#3301 chore(main): release 3.15.4

Release components:

• unity-package: Unity Package Manager/OpenUPM package (v<version> tags).
• uloop-project-runner: native project runner binaries (uloop-project-runner-v<version> tags).
• dispatcher: native dispatcher binaries (dispatcher-v<version> tags).

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3.15.4 (2026-10-13)

Bug Fixes

• Hot reload no longer compiles just because a file without a baseline declares interface, abstract, or extern methods (#3299) (e8058b6)

Performance Improvements

• The caller-note backfill also reads the next caller level's dlls, so the run after a cold run reads none (#3298) (ab7d1af)

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