photo_categories.name is varchar(100). Neither the input nor the route
checked length, so a 267-char name hit a raw Postgres "value too long",
came back as a 500, and the form silently stayed open with no toast.
Add isLength({ max: 100 }) to POST / and PUT /:id (the update route had the
identical gap) so it returns the route family's normal 400 { errors: [...] }
shape that the toast helper already renders, and maxLength={100} on the three
category-name inputs (create + inline edit in CategoryManager, create in
EventCategoryManager).
Refs testplan REPORT.md #4 (Part 7.01).
Paul Nothaft
5fa04e647e