Fix linting errors and bundling failures in JavaScript workflow scripts

[Copilot]

Two issues prevented clean builds: unused function linter errors and JavaScript bundling failures causing test failures.

Changes

Fixed template string bug in maintenance workflow generation

• Changed from invalid JavaScript template syntax ${getMaintenanceScript()} in Go string literal to proper fmt.Sprintf() with %s placeholder
• The maintenance workflow now correctly embeds the JavaScript code for closing expired discussions

Added missing embedded script registration

• Registered expiration_helpers.cjs in pkg/workflow/js.go with //go:embed directive and added to GetJavaScriptSources() map
• Required by create_issue.cjs, create_discussion.cjs, and create_pull_request.cjs for expiration comment functionality
• Fixes bundling failures that prevented these scripts from being inlined

Before:

content := `...
  script: |
    ${getMaintenanceScript()}  // Not evaluated in Go string
`

After:

script := getMaintenanceScript()
content := fmt.Sprintf(`...
  script: |
    %s
`, script)

This resolves TestStagedPreviewInlined and TestTrackerIDIntegration test failures caused by incomplete script bundling.

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/user
  • Triggering command: /usr/bin/gh gh api user --jq .login --show-toplevel x_amd64/compile /usr/bin/git wright" --help 64/pkg/tool/linurev-parse x_amd64/compile git rev-�� --show-toplevel x_amd64/compile ache/go/1.25.0/x64/pkg/tool/linujson kflow.test om/actions/cachesecret ortcfg.link ache/go/1.25.0/x--json (http block)
  • Triggering command: /usr/bin/gh gh api user --jq .login celain | head -n 10 x_amd64/asm epo om/actions/uploainfocmp om/actions/uploa-1 ache/node/24.11.xterm-color node pars�� .git /usr/lib/git-core/git /usr/bin/infocmp by/959a494a22431infocmp nly in/node infocmp (http block)
  • Triggering command: /usr/bin/gh gh api user --jq .login entics.git e/git 97011e184ff34d1d123f3a84c06b0176f7c/log.json om/actions/downlgh om/actions/downlsecret /usr/bin/git 7722907/b329/cli--json e=/t�� t0 git 0s tch ache/go/1.25.0/x-namespace bash gh (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

Format, lint, fix tests

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.