Add standard ports mapping and update port formatting for improved consistency

config-sub-converter/scripts/external-proxies-sanitizer.js

@@ -146,8 +146,16 @@ const PROTOCOL_ICONS = {
   tuic: ""
 };
 
+const STANDARD_PORTS_BY_TYPE = {
+  wireguard: new Set(["51820"]),
+  vless:     new Set(["443"]),
+  trojan:    new Set(["443"]),
+  ss:        new Set(["443"]),
+};
+
 const PROTOCOL_ICON_DEFAULT = ""; // fallback icon if type is unknown
 
+
 const METATAG_RULES = {
   // Keys are "network/type" OR "/type" (network-agnostic) OR "network/" (type-agnostic)
   // Matching priority: exact "network/type" -> "/type" -> "network/" -> default
@@ -170,9 +178,9 @@ const METATAG_RULES = {
 // Port formatting: superscript digits with left padding to 4 chars
 // 𝟎𝟏𝟐𝟑𝟒𝟓𝟔𝟕𝟖𝟗
 const PORT_FORMAT = {
-  padLeftTo: 5,
+  padLeftTo: 3,
   padChar: "0",
-  superscripts: {
+  fancy: {
     "0": "𝟎", "1": "𝟏", "2": "𝟐", "3": "𝟑", "4": "𝟒", "5": "𝟓", "6": "𝟔", "7": "𝟕", "8": "𝟖", "9": "𝟗",
   },
 };
@@ -191,12 +199,14 @@ function uWordBoundaryGroup(inner) {
   return new RegExp(`(?:^|[^\\p{L}\\p{N}])(?:${inner})(?=$|[^\\p{L}\\p{N}])`, "iu");
 }
 
-function portToSuperscript(port) {
+function portToFancy(port, type) {
   let p = String(port ?? "").trim();
-
-  // keep only digits, because providers love putting garbage here
   p = p.replace(/[^\d]/g, "");
-  if (!p) p = "0";
+  if (!p) return "";
+
+  if (STANDARD_PORTS_BY_TYPE[type]?.has(p)) {
+    return "";
+  }
   
   // left pad to fixed width
   if (PORT_FORMAT.padLeftTo && p.length < PORT_FORMAT.padLeftTo) {
@@ -205,7 +215,7 @@ function portToSuperscript(port) {
 
   // map digits
   let out = "";
-  for (const ch of p) out += PORT_FORMAT.superscripts[ch] ?? ch;
+  for (const ch of p) out += PORT_FORMAT.fancy[ch] ?? ch;
   return out;
 }
 
@@ -215,7 +225,7 @@ function buildMetaTag(proxy) {
   const port = safeStr(proxy && proxy.port);
 
   const { icon, matched } = metaPairIcon(net, typ);
-  const portSup = portToSuperscript(port);
+  const portSup = portToFancy(port, typ);
 
   if (icon === METATAG_RULES.defaultPair && METATAG_RULES.includeFallbackText) {
     return `${icon}${portSup}(${normalizeToken(net)}/${normalizeToken(typ)})`;