fix: upgrade tsconfig lib/target to es2022 to resolve Array.at() TS2550 error

[Copilot]

The js CI job was failing because resolve_host_repo.cjs uses Array.prototype.at(-1) (ES2022+), but tsconfig.json specified lib: ["es2020"], causing error TS2550: Property 'at' does not exist on type 'string[]'.

Changes

• tsconfig.json: Bumped target and lib from es2020 → es2022, consistent with tsconfig.build.json which already targets ES2022
• resolve_host_repo.cjs: Synced with main — adds targetRepoName output (repo name without owner prefix) used by actions/create-github-app-token
• resolve_host_repo.test.cjs: Synced with main — adds 3 test cases covering target_repo_name output for cross-repo, same-repo, and fallback scenarios

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/repos/github/gh-aw/contents/.github%2Fworkflows%2Faudit-workflows.md
  • Triggering command: /opt/hostedtoolcache/node/24.14.0/x64/bin/node /opt/hostedtoolcache/node/24.14.0/x64/bin/node --conditions node --conditions development --experimental-import-meta-resolve --require /home/REDACTED/work/gh-aw/gh-aw/actions/setup/js/node_modules/vitest/suppress-warnings.cjs /home/REDACTED/work/gh-aw/gh-aw/actions/setup/js/node_modules/vitest/dist/workers/forks.js --quiet e_modules/.bin/g--verify git bran�� -M main e/git-upload-pack tions/setup/nodenode h it git (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Fix the failing GitHub Actions workflow js
Analyze the workflow logs, identify the root cause of the failure, and implement a fix.
Job ID: 67010302120
Job URL: https://github.com/github/gh-aw/actions/runs/23067762888/job/67010302120

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[Copilot]

Pull request overview

Updates the JS action TypeScript configuration to ES2022 to fix CI typechecking failures (TS2550 on Array.prototype.at) and syncs the host-repo resolver script/tests with main by adding a new output used by downstream steps.

Changes:

• Bumped actions/setup/js/tsconfig.json target/lib from es2020 to es2022 to align with ES2022 runtime usage (Array.at()).
• Added a target_repo_name output to resolve_host_repo.cjs (repo name without owner prefix).
• Added/updated tests to cover target_repo_name output behavior across invocation scenarios.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
actions/setup/js/tsconfig.json	Moves TS target/lib to ES2022 so Array.at() is type-safe under checkJs.
actions/setup/js/resolve_host_repo.cjs	Emits target_repo_name derived from target_repo for consumers needing repo-only names.
actions/setup/js/resolve_host_repo.test.cjs	Adds coverage for the new target_repo_name output across cross-repo/same-repo/fallback cases.

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