Second version of installer: asking for sudo upfront

Droidnix/install_Droidnix.sh

@@ -2,6 +2,27 @@
 
 set -euo pipefail
 
+### ─────────────────────────────
+### Step 0 — Request sudo upfront
+### ─────────────────────────────
+if ! command -v sudo >/dev/null 2>&1; then
+    echo "Error: sudo is required."
+    exit 1
+fi
+
+echo "Requesting sudo privileges..."
+sudo -v
+
+# Keep sudo alive in the background
+( while true; do sudo -n true; sleep 60; done ) &
+SUDO_KEEPALIVE_PID=$!
+
+# Ensure cleanup on exit
+cleanup() {
+    kill "$SUDO_KEEPALIVE_PID" >/dev/null 2>&1 || true
+}
+trap cleanup EXIT
+
 ### ─────────────────────────────
 ### Step 1 — Collect system identity
 ### ─────────────────────────────
@@ -68,12 +89,10 @@ done
 ### ─────────────────────────────
 echo "Replacing file contents..."
 
-# Helper: only text files
 is_text() {
     file --mime "$1" | grep -q text
 }
 
-# 5.1 generated/*
 if [ -d "$TARGET_DIR/generated" ]; then
     find "$TARGET_DIR/generated" -type f | while read -r f; do
         is_text "$f" && sed -i "s/henrov/$USER_NAME/g" "$f"
@@ -82,7 +101,6 @@ fi
 
 README="$TARGET_DIR/README.org"
 
-# 5.2 + 5.6 (org blocks only)
 if [ -f "$README" ]; then
     awk -v user="$USER_NAME" -v host="$HOSTNAME_NAME" '
     BEGIN { inblock=0 }
@@ -97,7 +115,6 @@ if [ -f "$README" ]; then
     }' "$README" > "$README.tmp" && mv "$README.tmp" "$README"
 fi
 
-# 5.3 + 5.4 global replacements
 find "$TARGET_DIR" -type f | while read -r f; do
     if is_text "$f"; then
         sed -i \