feat: harden support, localize knowledge and add operator availability [skip ci]

Source-only publication of reviewed commit 64e96a7f423673dc29ad56485be9fc79bce8af1c.

Passed in isolation: focused frontend/backend tests, race checks, TypeScript typecheck, lint, Go compilation, Flowgram build, and deterministic SDK build/tests.

Not accepted as a production release: Next.js export/native assembly remains blocked by environment memory limits; browser interaction and MySQL staging acceptance remain unverified. No production server, database/schema, runtime configuration, deployment, release tag, or workflow execution was performed.

Expected source tree: 0a4a7528e9.

web/app/(dashboard)/dashboard/agents/_components/edit.tsx

@@ -1,3 +1,4 @@
+// Modified in this independent fork for support availability; see docs/hardening/README.md.
 "use client";
 
 import { zodResolver } from "@hookform/resolvers/zod";
@@ -46,6 +47,7 @@ import {
   type CreateAdminAgentTeamPayload,
 } from "@/lib/api/admin";
 import { useI18n } from "@/i18n/provider";
+import { availabilityStatusOptions } from "@/lib/support-availability-i18n";
 import { ServiceStatus } from "@/lib/generated/enums";
 
 type TFunction = (key: string, values?: Record<string, string | number>) => string;
@@ -65,7 +67,7 @@ const emptyForm: EditForm = {
   agentCode: "",
   displayName: "",
   avatar: "",
-  serviceStatus: String(ServiceStatus.Idle) as "0" | "1",
+  serviceStatus: String(ServiceStatus.Idle) as "0" | "1" | "2" | "3" | "4",
   maxConcurrentCount: "0",
   priorityLevel: "0",
   autoAssignEnabled: true,
@@ -79,7 +81,7 @@ type EditForm = {
   agentCode: string;
   displayName: string;
   avatar: string;
-  serviceStatus: "0" | "1";
+  serviceStatus: "0" | "1" | "2" | "3" | "4";
   maxConcurrentCount: string;
   priorityLevel: string;
   autoAssignEnabled: boolean;
@@ -94,7 +96,7 @@ function createEditFormSchema(t: TFunction) {
   agentCode: z.string().trim().min(1, t("agentProfile.agentCodeRequired")),
   displayName: z.string().trim().min(1, t("agentProfile.displayNameRequired")),
   avatar: z.string().trim(),
-  serviceStatus: z.enum(["0", "1"], {
+  serviceStatus: z.enum(["0", "1", "2", "3", "4"], {
     message: t("agentProfile.statusRequired"),
   }),
   maxConcurrentCount: z
@@ -112,10 +114,7 @@ function createEditFormSchema(t: TFunction) {
 }
 
 function getServiceStatusOptions(t: TFunction) {
-  return [
-    { value: String(ServiceStatus.Idle), label: t("agentProfile.statusIdle") },
-    { value: String(ServiceStatus.Busy), label: t("agentProfile.statusBusy") },
-  ];
+  return availabilityStatusOptions(t, false);
 }
 
 function buildForm(item: AdminAgentProfile | null): EditForm {
@@ -529,7 +528,7 @@ function AgentEditDialogBody({
           </div>
 
           <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
-            <Field data-invalid={!!errors.serviceStatus}>
+            {!itemId ? <Field data-invalid={!!errors.serviceStatus}>
               <FieldLabel>{t("agentProfile.serviceStatus")}</FieldLabel>
               <FieldContent>
                 <Controller
@@ -548,7 +547,7 @@ function AgentEditDialogBody({
                 />
                 <FieldError errors={[errors.serviceStatus]} />
               </FieldContent>
-            </Field>
+            </Field> : <p className="text-sm text-muted-foreground">{t("supportAvailability.statusSeparate")}</p>}
 
             <Field className="min-h-32">
               <FieldLabel>{t("agentProfile.avatar")}</FieldLabel>
@@ -625,10 +624,12 @@ function AgentEditDialogBody({
                   render={({ field }) => (
                     <Switch
                       checked={field.value}
+                      disabled
                       onCheckedChange={field.onChange}
                     />
                   )}
                 />
+                <p className="text-xs text-muted-foreground">{t("supportAvailability.offlineDeprecated")}</p>
               </FieldContent>
             </Field>
           </div>