World1 Maintenance Reset - Pipeline Baseline
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Active pipeline is intentionally copied from the known-working
world-1 dimension pipeline:

    gbuffers -> composite -> composite2 -> final

Not active in world1:
- composite1.*
- deferred.*
- custom MRT chain introduced during previous tests
- root mega shaders.properties overrides

Those extra passes were making The End receive an incompatible post-process
chain and produce the white/magenta broken frame shown during testing.

This ZIP is a clean maintenance baseline. End-specific visual code can be
added after the baseline renders normally.
