fix: resolve apiProxy via ctx.get for /model (v0.3.2)

Cordis throws on ctx.apiProxy without inject; use ctx.get and declare apiProxy inject so catalog and model APIs work under dsh web.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/bridge.js

@@ -363,7 +363,8 @@ export class TelegramBridge {
         }
         catch (err) {
             this.ctx.logger.warn(`dsh-telegram-channel: /model failed: ${this.redact(err)}`);
-            await this.client.sendMessage(chatId, MSG.MODEL_UNAVAILABLE);
+            const detail = err instanceof Error ? err.message : String(err);
+            await this.client.sendMessage(chatId, MSG.MODEL_UNAVAILABLE(detail));
         }
     }
     async sendEffortPicker(chatId, option) {