Slash-command forms (hyphen vs colon)

GSD ships the same set of skills to every supported runtime, but two slash-form spellings are in play:

• Hyphen form — /gsd-command-name — used by Claude Code, Copilot, OpenCode, Kilo, Cursor, Windsurf, Augment, Antigravity, and Trae.
• Colon form — /gsd:command-name — used by Gemini CLI only. Gemini namespaces every plugin's commands under the plugin id, so the install path rewrites every body-text reference and command file to the colon form during --gemini install.

You don't need to choose — the installer writes the correct form into the command directory of each runtime you target. When following a walkthrough on a Gemini terminal, replace the hyphen after gsd with a colon as you read each slash command.