feat: separate Ollama text/image/think models + add YouTube downloader

Support OLLAMA_IMAGE_MODEL and new OLLAMA_THINK_MODEL (both default to OLLAMA_MODEL)

Add /ollamathink command; validate thinking capability; disable image-analysis flow in think mode

Make /ollama-get-model show Text/Image/Think blocks only when models differ

Add /ytdl (/youtube) command + auto-detect YouTube URLs in messages

Cache downloaded videos to data/video and schedule daily cleanup

Move photo storage from data/temp to data/photo; improve env boolean parsing via ifTrue

Update deps (youtubei.js, puppeteer*) and TS config (allowJs, allowSyntheticDefaultImports)

src/commands/youtube-download.ts

@@ -0,0 +1,54 @@
+import {ChatCommand} from "../base/chat-command";
+import {Message} from "typescript-telegram-bot-api";
+import {logError, replyToMessage} from "../util/utils";
+import {bot} from "../index";
+import {downloadVideoFromYouTube} from "../util/ytdl";
+
+export class YouTubeDownload extends ChatCommand {
+    command = ["ytdl", "youtube"];
+    argsMode = "required" as const;
+
+    async execute(msg: Message, match?: RegExpExecArray): Promise<void> {
+        const url = match?.[3];
+        return this.downloadYouTubeVideo(msg, url);
+    }
+
+    async downloadYouTubeVideo(msg: Message, url: string): Promise<void> {
+        let waitMessage: Message | null = null;
+
+        try {
+            waitMessage = await replyToMessage({message: msg, text: "⏳ Секунду..."});
+
+            const {time, exists, buffer} = await downloadVideoFromYouTube(url);
+            if (buffer) {
+                const start = Date.now();
+                waitMessage = await bot.editMessageMedia({
+                    chat_id: msg.chat.id,
+                    message_id: waitMessage.message_id,
+                    media: {
+                        type: "video",
+                        media: buffer
+                    }
+                }) as Message;
+
+                const diff = Date.now() - start;
+                waitMessage = await bot.editMessageCaption({
+                    chat_id: msg.chat.id,
+                    message_id: waitMessage.message_id,
+                    caption: `✅ [Видео](${url})` + (exists ? " загружено из кэша" : " успешно скачано") + " за " + (time + diff) + "мс",
+                    parse_mode: "MarkdownV2"
+                }) as Message;
+            }
+        } catch (e) {
+            logError(e);
+
+            if (waitMessage && "text" in waitMessage) {
+                await bot.editMessageText({
+                    chat_id: msg.chat.id,
+                    message_id: waitMessage.message_id,
+                    text: `⚠️ Произошла ошибка.\n${e}`,
+                });
+            }
+        }
+    }
+}