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_panel_titles_and_adjustments.py

@@ -0,0 +1,59 @@
+import re
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+CSS = (ROOT / "static" / "css" / "13-image-editor.css").read_text()
+STUDIO = (ROOT / "static" / "js" / "editor" / "panels" / "studio-panels.js").read_text()
+PANELS_JS = (ROOT / "static" / "js" / "editor" / "panels" / "panels.js").read_text()
+GE = (ROOT / "static" / "js" / "galleryEditor.js").read_text()
+SW = (ROOT / "static" / "sw.js").read_text()
+
+PANELS = ["swatches", "gradients", "patterns", "adjustments", "properties", "histogram"]
+
+
+def test_inner_panel_titles_hidden():
+    for pid in PANELS:
+        assert f"#ge-panel-{pid} > .ge-panel-title" in CSS, pid
+    assert "display: none;" in CSS
+
+
+def test_panel_titles_removed_at_creation():
+    # The title node is not created at all (not merely hidden) for these panels.
+    for src in (PANELS_JS, STUDIO):
+        assert "if (title) wrap.appendChild(el('div', 'ge-panel-title', title));" in src
+    for pid in ("swatches", "gradients", "histogram"):
+        assert f"panel('{pid}', ''," in PANELS_JS, pid
+    for pid in ("properties", "patterns", "adjustments"):
+        assert f"panel('{pid}', ''," in STUDIO, pid
+
+
+def test_swatch_chips_are_round():
+    assert ".ge-mini-swatch," in CSS
+    assert ".ge-swatch-grid .ge-swatch," in CSS
+    assert ".ge-swatch-body .ge-color-input.cp-swatch-input {" in CSS
+    assert "border-radius: 50%;" in CSS
+    assert ".ge-gradient-swatch { border-radius: 999px; }" in CSS
+
+
+def test_adjustment_buttons_have_svg_icons():
+    assert "const ADJUSTMENT_ICONS = Object.freeze({" in STUDIO
+    assert "function adjIcon(type)" in STUDIO
+    assert "<svg viewBox=\"0 0 16 16\"" in STUDIO
+    assert "`${adjIcon(type)}<span class=\"ge-adj-label\">${label}</span>`" in STUDIO
+    assert ".ge-adj-icon svg {" in CSS
+
+
+def test_add_adjustment_does_not_self_trigger():
+    # The old handler clicked #ge-add-layer then re-clicked the matching
+    # [data-adjustment-type] node, which was the grid button itself -> an
+    # unbounded loop that stacked adjustment layers.
+    assert 'document.getElementById(\'ge-add-layer\')?.click();' not in GE
+    assert 'document.querySelector(`[data-adjustment-type="${type}"]`)?.click();' not in GE
+    assert "_addAdjustmentLayer(type, anchor || document.getElementById('ge-add-fx'));" in GE
+
+
+def test_sw_cache_bumped():
+    # Version-agnostic: every commit bumps the SW cache, so pinning the exact
+    # number makes this test fail on the next commit.
+    m = re.search(r"CACHE_NAME = 'odysseus-v\d+-pr40-editor-precache'", SW)
+    assert m