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_mobile_touch_targets.py

@@ -0,0 +1,59 @@
+"""Mobile editor touch targets must be at least 44x44 CSS px.
+
+The mobile audit (2026-10-11) found 76 controls under 44px at 390px wide.
+These rules (mobile only, scoped under @media (max-width:700px)) raise the
+primary editor controls to a comfortable tap size without touching desktop.
+"""
+import pathlib
+
+ROOT = pathlib.Path(__file__).resolve().parents[1]
+CSS = (ROOT / "static" / "css" / "13-image-editor.css").read_text(encoding="utf-8")
+SW = (ROOT / "static" / "sw.js").read_text(encoding="utf-8")
+
+
+def test_tool_buttons_are_44px():
+    assert ".ge-toolbar .ge-tool-btn {" in CSS
+    i = CSS.index(".ge-toolbar .ge-tool-btn {")
+    block = CSS[i:i + 160]
+    assert "min-width: 44px;" in block
+    assert "min-height: 44px;" in block
+    assert "height: 44px;" in block
+
+
+def test_sheet_footer_buttons_are_44px():
+    # The 44px box is scoped to the in-sheet controls (layers footer, editor
+    # footer, panels overlay). Applying it to every editor button inflated the
+    # top menu row and clipped its labels, so the topbar keeps natural sizing.
+    for sel in (".ge-layers-footer .ge-btn,", ".ge-editor-footer .ge-btn,", ".ge-mobile-panels .ge-btn {"):
+        assert sel in CSS
+    i = CSS.index(".ge-layers-footer .ge-btn,")
+    block = CSS[i:i + 220]
+    assert "min-height: 44px;" in block
+    assert "min-width: 44px;" in block
+
+
+def test_layer_row_controls_are_44px():
+    assert ".ge-layer-vis,\n  .ge-layer-btn," in CSS or ".ge-layer-vis," in CSS
+    i = CSS.index(".ge-layer-vis,\n  .ge-layer-btn,") if ".ge-layer-vis,\n  .ge-layer-btn," in CSS else CSS.index(".ge-layer-vis,")
+    block = CSS[i:i + 260]
+    assert "width: 44px !important;" in block
+    assert "min-width: 44px !important;" in block
+    assert "height: 44px !important;" in block
+    # grid tracks resized to match
+    assert "grid-template-rows: 44px auto;" in CSS
+
+
+def test_all_new_rules_are_mobile_scoped():
+    # every 44px rule we rely on must sit inside a max-width:700px block
+    for marker in (".ge-layers-footer .ge-btn,", ".ge-layer-vis,", ".ge-toolbar .ge-tool-btn {"):
+        idx = CSS.rindex(marker)
+        head = CSS[:idx]
+        # the nearest preceding media query must be the mobile one
+        last_media = head.rfind("@media")
+        assert "@media (max-width: 700px)" in head[last_media:]
+
+
+def test_sw_cache_bumped():
+    # Version-agnostic: every commit bumps the SW cache.
+    import re
+    assert re.search(r"CACHE_NAME = 'odysseus-v\d+-pr40-editor-precache'", SW)