Duplicating a playbook whose title is 249+ characters always failed: the
page sent `${title} (copy)`, which the server refuses as over its
255-character limit.
copyTitle (web/src/lib/items/titleLimit.ts) cuts the SOURCE, by code point
after Go's TrimSpace, so that base + " (copy)" <= MAX_ITEM_TITLE_RUNES, then
re-trims the trailing whitespace the cut exposes (on Go's space set) and
appends the suffix. No ellipsis, matching the server's import cut. The
suffix is kept because it is the only part of the title that tells the
copy from its original.
Claude-Session: https://claude.ai/code/session_01Vf8uZmYdsrQqJtbAmjUFSX
xarmian
0d0c0cfb0a