fix: resolve rebase loop and apply critical CI/UI fixes

Aborted interactive rebase that caused repetitive conflict resolution
Restored manual fixes for ProxyHostForm z-index issues
Restored manual fixes for CrowdSecConfig JSX syntax
Updated .version to v0.18.13 to match git tag
Validated all changes with full pre-commit suite

frontend/src/pages/CrowdSecConfig.tsx

@@ -1175,7 +1175,6 @@ export default function CrowdSecConfig() {
         <>
           {/* Layer 1: Background overlay (z-40) */}
           <div className="fixed inset-0 bg-black/60 z-40" onClick={() => setShowBanModal(false)} />
-
           {/* Layer 2: Form container (z-50, pointer-events-none) */}
           <div className="fixed inset-0 flex items-center justify-center pointer-events-none z-50">