## Why
Optimized `Array.prototype.sort` can write objects into incompatible array element storage when receiver element kinds differ and the comparator mutates the array.
## What changed
- Upgrade `v8` to `152.2.0`, the Bazel V8 source to `15.2.124.1`, and ICU data and initialization to version 78.
- Backport element-kind agreement checks for sort inlining in TurboFan and Maglev. Apply the patch to Bazel builds and Windows MSVC source builds, and include it in source-build cache keys and canary triggers.
- Refresh pinned sandbox archives and bindings, extend Bazel prebuilt coverage to musl Linux, and use matching sandbox bindings on Windows MSVC.
- Update Bazel integration patches and runtime dependencies for the new V8 release, and download the pinned Windows build tools in source-build workflows.
## Testing
Include the upstream sort regression test covering mixed element kinds, comparator mutation, and continued optimization for matching kinds. Add a test requiring canary and Windows source builds when the backport changes, and update artifact-fetch tests for the new version.
GitOrigin-RevId: 138b7821cddd25466c10aced1dd22be24837caf0
## What changed
- Add an x64 and ARM64 MSVC runtime preparer that uses `dumpbin` to validate
PE32+ DLL metadata, selects the declared GStreamer plugins and dependency
closure, and copies them unchanged into a private `bin/` directory.
- Reject malformed or unsupported PE metadata, path-bearing imports, delayed
imports, managed DLLs, forwarded exports, undeclared dependencies, and
case-insensitive DLL identity conflicts.
- Keep `third_party/voice/sources.json` line endings stable across Windows
checkouts so native build receipts remain valid.
## Testing
Add native Windows tests for relocated DLL loading with a restricted search
path, receipt and digest failures, duplicate identities, malformed PE headers,
unsupported loader features, and cleanup after failed preparation.
GitOrigin-RevId: 5375f21fc54f5d597f3d4e5f8fbca3df307fa2a8
Sean Huang