feat: add Russian localization and independent STT languages

components/home.tsx

@@ -1,4 +1,6 @@
 "use client";
+import { useI18n } from "@/components/i18n";
+
 
 import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { useRouter } from "next/navigation";
@@ -30,6 +32,7 @@ export function Home({
 	 * changing the setting applies on the next visit home. */
 	rendering?: boolean;
 }) {
+	const { t } = useI18n();
 	const router = useRouter();
 	const [topic, setTopic] = useState("");
 	/* The topic MIRROR ("nothing gets lost" round, 2026-10-01 — same
@@ -236,8 +239,7 @@ export function Home({
 									onClick={() => setSetupOpen(true)}
 									className="rounded-sm border border-border bg-card px-3 py-1.5 font-ui text-xs text-foreground transition-colors hover:border-muted-foreground/50 hover:bg-accent cursor-pointer"
 								>
-									Set up your models
-								</button>
+									{t("Set up your models")}</button>
 							)
 						)}
 					/>
@@ -270,7 +272,7 @@ export function Home({
 								void start();
 							}
 						}}
-						placeholder={mode === "practice" ? "What do you want to practice?" : "What do you want to learn?"}
+						placeholder={mode === "practice" ? t("What do you want to practice?") : t("What do you want to learn?")}
 						autoFocus
 						rows={1}
 						className="field-sizing-content lh-input max-h-48 min-h-10 flex-1 resize-none bg-transparent px-2.5 py-2 outline-none placeholder:text-muted-foreground"
@@ -279,7 +281,7 @@ export function Home({
 					    affordance (owner, subtlety round 2026-09-25). */}
 					<button
 						type="submit"
-						aria-label="Start session"
+						aria-label={t("Start session")}
 						disabled={(!topic.trim() && !dictation.active) || busy}
 						className="flex size-10 shrink-0 items-center justify-center rounded-[10px] bg-primary text-primary-foreground transition-colors hover:opacity-90 disabled:opacity-40"
 					>
@@ -309,7 +311,7 @@ export function Home({
 										}
 									>
 										{m === "practice" ? <DumbbellIcon aria-hidden="true" className="size-3" /> : null}
-										{m === "teach" ? "Teach" : "Practice"}
+										{m === "teach" ? t("Teach") : t("Practice")}
 									</button>
 								))}
 							</div>