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/knowledge/_components/debug-panel.tsx

@@ -1,3 +1,4 @@
+// Modified in the independent AgentDesk fork: localized knowledge workflows and safe display errors.
 "use client";
 
 import { useState } from "react";
@@ -145,7 +146,7 @@ export function DebugPanel({ knowledgeBaseId }: DebugPanelProps) {
                     {getKnowledgeAnswerStatusLabel(answerResult.answerStatus, answerResult.answerStatusName, t)}
                   </Badge>
                   <span className="text-xs text-muted-foreground">
-                    {answerResult.latencyMs}ms · {answerResult.modelName || "fallback"}
+                    {answerResult.latencyMs}ms · {answerResult.modelName || t("knowledge.answerFallback")}
                   </span>
                 </div>
                 <div className="rounded-md border bg-background p-3 whitespace-pre-wrap">
@@ -161,12 +162,12 @@ export function DebugPanel({ knowledgeBaseId }: DebugPanelProps) {
                       >
                         <div className="flex items-center justify-between gap-2">
                           <div className="truncate text-xs font-medium">
-                            {getSearchResultLabel(citation)}
+                            {getSearchResultLabel(citation, t)}
                           </div>
                           <Badge variant="outline">{citation.score.toFixed(4)}</Badge>
                         </div>
                         <div className="mt-1 text-xs text-muted-foreground">
-                          {citation.sectionPath || citation.title || `Chunk #${citation.chunkNo}`}
+                          {citation.sectionPath || citation.title || t("knowledge.chunkNumber", { number: citation.chunkNo })}
                         </div>
                         <div className="mt-2 text-xs leading-5 text-muted-foreground whitespace-pre-wrap">
                           {citation.snippet}
@@ -192,12 +193,12 @@ export function DebugPanel({ knowledgeBaseId }: DebugPanelProps) {
                   <div key={`${item.chunkId}-${item.documentId}`} className="rounded-md border bg-background p-3">
                     <div className="flex items-center justify-between gap-2">
                       <div className="truncate text-sm font-medium">
-                        {getSearchResultLabel(item)}
+                        {getSearchResultLabel(item, t)}
                       </div>
                       <Badge variant="outline">{item.score.toFixed(4)}</Badge>
                     </div>
                     <div className="mt-1 text-xs text-muted-foreground">
-                      {item.sectionPath || item.title || `Chunk #${item.chunkNo}`}
+                      {item.sectionPath || item.title || t("knowledge.chunkNumber", { number: item.chunkNo })}
                     </div>
                     <div className="mt-2 text-xs leading-5 text-muted-foreground whitespace-pre-wrap">
                       {item.content}
@@ -218,7 +219,7 @@ function getSearchResultLabel(item: {
   faqId?: number
   documentTitle?: string
   documentId?: number
-}) {
+}, t: (key: string, values?: Record<string, string | number>) => string) {
   if (item.faqQuestion) {
     return item.faqQuestion
   }
@@ -226,7 +227,7 @@ function getSearchResultLabel(item: {
     return item.documentTitle
   }
   if (item.faqId && item.faqId > 0) {
-    return `FAQ ${item.faqId}`
+    return t("knowledge.faqNumber", { number: item.faqId })
   }
-  return `Document ${item.documentId ?? 0}`
+  return t("knowledge.documentNumber", { number: item.documentId ?? 0 })
 }