Push

Push current branch to remote.

## Before anything else

Check `git branch --show-current`. If on a protected branch (`develop`, `main`, or `master`):
  → Determine the base branch: for the egregore hub use `develop`, for managed repos read `base_branch` from `egregore.json` repos[] (default `"develop"`)
  → Create a working branch: `git fetch origin $BASE_BRANCH --quiet && git checkout -b dev/{author}/{topic-slug} origin/$BASE_BRANCH`
  → Tell the user: "Creating a working branch for this..." — never mention git commands to the user.
  → Then proceed with the push.

## What to do

1. Push current branch to origin
2. Set upstream if first push

## Example

```
> /push

Pushing feature/2026-01-20-mcp-authentication...

  git push -u origin feature/2026-01-20-mcp-authentication
  ✓ Pushed

Branch is now on GitHub.
Run /pr when ready for review.
```

## Next

Run `/pr` when ready for review.