[StephenHodgson]

• upgrade to node24
• bump deps
• rename architecture to platform, defaulting to the project's platforms
• add certificate-password, windows-sdk-version and store-association-path inputs
• add bundles output
• sign packages with the certificate file instead of its thumbprint
• support windows sdk 10.0.26100 and newer
• fall back to an installed platform toolset when the project's is missing
• update docs and validation tests

[Copilot]

🟡 Changes recommended

The custom-certificate workflow fails during packaging because the manifest publisher does not match the certificate subject, preventing certificate validation from running.

7 open issues

• Match the test manifest publisher to the certificate · New
• Select the project containing the app manifest · New
• Avoid signing Store uploads without a matching certificate · New
• Preserve whitespace in certificate passwords · New
• Clean the actual nested AppPackages output directory · New
• Update manifest identity and version using XML parsing · New
• Handle empty AppxBundlePlatforms elements · New

What changed in this PR

Updates unity-uwp-builder to v2, modernizing the GitHub Action runtime and expanding packaging support for Unity-exported UWP projects.

Changes:

• Moves to Node 24, updates dependencies, and replaces @actions/glob with a compatibility wrapper around glob.
• Adds certificate-password, SDK selection, Store association, and bundle outputs, plus platform-toolset fallback.
• Restructures CI around reusable builds and editor matrices, with output validation, retries, and release-tag automation.

File	Description
tsconfig.json	Updates TypeScript configuration for bundling.
src/​index.ts	Expands signing, Store association, SDK handling, and package discovery.
src/​glob.ts	Adds a glob compatibility wrapper.
README.md	Documents v2 usage, inputs, outputs, and runner requirements.
package.json	Bumps the release version and dependencies.
package-lock.json	Locks updated dependencies.
dist/​sourcemap-register.js	Refreshes bundled source-map support.
dist/​licenses.txt	Updates bundled dependency licenses.
action.yml	Declares Node 24 and the expanded action interface.
.github/​workflows/​validate.yml	Coordinates editor matrices, row checks, and validation results.
.github/​workflows/​update-release-tags.yml	Adds release-tag automation.
.github/​workflows/​rerun-validate.yml	Retries selected transient validation failures.
.github/​workflows/​build.yml	Adds reusable Unity builds and package checks.
.github/​workflows/​build-options.json	Defines standard build-matrix options.
.github/​workflows/​build-options-legacy.json	Defines legacy-editor build options.

_{Review effort: Balanced}