…ensions

…ew feedback

BridgeJS: expand integer and raw-value enum support

BridgeJS: Correctly emit @js methods in extensions

Revert of #694. Required to unblock CI on #702.

* Bump Swift toolchain snapshots in `test.yml`

Bumping to `2026-03-05` for 6.3 and `2026-03-09` for `main`.

* Fix concurrency `@_spi`

* Downgrade `main` snapshot to old version

* Fix 6.3 build error

* EmbeddedApp/main.swift: Fix capitalization in print statement

* Add `Examples/EmbeddedConcurrency`

* EmbeddedConcurrency: don't use `-c release` for SwiftSyntax

Remove the '-c release' option from the build command.

* Fix warnings with untyped throws, fix npm install error

# Conflicts:
#	Examples/EmbeddedConcurrency/build.sh

* Fix formatting

* Bump `build-examples` snapshots to 2026-03-14

* Use 2026-03-09 for `main` development snapshots

* Add Swift version check before building examples

* Exercise `await` on `JSPromise/value`

* Address PR feedback

* Move `EmbeddedConcurrencyApp` to fixtures

* Temporarily disable `main` snapshots

* Removing crashing test from the PR

…eck (#705)

Gate `ExperimentalCustomExecutors` usage behind Swift 6.4 for non-Wasm targets

Seems like it's dropped in Swift 6.3 rc shipped along with Xcode 26.4 RC
in the last minute