Backend returned { error: message } on 400 but frontend expected { message }.
catchInternal swallowed Axios errors and returned undefined, causing a
generic 'An internal error occurred' message instead of the real reason
(already installed, already in progress, not found).
- Fix 400 response shape to { success: false, message } in controller
- Replace catchInternal with direct error handling in installService,
affectService, and forceReinstallService API methods
- Extract error.response.data.message from Axios errors so callers
see the actual server message
b2c9252342