cleanup: replace FIXMEs with tracked issues

scripts/install.sh

@@ -47,8 +47,6 @@
 #   DSH_CURRENT      stable symlink to the active worktree (default: $DSH_SOURCE/current)
 #   DSH_BIN_DIR      directory the `dsh` symlink lands in (default: ~/.local/bin)
 #   DSH_HOME         Harness home holding profiles and user patches (default: ~/.dsh)
-# FIXME(install-ts): Move the post-checkout workflow into a tested TypeScript
-# entrypoint; keep this POSIX shell file as the curl/source bootstrap.
 set -eu
 
 DSH_REF=${DSH_REF:-master}