fix: installer detects scan-only server and skips pacman repo

- Queries /api/status for scan_only flag
- Scan-only: no [aur-shield] in pacman.conf, removes stale entry if present
- Full mode: adds/updates repo as before
- No more pacman sync errors when LAN server is offline

install-client.sh

@@ -33,17 +33,31 @@ SHIELD_PORT="$SHIELD_PORT"
 EOFCONF
 echo "✓ Config written to /etc/safe-yay.conf"
 
-# Add pacman repo
+# Add pacman repo (skip if scan-only server — no repo needed)
+# Check if server is scan-only by querying status
+SERVER_SCAN_ONLY=$(curl -sf "http://$SHIELD_HOST:$SHIELD_PORT/api/status" 2>/dev/null | python3 -c "import sys,json; print(json.loads(sys.stdin.read()).get('scan_only',False))" 2>/dev/null || echo False)
+
 PACMAN_CONF="/etc/pacman.conf"
-REPO_ENTRY="[aur-shield]
+
+if [ "$SERVER_SCAN_ONLY" = True ]; then
+    echo "✓ Scan-Only Server erkannt — kein pacman repo nötig (client baut lokal)"
+    # Remove aur-shield repo if it exists from a previous full-mode install
+    if grep -q "^\[aur-shield\]" "$PACMAN_CONF"; then
+        echo "  Entferne veralteten [aur-shield] Eintrag aus pacman.conf..."
+        sudo sed -i '/^\[aur-shield\]/,/^\[/{/^\[aur-shield\]/d; /^\[/!d}' "$PACMAN_CONF"
+        sudo sed -i '/^# AUR-Shield/d' "$PACMAN_CONF"
+        echo "  ✓ Entfernt"
+    fi
+else
+    REPO_ENTRY="[aur-shield]
 Server = http://$SHIELD_HOST:$SHIELD_PORT/repo
 SigLevel = Never"
 
-if grep -q "^\[aur-shield\]" "$PACMAN_CONF"; then
+    if grep -q "^\[aur-shield\]" "$PACMAN_CONF"; then
         echo "⚠ [aur-shield] already exists — updating server URL..."
         sudo sed -i "/^\[aur-shield\]/,/^\[/ s|Server = .*|Server = http://$SHIELD_HOST:$SHIELD_PORT/repo|" "$PACMAN_CONF"
         echo "✓ Updated repo server URL"
-else
+    else
         echo "Adding [aur-shield] to $PACMAN_CONF..."
         sudo tee -a "$PACMAN_CONF" > /dev/null << EOF
 
@@ -51,6 +65,7 @@ else
 $REPO_ENTRY
 EOF
         echo "✓ Added repo entry"
+    fi
 fi
 
 # Install safe-yay wrapper