Merge commit '36c66dd290d3ce6eb1ccd310d0c658d4a32bb8eb' as 'repos/effect'

repos/effect/.changeset/clean-needles-shake.md

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+---
+"effect": patch
+---
+
+Fix module-level side effects that defeated bundler tree-shaking.
+
+Bare top-level statements cannot be `#__PURE__`-annotated by the build, so
+bundlers must retain them and everything they reference, even in bundles that
+never use the code:
+
+- `Option`: the standalone `Object.defineProperty(SomeProto, "valueOrUndefined", ...)`
+  statement anchored the whole `Option` proto chain into every bundle. It is
+  now folded into the `SomeProto` initializer.
+- `Headers`: same pattern with `Object.defineProperties(Proto, ...)`, folded
+  into the initializer.
+- `Logger`: module-level `process.stdout.isTTY` property reads (potential
+  getters, never droppable) moved inside `consolePretty`.
+- `Utils`: when `internalCall` was unused, its dropped binding left behind a
+  retained initializer tail (`standard`/`forced` probe with computed property
+  reads). The selection is now wrapped in a single pure-annotated call.
+
+A minimal `Effect.succeed(123).pipe(Effect.runFork)` bundle shrinks by ~1.3%
+gzipped; bundles that don't use `Option` or `Headers` no longer pay for them.