优化体验，修复 bug

client/src/locales/data-en.json

@@ -365,12 +365,15 @@
       "shareCopied": "Code copied",
       "shareGenerating": "Generating…",
       "shareCreateFail": "Failed to generate share code",
+      "shareActiveExists": "You already have an active share code. Please try again later.",
+      "shareInvalidParams": "Invalid request. Please check and try again.",
+      "shareSystemError": "System error. Please try again later.",
       "shareExpireAt": "Expires at",
       "importTab": "Import EQ",
       "importCodeHint": "Enter or paste the 5-character share code",
       "importQuery": "Query",
       "importQuerying": "Querying…",
-      "importCodeNotFound": "Share code not found",
+      "importCodeNotFound": "Share code not found or expired",
       "importEqName": "EQ Name",
       "importButton": "Import",
       "importSaving": "Importing…",
@@ -381,8 +384,7 @@
       "mySharesEmpty": "No shared EQ yet",
       "mySharesCode": "Code",
       "mySharesName": "EQ Name",
-      "mySharesLoadFail": "Failed to load share list",
-      "importCodeNotFound": "Share code not found or expired"
+      "mySharesLoadFail": "Failed to load share list"
     }
   },
   "dac": {