It seems to be the former - guaranteeing the right to grow a garden:
Section 15. Right to cultivate vegetable gardens. Notwithstanding any other law, any person may cultivate vegetable gardens on their own property, or on the private property of another with the permission of the owner, in any county, municipality, or other political subdivision of this state.
It was damaged by a fire during transportation in 2015, and as far as I can tell from googling hasn't been in the water since.
I believe the forward end cap (where the porthole is installed) is titanium, and exposed on both sides, so presumably that's what they'd be banging on.
To add to TiredSpider's comment, the dry product segment name is "string trimmer". Sometimes also called "strimmers" or "weed eaters".
(Also, the one common chore I refuse to do. I despise the things.)
Another vote for Becky Chambers, especially the Monk & Robot series, but also Wayfarers. Her novels are a bit shorter and/or less deep than you might find elsewhere (not necessarily in a bad way) but they are very solarpunk and cozy. Highly recommended.
.24 USD / W ! It would be to get those prices as a regular human here in the US - I'm seeing at least double that (even before shipping).