Apply tag to entire model

There should be a tag option that applies a specific tag to every block in the model. This would be very helpful for instances where you need to change the HP of a model by recognizing a laser hit (or any other form of impact).
The action icon could look like this:

No files or tests are identified. Start by locating the model/block tagging and action-icon entry points, then clarify how the tag should propagate to every block and how impact-based HP changes should detect it; done means the option applies the selected tag across the model.

Written by the indexing model from the issue text.