Worker Build Fix Bundles WASM Binary With JS Loader to Prevent Silent Deploy Failures

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A flaw in a Worker package build process left the WebAssembly (WASM) binary out of the final package, even though the JS loader was correctly included. The issue went undetected because dirty workspaces retained binaries from previous builds, creating a false impression of completeness. Without both artifacts, the package could not verify its own runtime, risking unpredictable failures that only surfaced at runtime rather than during the build phase. The fix treats the JS loader and WASM binary as a single release unit by synchronizing their generation, explicitly copying both into the distribution directory, and adding SHA-256 checksum verification. Developers are advised to rebuild the binary in CI with pinned dependencies and verify the hash there, rather than committing large binary files to the repository.

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