+def test_crop_and_transform_tools_have_context_actions():
+    crop = labels(menu_for("crop"))
+    assert "Apply Crop" in crop
+    assert "Cancel Crop" in crop
+    transform = labels(menu_for("transform"))
+    assert "Commit Transform" in transform
+    assert "Cancel Transform" in transform
+
+
+def test_context_menu_is_wired_into_canvas_events():
+    events = (ROOT / "static/js/editor/canvas-events.js").read_text()
+    assert "import { wireCanvasContextMenu } from './canvas-context-menu.js';" in events
+    assert "wireCanvasContextMenu(canvasArea, { signal });" in events
+    module = (ROOT / "static/js/editor/canvas-context-menu.js").read_text()
+    assert "export function buildCanvasMenuItems(" in module
+    assert "export function openCanvasContextMenu(" in module
+    assert "window.geEditorControl?.invoke(" in module
+    assert "canvas.addEventListener('contextmenu'" in module
+
+
+def test_context_menu_styles_exist():
+    css = (ROOT / "static/css/13-image-editor.css").read_text()
+    assert ".ge-canvas-menu {" in css
+    assert ".ge-canvas-menu-item" in css
+    assert ".ge-canvas-menu-sub" in css