Build log
The full log of a build is native/build.log, beside the build's own folders under the launcher's data
folder (native_mods::log_path). Each new attempt replaces it. Compiler output and the final result
stay in the log, including failures before compilation or while selecting or exporting the built game.
The launcher has a Build log action at the top right. It is there whenever a log exists, also right after the launcher starts, and it always opens the latest build's log: the next build replaces it. The panel shows a bounded preview of the end of the log and says when it truncated; Copy log copies the whole file, Open full log opens it outside the launcher, Show in folder reveals it, and Refresh reads it again (also after a build finishes). The panel is a snapshot read on open and refresh, not a live stream: a running build's later output appears only on the next refresh. Nothing is uploaded; the log stays on the player's computer.