Continue Blender Web parity task handoff

docs/status/M16-GAP-00248.md

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+# M16-GAP-00248 Status
+
+status: done
+task: armature.reveal operator LOCAL_EXACT slice
+updated: 2026-08-23 America/New_York
+
+scope:
+
+- The minimal fixture contains one hidden edit bone and one independent visible
+  unselected bone. Blender desktop runs `ARMATURE_OT_reveal(select=true)`,
+  revealing and selecting only the hidden bone while preserving both geometries.
+- Main exposes the saved hidden and selected flags from the same fixture. The
+  comparator confirms desktop/WASM parity and save/reopen stability without
+  expanding other data-blocks, editors, or browsers.
+
+evidence:
+
+- Fixture generation, desktop checker, npm comparator, direct comparator,
+  malformed-input negative, save/reopen check, and task-context handoff passed.
+- Repeated checker execution is idempotent (`SKIPPED_ALREADY_APPLIED` after the
+  first run); Chromium-only policy was preserved and no Firefox/WebKit run was
+  made.
+
+nextTask: `M16-GAP-00249`