plugin-build-smoke-regression - SKILL.md Agent Skill

name: "plugin-build-smoke-regression" description: "Catch packaging-script regressions by asserting the real script exit path and current overlay surface." domain: "build-tests" confidence: "high" source: "observed"

Use this when a packaging or publish script has a real smoke-path failure that synthetic file assertions missed.

Add at least one test that runs the real script entry point and asserts exit code 0 plus the final human summary/output block.
Keep synthetic template fixtures aligned with the current shipped overlay names, not historical file names.
Assert current assets are present and legacy bootstrap files are absent, so stale template content cannot make tests pass accidentally.
Prefer ASCII summary assertions for PowerShell smoke tests when prior failures involved parser/host issues around fancy status output.

tests/ExcelMcp.SkillGeneration.Tests/PluginBootstrapBuildTests.cs: BuildPlugins_SmokeRun_ExitsZeroAndPrintsAsciiSummary
tests/ExcelMcp.SkillGeneration.Tests/PluginBootstrapBuildTests.cs: current bootstrap assets use bin\download.ps1 and reject legacy download-mcp.ps1 / download-cli.ps1 / packaged bootstrap-state.json

Do not validate only copied files when the real failure happened in script shutdown/status output.
Do not let synthetic fixtures carry obsolete helper names that the shipped overlay no longer uses.