Style Optimization

Startup crash regression fixed

• Fixes the reported IllegalArgumentException: ModLauncher does not support retrieval of untransformed bytecode. Earlier Fix and Fix 2 used this unsupported call and have been archived. Use Fix 3 instead.
• Replaces both FWA startup probes with direct original-class resource parsing via ASM, without defining or transforming optional mod classes. Missing probe resources disable the optional adapter and block the obsolete FWA bridge safely.
• Retains the FWA 1.3.4 / EntityCulling 1.12 compatibility guard and the independent, bounded animation-occlusion adapter. The old EntityCulling 1.11.3 path stays unchanged.
• Regression tests now invoke the actual cancellation and optional-plugin startup entry points against the frozen mod references, in addition to field/method descriptors, visibility forwarding, lifecycle, camera/expiry/world-change and optional-dependency checks. Tests pass. No game was launched; a successful full-pack boot is not claimed.

Core-only hotfix; no 13-engine aggregate. Includes original MixinSquared 0.3.3 by Bawnorton under MIT. Install in place of the earlier Style Optimization JAR, not alongside it. Microsoft/Mojang Service unavailable authentication responses are a separate issue and are not bypassed or claimed fixed by this release.