Show hostname in Starship over SSH

[crmne]

Summary

Add Starship's hostname module to the prompt with ssh_only = true.

Local prompts remain unchanged, but SSH sessions show the hostname before the directory/git segments.

Why

When working across remote shells, the current prompt makes it too easy to lose track of which machine a terminal is connected to. Starship already supports this exact use case with ssh_only, so this keeps the normal local prompt clean while making remote sessions clearer.

Testing

• STARSHIP_CONFIG=$PWD/config/starship.toml starship explain
• bash -n migrations/1780739892.sh
• smoke-tested the migration against the previous default Starship format
• git diff --check origin/dev..cp/starship-ssh-hostname-clean

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Adds Starship prompt support for showing the hostname when connected via SSH, and provides a migration script to update existing local configs safely.

Changes:

• Update Starship prompt format to include $hostname.
• Add [hostname] module configuration with ssh_only = true.
• Add a migration script to patch existing ~/.config/starship.toml if it matches the previous format.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
migrations/1780739892.sh	Introduces a migration to rewrite the Starship format line and append a [hostname] config block.
config/starship.toml	Updates the default Starship config to include hostname in the prompt when on SSH.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[dhh]

Need a screenshot here too, but I don't think I'm likely to be onboard, because it would duplicate the hostname we already have in the upper right with tmux.