perf: codespaces

script/install.d/03-apt.sh

@@ -5,6 +5,9 @@
 #   (distros with apt only) Install core apt packages.
 #
 
+# Skip in Codespaces (pre-installed in universal image)
+[[ "$DOTS_ENV" == "codespaces" ]] && { log_pass "Skipping in Codespaces"; return 0; }
+
 # apt only
 [[ "$DOTS_PKG" != "apt" ]] && { log_warn "Skipping: Not using apt"; return 0; }