CyclicShifter fails on lv2lint

[dvzrv]

When packaging 1.6 for Arch Linux I ran into an issue with validating CyclicShifter using lv2lint:

lv2lint 0.16.2
Copyright (c) 2016-2021 Hanspeter Portner (dev@open-music-kontrollers.ch)
Released under Artistic License 2.0 by Open Music Kontrollers
Host does not provide nominalBlockLength or maxBlockLength options
<http://www.niallmoody.com/ndcplugs/cycleshifter.htm>
    [WARN]  Plugin Author Email
              foaf:mbox not found
              seeAlso: <http://lv2plug.in/ns/lv2core#project>
    [FAIL]  Plugin Class
              type <http://usefulinc.com/ns/doap#Project> not valid
              seeAlso: <http://lv2plug.in/ns/lv2core#Plugin>

I have the following installed in the build environment:

• kxstudio-lv2-extensions 2022.09.28
• lv2lint 0.16.2
• lv2 1.18.10

This issue also happens with 1.5 (currently installed):

lv2lint http://www.niallmoody.com/ndcplugs/cycleshifter.htm
lv2lint 0.16.2
Copyright (c) 2016-2021 Hanspeter Portner (dev@open-music-kontrollers.ch)
Released under Artistic License 2.0 by Open Music Kontrollers
<http://www.niallmoody.com/ndcplugs/cycleshifter.htm>
Host does not provide nominalBlockLength or maxBlockLength options
    [FAIL]  Plugin Symbols
              binary exports superfluous globally visible symbols:
                * lv2_generate_ttl
              seeAlso: <http://lv2plug.in/ns/lv2core#binary>
    [WARN]  Plugin Author Email
              foaf:mbox not found
              seeAlso: <http://lv2plug.in/ns/lv2core#project>
    [FAIL]  Plugin Class
              type <http://usefulinc.com/ns/doap#Project> not valid
              seeAlso: <http://lv2plug.in/ns/lv2core#Plugin>

[falkTX]

what do you have on the generated CyclicShifter dsp lv2 ttl?
this plugin does not have a specific category, so I think it ends up with just "a lv2:Plugin, doap:Project ;" which is valid syntax.
please confirm.