[wieslawsoltes]

Problem and resulting behavior

The release package workflow retained its Windows build implementation but stopped scheduling win-x64. Green package runs therefore covered only macOS arm64 and Linux x64, which could not satisfy the cross-platform acceptance required by #79 and #80.

This change restores the existing Windows x64 native build and installed-package consumer, requires Windows in required/candidate evidence and release-package inventory, and adds a policy regression that keeps all three supported RIDs in every release gate.

Closes #160. Prerequisite for Stack #157 (#125 then #126). Related to #79, #80, and draft consolidation PR #76.

Native GitHub stack #170

1. Isolate ANGLE from inherited Visual Studio state #166 — isolate ANGLE from inherited Visual Studio state.
2. Isolate V8 from inherited Visual Studio state #169 — isolate V8/depot_tools from inherited Visual Studio state.
3. Restore Windows native package acceptance #161 — current — restore Windows to the complete native package/evidence/consumer gate.

Stack #157 remains held until all prerequisite layers merge and its exact heads repeat the restored Windows gate.

Scope

• Restore windows-2022 / win-x64 to the native package matrix.
• Require win-x64 in cross-RID required and candidate evidence.
• Require the Windows runtime package in release inventory verification.
• Restore the Windows installed-package consumer.
• Lock macOS arm64, Linux x64, and Windows x64 into those five gates with a policy unit test.

The existing PowerShell build remains the source of the Windows implementation. It builds the V8 runtime, runs the complete native CTest suite before packing, runs required Web Platform Test evidence against the packaged DLL, and produces the RID package.

Validation

• python3 -m unittest scripts/tests/test_native_runtime_workflow_policy.py scripts/tests/test_verify_cross_rid_compatibility.py — 10 tests passed.
• actionlint .github/workflows/native-runtime-packages.yml — passed.
• git diff --check — passed.
• Head 578c44b977a2f1c8a5d993277f02dfa3c2cb9c69: CI 35120274050 passed; package 35120274047 exposed the sequential Dawn→ANGLE environment failure tracked by Isolate ANGLE from inherited Visual Studio state #165.
• Head 518eaeca142327c8c08b68e34e7007ae565b9758: CI 35123381487 passed; package 35123381474 proved Dawn→ANGLE succeeds, then exposed V8 inheriting the initialized Visual Studio environment. That boundary is tracked by Isolate V8 toolchain discovery from inherited Visual Studio state #168/Isolate V8 from inherited Visual Studio state #169.
• Head 7ce801d97e08d8bf24c067e84b8cf7a0e18cc262: CI 35132417195 passed; package 35132417202 was canceled after review tightened partial-environment and cold-build acceptance in Isolate V8 from inherited Visual Studio state #169.
• Head 585131f43f4c75f833b324821d6e96c22ae8ff1c: superseded CI 35136011140 and package 35136010867 were canceled when Windows cache acceptance was tightened to exact-key restore only.
• Current Stack #170 head 24fdb3da1302364940444c331b6df9019585b6cb: exact CI 35136218314 and three-RID package 35136218434 are active.

The exact GitHub Windows build, package consumer, required/candidate evidence, and package-set results remain merge gates for this draft PR. After merge, Stack #157 must rebase and repeat the exact win-x64 package lane before either stacked PR merges.