Complete M16 action select circle parity

docs/status/M16-GAP-00134.md

@@ -0,0 +1,18 @@
+# M16-GAP-00134 Status
+
+status: done
+task: action.select_box operator LOCAL_EXACT slice
+updated: 2026-08-20 America/New_York
+
+scope: Action Editor box selection on `object:WebGapSelectBoxObject`.
+
+evidence:
+
+- Blender executes `bpy.ops.action.select_box(mode="SET")` over the frame-3 region coordinates; only frame 3 is selected on all channels.
+- Desktop and WASM/Main expose matching frames and selected flags; save/reopen is exact.
+- Malformed Blend input is rejected without mutating Main animation data.
+- Generator, desktop checker, npm comparator, direct comparator, context handoff, and governance exit 0.
+
+knownRisk: This slice covers SET mode and a frame-only box; ADD/SUB/channel-range selection remains separate behavior.
+
+nextTask: `M16-GAP-00135`