make: re-sign installed binary on macOS

ober

fe9206f6ecde0e1bf7bd1c919e3304d48ffbf25a

diff --git a/Makefile b/Makefile
index ca40b1d..fde0baf 100644
--- a/Makefile
+++ b/Makefile
@@ -120,6 +120,10 @@ install: binary
 	cp jcode $(HOME)/.local/bin/jcode
 	cp vendor/termbox2/jcode_tui_shim.dylib $(HOME)/.local/bin/jcode_tui_shim.dylib 2>/dev/null || true
 	cp vendor/chez-sqlite/chez_sqlite_shim.so $(PREFIX)/lib/chez_sqlite_shim.so 2>/dev/null || true
+	@if [ "$$(uname)" = "Darwin" ]; then \
+	  codesign --force --sign - $(HOME)/.local/bin/jcode; \
+	  [ -f $(HOME)/.local/bin/jcode_tui_shim.dylib ] && codesign --force --sign - $(HOME)/.local/bin/jcode_tui_shim.dylib || true; \
+	fi
 	@echo "Installed to ~/.local/bin/jcode"
 
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