fix: copy scripts/lib/ for unbundled ISO builds (TUI lib was missing)

The UNBUNDLED build path didn't copy scripts/lib/ to the ISO,
so install-tui.sh was never available on unbundled installs.
The installer sourced it but the file wasn't there — no animations.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

image-recipe/build-auto-installer-iso.sh

@@ -1380,6 +1380,13 @@ FBUNBUNDLED
     chmod +x "$WORK_DIR/first-boot-containers-unbundled.sh"
     cp "$WORK_DIR/first-boot-containers-unbundled.sh" "$ARCH_DIR/scripts/first-boot-containers.sh"
 
+    # Copy shared script library (TUI animations for installer, shared utils)
+    if [ -d "$SCRIPT_DIR/../scripts/lib" ]; then
+        mkdir -p "$ARCH_DIR/scripts/lib"
+        cp "$SCRIPT_DIR/../scripts/lib/"*.sh "$ARCH_DIR/scripts/lib/" 2>/dev/null || true
+        echo "   Copied scripts/lib/ ($(ls "$ARCH_DIR/scripts/lib/" 2>/dev/null | wc -l) files)"
+    fi
+
     cat > "$WORK_DIR/archipelago-first-boot-containers.service" <<'FBCSERVICE'
 [Unit]
 Description=Create core Archipelago containers on first boot