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Paulus SchoutsenandClaude Fable 5
50c6845f28
_build_registry() ran at module import time despite its docstring promising laziness — the first register_entity RPC imported all 31 domain proxy modules (each pulling its whole component package) on main's event loop: measured ~384 ms / +67 MB cold. proxy_class_for() now imports just the requested domain's module on first use (memoized; introspects the module's single SandboxProxyEntity subclass, so the irregular names like SandboxDateTimeEntity need no table), and the bridge warms it via the import executor so the one-time import doesn't block the loop either. Measured: 27 ms / +7 MB for the first light entity, 0.7 us memoized, unknown domains fall back to the generic proxy. Deletes the 75-line hand-rolled registry. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QCotUYum6AoisyrxshoiJJ
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