Current entry-fix core: optional Mass UI verification

M4 completed on 2026-10-13, UE5.8.3 CL58210709 Win64 with MassForge 0.2. Pipeline 70844 terminated with exit 0. Commands: Tools/run_mass_current_core.ps1 -Tag M4, then python Tools/verify_mass_current_core.py --tag M4. Final status: PASS_SCOPED_CURRENT_CORE_OPTIONAL_UI.

The verifier pins 93 original files: current 64-file core including the nullable-entry cleanup fix, 29 optional files and five original sample packages. It checks 275 privately pinned SDK sources, no SDK Content, exact package receipts and eight source/exact Development reports: Mass/Standalone × normal/enlarged × source/cooked. Each report passes 19 required assertions. Native actual-entity lifecycle automation passes; two saved Blueprints compile with zero errors, warnings or failed loads.

Editor Development build: 104.09 seconds. BuildCookRun: 130.58 seconds. IFMass-M4-Verification.json records exact source/log/report/staging hashes and the bounded host-generated AndroidFileServer override. Canonical configuration is unchanged. The launcher’s final console line retained an M3 label; the explicit M4 paths, arguments and receipt establish the actual run. A verifier-local argument-list variable initially shadowed the parsed CLI arguments; this was corrected and the complete audit rerun successfully. No product change resulted.

The cooked enlarged Mass final frame was inspected: Orin vitality, selection/action labels, focused Reinforce, panel bounds and scrolling readout are readable. This single frame is a scoped visual review, not all-transition certification.

SDK host/archive are private validation only, never distributed. Standalone provider mode in this SDK host does not prove SDK absence; independent core/default examples have separate proof. Physical controllers are user-deferred; no multiplayer, non-Windows or older-engine integration claim. Historical M3 remains pinned to its earlier core. This milestone is not whole-goal completion.