fix: use collision-free path encoding for Traefik router key generation

server/lib/traefik/utils.ts

@@ -13,6 +13,26 @@ export function sanitize(input: string | null | undefined): string | undefined {
         .replace(/^-|-$/g, "");
 }
 
+/**
+ * Encode a URL path into a collision-free alphanumeric string suitable for use
+ * in Traefik router/service names and map keys.
+ *
+ * Unlike sanitize(), this preserves uniqueness by encoding each non-alphanumeric
+ * character as its hex code. Different paths always produce different outputs.
+ *
+ *   encodePath("/api")  => "2fapi"
+ *   encodePath("/a/b")  => "2fa2fb"
+ *   encodePath("/a-b")  => "2fa2db"   (different from /a/b)
+ *   encodePath("/")     => "2f"
+ *   encodePath(null)    => ""
+ */
+export function encodePath(path: string | null | undefined): string {
+    if (!path) return "";
+    return path.replace(/[^a-zA-Z0-9]/g, (ch) => {
+        return ch.charCodeAt(0).toString(16);
+    });
+}
+
 export function validatePathRewriteConfig(
     path: string | null,
     pathMatchType: string | null,