Add String() method for stepCompleteMsg logging serialization

[Copilot]

Implemented the TODO in cmd/start/model.go to serialize stepCompleteMsg for structured logging.

Changes

• Added String() method to stepCompleteMsg that formats all 8 fields into a readable string representation
• Added unit tests with 5 test cases covering empty, partial, and complete field configurations

Usage

The String() method can now be used directly with loggers or fmt functions:

msg := stepCompleteMsg{
    message: "Script found",
    waiting: true,
    quickstartScriptPath: "./quickstart.sh",
    executeScript: true,
}

log.Debug("step complete", "msg", msg)
// Output: stepCompleteMsg{message: "Script found", waiting: true, done: false, hideMenu: false, quickstartScriptPath: "./quickstart.sh", selfUpdate: false, executeScript: true, needTemplateSetup: false}

Currently, handleStepComplete logs each field individually as key-value pairs. The String() method provides an alternative for contexts requiring a single serialized representation.

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:

• taskfile.dev
  • Triggering command: /usr/bin/curl curl --location REDACTED l/linux_amd64/vet /tmp/go-build1396981984/b230/vet.cfg ux-amd64/src/net-p 0.1-go1.25.5.lingithub.com/charmbracelet/x/cellbuf ux-amd64/pkg/tool/linux_amd64/vet (dns 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

Work on TODO: write a function that serializes stepCompleteMsg to a string, for logging (from cmd/start/model.go)

Created from VS Code via the GitHub Pull Request extension.

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