update

Check for CO2 status line updates via GitHub, display changelog, obtain user confirmation, and execute update. Read the plugin's package.json for the installed version:

node -e "process.stdout.write(JSON.parse(require('fs').readFileSync('${CLAUDE_PLUGIN_ROOT}/package.json','utf8')).version)"

If that fails, fall back to VERSION file or treat as 0.0.0.

Check GitHub for latest version:

curl -sL https://raw.githubusercontent.com/stuartshields/claude-co2-status-line/main/package.json | node -e "let d='';process.stdin.on('data',c=>d+=c);process.stdin.on('end',()=>console.log(JSON.parse(d).version))"

If check fails, show offline message and exit.

Compare installed vs latest:

If installed == latest:

## CO2 Status Line Update

**Installed:** X.Y.Z
**Latest:** X.Y.Z

You're already on the latest version.

Exit.

If installed > latest: Show "ahead of latest" message and exit.

If update available, fetch and show changelog BEFORE updating:

curl -sL https://raw.githubusercontent.com/stuartshields/claude-co2-status-line/main/CHANGELOG.md

Extract entries between installed and latest versions. Display preview and ask:

Use AskUserQuestion:

• Question: "Proceed with update?"
• Options:
  • "Yes, update now"
  • "No, cancel"

If user cancels, exit.

Update the plugin:

claude plugin update co2-status-line

Clear the update cache:

CLAUDE_DIR="${CLAUDE_CONFIG_DIR:-$HOME/.claude}"
rm -f "${CLAUDE_DIR}/cache/co2-update-check.json"

``` CO2 Status Line updated to vX.Y.Z

Restart Claude Code to pick up the changes.

</step>

</process>