agent: Arch support

script/install.d/98-clean.sh

@@ -8,8 +8,19 @@
 if [[ "$OSTYPE" == "darwin"* ]]; then
     brew cleanup
 elif [[ "$OSTYPE" == "linux-gnu"* ]]; then
-    sudo apt-get autoremove -qq
-    sudo apt-get clean -qq
+    if command -v apt-get >/dev/null 2>&1; then
+        sudo apt-get autoremove -qq
+        sudo apt-get clean -qq
+    elif command -v pacman >/dev/null 2>&1; then
+        # Remove orphans if any (ignore error if none)
+        if pacman -Qtdq >/dev/null 2>&1; then
+            sudo pacman -Rns --noconfirm $(pacman -Qtdq) || true
+        fi
+        # Clear package cache without interactive prompt
+        yes | sudo pacman -Scc >/dev/null 2>&1 || true
+    else
+        log_warn "Skipping cleanup: no supported package manager found"
+    fi
 fi
 
 log_pass "Cleanup completed successfully!"