**Related issue:** Resolves#48177
# Checklist for submitter
- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
## Testing
- [x] Added/updated automated tests
- [x] QA'd all new/changed functionality manually
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## Summary by CodeRabbit
* **Style**
* Standardized action wording across the UI from “Create” to “Add” for
fleets, packs, users, and reports.
* Updated related labels in command palette items, empty states,
buttons, links, and modal titles to match the new terminology.
* **Tests**
* Updated UI tests to assert the revised button and link text in
affected fleet, host, and report flows.
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Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
