refactor(bot): centralize runtime state; support albums + safer vision handling

- make MessageStore.put() return StoredMessage and allow collectReplyChainText() to work with StoredMessage
- move muted users + answers loading into Environment (add Answers model + GEMINI_IMAGE_MODEL)
- extract message handling into processNewMessage() and add media-group (album) caching/downloading by unique_file_id
- for Ollama: check model capabilities before sending images; use replyToMessage helper consistently
- add /geminiGenImage command stub for Gemini image generation

src/commands/ollama-get-model.ts

@@ -3,6 +3,7 @@ import {Message} from "typescript-telegram-bot-api";
 import {boolToEmoji, logError, replyToMessage} from "../util/utils";
 import {Environment} from "../common/environment";
 import {ollama} from "../index";
+import {ShowResponse} from "ollama";
 
 export class OllamaGetModel extends ChatCommand {
     title = "/ollamaGetModel";
@@ -10,7 +11,7 @@ export class OllamaGetModel extends ChatCommand {
 
     async execute(msg: Message): Promise<void> {
         try {
-            const showResponse = await ollama.show({model: Environment.OLLAMA_MODEL});
+            const showResponse = await this.loadModelInfo();
 
             const caps = showResponse.capabilities;
 
@@ -27,4 +28,8 @@ export class OllamaGetModel extends ChatCommand {
             await replyToMessage({message: msg, text: e.toString()}).catch(logError);
         }
     }
+
+    async loadModelInfo(): Promise<ShowResponse | null> {
+        return ollama.show({model: Environment.OLLAMA_MODEL});
+    }
 }