Xcode enumerates a package target's resources when it loads the
package graph, before any build phase runs. An image staged from a
script phase is missing from that build's LumaCore, and the playground
crashes on the unwrap in boot().
Move the staging into scripts/stage-pharo-image.sh, called from
generate-sources.sh and both Makefiles.
Xcode enumerates a package target's sources when it loads the package
graph, before any build phase or scheme pre-action runs, so generated
Swift that appears during a build is missing from that build.
Move generation into scripts/generate-sources.sh, run it from the
Makefile, CI and the Luma scheme's pre-action, and drop the
AgentBundle target. Say what to run when the files are not there yet.
Ole André Vadla Ravnås