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_reselect.py

@@ -0,0 +1,46 @@
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+EDITOR = ROOT / "static/js/galleryEditor.js"
+STATE = ROOT / "static/js/editor/state.js"
+
+
+def _selection_block(src):
+    start = src.index("// --- Selection commands (deterministic, no model call) ---")
+    return src[start:src.index("// --- Layer align", start) if "// --- Layer align" in src[start:] else start + 4000]
+
+
+def test_reselect_word_is_admitted_into_the_selection_block():
+    src = EDITOR.read_text(encoding="utf-8")
+    block = _selection_block(src)
+    # "reselect" is a single token, so \bselect\b never matched it before; the
+    # outer guard must admit it explicitly.
+    assert "if (/\\bselect\\b|\\bselection\\b|\\bdeselect\\b|\\binvert\\b|\\binverse\\b|\\breselect\\b/.test(p)) {" in block
+
+
+def test_reselect_branch_calls_the_helper_and_reports_status():
+    src = EDITOR.read_text(encoding="utf-8")
+    block = _selection_block(src)
+    assert "if (/\\breselect\\b|\\bbring\\s+back\\s+(?:the\\s+)?selection\\b|\\brestore\\s+(?:the\\s+)?selection\\b/.test(p)) {" in block
+    assert "if (_reselectSelection()) _setAiCommandStatus('Reselected the last selection.', 'done');" in block
+    assert "else _setAiCommandStatus('There is nothing to reselect yet.', '');" in block
+    assert "return;" in block
+
+
+def test_reselect_branch_precedes_select_all():
+    src = EDITOR.read_text(encoding="utf-8")
+    reselect = src.index("if (/\\breselect\\b|\\bbring\\s+back\\s+(?:the\\s+)?selection\\b")
+    select_all = src.index("if (/\\bselect\\s+(?:all|everything)\\b", reselect)
+    assert reselect < select_all
+
+
+def test_reselect_helper_and_last_selection_state_exist():
+    src = EDITOR.read_text(encoding="utf-8")
+    assert "function _reselectSelection() {" in src
+    assert "if (!state.lastSelection?.canvas) return false;" in src
+    assert "return _activateSelectionCanvas(state.lastSelection.canvas, 'reselect');" in src
+    # A dismissed selection is remembered; Reselect brings it back.
+    assert "state.lastSelection = { canvas: _cloneSelectionCanvas(selection) };" in src
+    state_src = STATE.read_text(encoding="utf-8")
+    assert "lastSelection: null," in state_src