feat(i18n,rtl): full Arabic localization + RTL sweep across all layouts

Frontend
- i18n: install tailwindcss-rtl, Cairo font, RTL-aware direction in index.css.
- Language toggle: localize aria-label / menu label, persist choice, update
  document dir synchronously.
- Sidebar: add `side` prop so the drawer pins to the right in RTL; wire up
  AdminLmsLayout, RoleLayout (student/teacher) and AppSidebar to pass
  side = i18n.dir() === 'rtl' ? 'right' : 'left'.
- AdminLmsLayout: convert every nav item from hard-coded title to titleKey,
  translate group labels (incl. the collapsible Training), breadcrumbs,
  user menu (Profile / Settings / Logout), help button and toggle aria
  labels; replace physical mr-/right- utilities with logical me-/end-.
- AI components (AiTipBanner, AiInsightsPanel, AiAlertBanner, AiSearchBar,
  AiAssistantDrawer): apply dir="auto" at the container level, localize
  titles, loading / error / empty states.
- Dashboards (admin / student / teacher): wrap numeric values in <bdi>,
  localize dates via ar-EG, fix flex direction for KPI and assignment cards.
- UI primitives (breadcrumb, calendar, carousel, dropdown-menu, menubar,
  context-menu, pagination, sidebar): flip chevrons in RTL via a scoped
  CSS rule, swap pl-/pr-/ml-/mr- for ps-/pe-/ms-/me-.
- Add logical-direction helpers and bidirectional isolation classes.

Locales
- Expand en.ts and ar.ts with full `nav`, `sidebarGroup`, `breadcrumb`,
  `userMenu`, `chrome`, `ai`, and dashboard key sets; keep key parity.

API client
- `api-client.ts` reads the active language from localStorage/i18n and sends
  `Accept-Language` on every request so the backend can localize AI output.

Backend (encoach_ai)
- openai_service: add _LANGUAGE_NAMES, normalize_language, language-aware
  system prompt injection for every OpenAI call.
- coach_service + controllers (coach_controller, ai_controller): thread
  the requested language from headers / user locale down to OpenAIService.
- ai_feedback: fix latent registry error by pointing course_id at op.course
  instead of the non-existent encoach.course.

Other
- .gitignore: ignore runtime odoo logs and local caches.

Made-with: Cursor

src/components/ai/AiSearchBar.tsx

@@ -1,5 +1,6 @@
 import { useState } from "react";
 import { useMutation } from "@tanstack/react-query";
+import { useTranslation } from "react-i18next";
 import { Input } from "@/components/ui/input";
 import { Sparkles, Search, Loader2, X } from "lucide-react";
 import { useNavigate } from "react-router-dom";
@@ -10,14 +11,15 @@ export default function AiSearchBar() {
   const [query, setQuery] = useState("");
   const navigate = useNavigate();
   const { toast } = useToast();
+  const { t } = useTranslation();
 
   const searchMutation = useMutation({
     mutationFn: (q: string) => analyticsService.search(q),
     onError: (err: Error) => {
       toast({
         variant: "destructive",
-        title: "Search failed",
-        description: err.message || "Could not complete AI search.",
+        title: t("chrome.aiSearchFailedTitle"),
+        description: err.message || t("chrome.aiSearchFailedDesc"),
       });
     },
   });
@@ -32,11 +34,11 @@ export default function AiSearchBar() {
   return (
     <div className="relative max-w-md w-full">
       <div className="relative">
-        <Sparkles className="absolute left-3 top-1/2 -translate-y-1/2 h-3.5 w-3.5 text-primary" />
-        <Search className="absolute left-7 top-1/2 -translate-y-1/2 h-3.5 w-3.5 text-muted-foreground" />
+        <Sparkles className="absolute start-3 top-1/2 -translate-y-1/2 h-3.5 w-3.5 text-primary" />
+        <Search className="absolute start-7 top-1/2 -translate-y-1/2 h-3.5 w-3.5 text-muted-foreground" />
         <Input
-          placeholder="Ask anything... e.g. 'Show students with low attendance'"
-          className="pl-12 pr-8 h-9 text-sm bg-muted/50 border-0 focus-visible:ring-1"
+          placeholder={t("chrome.aiSearchPlaceholder")}
+          className="ps-12 pe-8 h-9 text-sm bg-muted/50 border-0 focus-visible:ring-1"
           value={query}
           onChange={(e) => {
             setQuery(e.target.value);
@@ -50,7 +52,7 @@ export default function AiSearchBar() {
               setQuery("");
               searchMutation.reset();
             }}
-            className="absolute right-3 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground"
+            className="absolute end-3 top-1/2 -translate-y-1/2 text-muted-foreground hover:text-foreground"
           >
             <X className="h-3.5 w-3.5" />
           </button>
@@ -58,11 +60,11 @@ export default function AiSearchBar() {
       </div>
 
       {(searchMutation.isPending || result !== undefined) && (
-        <div className="absolute top-full mt-1 left-0 right-0 z-50 rounded-lg border bg-popover p-3 shadow-md">
+        <div className="absolute top-full mt-1 start-0 end-0 z-50 rounded-lg border bg-popover p-3 shadow-md">
           {searchMutation.isPending ? (
             <div className="flex items-center gap-2 text-sm text-muted-foreground">
               <Loader2 className="h-4 w-4 animate-spin text-primary" />
-              AI is searching...
+              {t("chrome.aiSearching")}
             </div>
           ) : result?.answer ? (
             <div className="text-sm space-y-2 max-h-64 overflow-y-auto">
@@ -72,7 +74,7 @@ export default function AiSearchBar() {
               </div>
               {result.suggestions?.length > 0 && (
                 <div className="border-t pt-2 space-y-1">
-                  <p className="text-xs font-semibold text-primary">Related queries</p>
+                  <p className="text-xs font-semibold text-primary">{t("chrome.aiRelatedQueries")}</p>
                   {result.suggestions.map((s, i) => (
                     <button
                       key={i}
@@ -99,9 +101,7 @@ export default function AiSearchBar() {
           ) : (
             <div className="text-sm flex items-start gap-2">
               <Sparkles className="h-4 w-4 text-primary shrink-0 mt-0.5" />
-              <p>
-                No results for &quot;{query}&quot;. Try a different question or keyword.
-              </p>
+              <p>{t("chrome.aiNoResults", { q: query })}</p>
             </div>
           )}
         </div>