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>

src/bridge.ts

@@ -432,7 +432,8 @@ export class TelegramBridge {
       await this.client.sendMessage(chatId, body, undefined, keyboard)
     } 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))
     }
   }