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_quick_edit_free_transform.py

@@ -0,0 +1,58 @@
+import re
+from pathlib import Path
+
+GALLERY = Path(__file__).resolve().parents[1] / "static" / "js" / "galleryEditor.js"
+DOC = Path(__file__).resolve().parents[1] / "docs" / "QUICKEDIT_COVERAGE.md"
+
+
+def _src():
+    return GALLERY.read_text(encoding="utf-8")
+
+
+def test_free_transform_block_routes_transform_start():
+    src = _src()
+    assert "// --- Edit ▸ Free Transform (deterministic) ---" in src
+    assert "if (/\\bfree[-\\s]*transform\\b/.test(p)" in src
+    assert "|| (/\\btransform\\b/.test(p) && /\\b(?:selection|selected|marquee)\\b/.test(p))) {" in src
+    assert "await _runQuickControlOp('transform.start', {});" in src
+    assert "'Started a free transform. Drag the handles, then press Enter.'" in src
+
+
+def test_free_transform_selection_branch():
+    src = _src()
+    assert "state.wandMask && typeof _startSelectionTransform === 'function'" in src
+    assert "_startSelectionTransform();" in src
+    assert "'Transforming the selection. Drag the handles, then press Enter.'" in src
+
+
+def test_free_transform_requires_explicit_phrase():
+    src = _src()
+    block = src[src.index("// --- Edit ▸ Free Transform (deterministic) ---"):]
+    block = block[:block.index("// --- Rasterize")]
+    # free-transform phrase OR transform + selection word; not a bare "transform"
+    assert "free[-\\s]*transform" in block
+    assert "selection|selected|marquee" in block
+
+
+def test_free_transform_ordering_before_rasterize():
+    src = _src()
+    i_rotate = src.index("// \"rotate/flip the whole image/canvas/photo\"")
+    i_transform = src.index("// --- Edit ▸ Free Transform (deterministic) ---")
+    i_raster = src.index("// --- Rasterize (Layer ▸ Rasterize) ---")
+    assert i_rotate < i_transform < i_raster
+
+
+def test_transform_control_ops_registered():
+    src = _src()
+    assert "'transform.start': { description: 'Begin a transform.'" in src
+    assert "'transform.apply': { description: 'Commit the active transform.'" in src
+    assert "'transform.cancel': { description: 'Cancel the active transform.'" in src
+    # _startSelectionTransform is the selection-content transform (from the session)
+    assert "_startSelectionTransform" in src
+
+
+def test_coverage_doc_has_free_transform_row():
+    doc = DOC.read_text(encoding="utf-8")
+    assert "Edit → Free Transform" in doc
+    assert "`transform.start`" in doc
+    assert re.search(r"Edit → Free Transform[^\n]*\|\s*OK\s*\|", doc)