Add permission smoke helper

[haasonsaas]

Summary

• add scripts/permission_smoke.sh to package the app, record checksum/macOS/codesign evidence, and write a hardware smoke report template
• support --no-launch for non-invasive evidence generation and default launch for an intentional desktop smoke
• document the helper next to the packaging commands

Testing

• scripts/permission_smoke.sh --help
• scripts/permission_smoke.sh --no-launch
• shellcheck scripts/package_app.sh scripts/permission_smoke.sh
• swift test
• swift build -Xswiftc -warnings-as-errors
• xcrun swift-format lint --strict --recursive Sources Tests Package.swift
• git diff --check

[cursor]

PR Summary

Low Risk
Low risk: adds a standalone shell helper and README documentation, without changing app runtime behavior or build outputs beyond generating an optional report file.

Overview
Adds scripts/permission_smoke.sh to automate permission smoke testing: it ensures the app is packaged (calling scripts/package_app.sh if needed), captures SHA/codesign/macOS metadata, and writes a dist/permission-smoke-report.md checklist, optionally launching the app unless --no-launch is provided.

Updates README.md to document the new helper alongside existing build/packaging commands and describe what evidence it collects.

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