feat(i18n, config): enhance agent management localization and add settings/currencies hub cards

Added new agent-related translation keys across English, Nepali, and Chinese including agentCode, agentName, loginUsername, and detailTabs. Enhanced agent console hints for child creation permissions and line root profile read-only states. Added validation error messages for share/rebate parent limits and username charset validation. Introduced common status labels (enabled/disabled) and yes/no/none text

src/i18n/locales/en/agents.json

@@ -4,6 +4,9 @@
   "bindAccountPasswordRequired": "This agent has no login account yet. Enter an initial password to create one.",
   "childrenCount": "Direct downline",
   "code": "Code",
+  "agentCode": "Agent code",
+  "agentName": "Agent name",
+  "loginUsername": "Login name",
   "codeRequired": "Code and name are required",
   "createChild": "Add child agent",
   "createSuccess": "Created agent {{name}}",
@@ -29,6 +32,7 @@
   "deleteSuccess": "Deleted agent {{name}}",
   "depth": "Depth",
   "detailTitle": "Node details",
+  "detailTabs": "Agent details",
   "directoryStatus": {
     "all": "All statuses",
     "disabled": "Disabled only",
@@ -78,6 +82,7 @@
     "downlineEmptyShort": "No direct downline yet.",
     "downlineEmptyTitle": "No direct downline yet",
     "editAccount": "Account & status",
+    "editAgent": "Edit agent",
     "editCurrent": "Edit this agent",
     "expand": "Expand",
     "kicker": "Credit share · Agent tree",
@@ -107,6 +112,13 @@
     "tabDownline": "Downline",
     "tabOverview": "Overview",
     "tabPlayers": "Players",
+    "createDirectPlayer": "Create direct player",
+    "createDownline": "Create child agent",
+    "editDownline": "Edit agent",
+    "deleteDownline": "Delete agent",
+    "addChildUnavailableHint": "This agent has not enabled \"Allow creating sub-agents\". Adjust the agent profile first.",
+    "addChildNoPermissionHint": "Your account does not have permission to create sub-agents on this node.",
+    "lineRootProfileReadOnlyHint": "Level-1 agent share, site credit, and rebate are configured by the platform super admin. You can grant credit to downline agents and players.",
     "tabProfile": "Share & credit",
     "tabProfileReadOnly": "Share & credit (read-only)",
     "viewAll": "View all"
@@ -187,6 +199,9 @@
       "creditExceedsParentWithMax": "Credit limit cannot exceed {{max}}",
       "creditInvalid": "Credit limit cannot be negative",
       "defaultExceedsLimit": "Default player rebate cannot exceed the rebate ceiling",
+      "defaultExceedsLimitWithMax": "Default player rebate cannot exceed {{max}}%",
+      "shareExceedsParent": "Share rate cannot exceed parent (max {{max}}%)",
+      "rebateExceedsParent": "Rebate ceiling cannot exceed parent (max {{max}}%)",
       "defaultRebateRange": "Default player rebate must be between 0 and 100%",
       "rebateLimitRange": "Rebate ceiling must be between 0 and 100%",
       "shareRange": "Share rate must be between 0 and 100"
@@ -381,6 +396,7 @@
   "updateSuccess": "Updated {{name}}",
   "usernamePlaceholder": "Enter login username",
   "usernameRequired": "Login name is required",
+  "usernameInvalidCharset": "Login name may only contain letters, digits, dots (.), underscores, and hyphens",
   "users": {
     "create": "Create account",
     "createSuccess": "Created account {{name}}",