US-013 — Assign one species to one, several, or all selected images

## User story

> As a species identifier, I want to assign one species to one, several, or all selected images, so that I can tag large batches efficiently and correct exceptions individually.

| Project field | Value |
|---|---|
| Rank | 13 |
| MoSCoW | Must have |
| Persona | Species identifier |
| Wiki source | PA1 |

## Planning notes

Agreed; warn before changing already-tagged images and preserve the documented Unknown, Test, and Ghost rules.

## Source

[SPARCd Personas & User Stories](https://github.com/CulverLab/sparcd-requirements/wiki/User-Stories)

Start with the user story in issue #58 and read the linked SPARCd Personas & User Stories wiki source, especially PA1. Define acceptance criteria for assigning a species to one, several, or all selected images, including the warning for already-tagged images and the documented Unknown, Test, and Ghost rules; done means the requirements are precise enough to guide implementation and testing.

Written by the indexing model from the issue text.