Add build system ISO generation and QEMU improvements

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

scripts/build-iso.sh

@@ -2,14 +2,18 @@
 
 # Build Red Bear OS live ISO
 # Usage: ./scripts/build-iso.sh [CONFIG_NAME] [ARCH]
-#   CONFIG_NAME  - build config (default: redbear-full)
+#   CONFIG_NAME  - build config (default: redbear-live)
 #   ARCH         - target architecture (default: x86_64)
 
 set -euo pipefail
 
-CONFIG_NAME="${1:-redbear-full}"
+CONFIG_NAME="${1:-redbear-live}"
 ARCH="${2:-x86_64}"
 
+if [ -z "${CI:-}" ] && { [ ! -t 0 ] || [ ! -t 1 ]; }; then
+    export CI=1
+fi
+
 echo "Building Red Bear OS ISO"
 echo "  config: ${CONFIG_NAME}"
 echo "  arch:   ${ARCH}"
@@ -17,4 +21,4 @@ echo "  arch:   ${ARCH}"
 make live CONFIG_NAME="${CONFIG_NAME}" ARCH="${ARCH}"
 
 echo ""
-echo "Done: redbear-live.iso"
+echo "Done: build/${ARCH}/${CONFIG_NAME}.iso"