Add ad support to config.py and fix \\n handling in replies

config.py

@@ -33,6 +33,8 @@ class Config:
                     else:
                         options = [line]
 
+                    # Convert literal \n to actual newlines
+                    options = [opt.replace("\\n", "\n") for opt in options]
                     reply_lines.append(options)
 
             return reply_lines if reply_lines else default_replies
@@ -40,6 +42,19 @@ class Config:
         except FileNotFoundError:
             return default_replies
 
+    def _load_ads(self, file_path: str = "storage/ads.txt"):
+        """Load ads from file, one ad per file (can be multi-line)"""
+        try:
+            with open(file_path, "r", encoding="utf-8") as f:
+                ad_content = f.read().strip()
+                if ad_content:
+                    # Convert literal \n to actual newlines
+                    return ad_content.replace("\\n", "\n")
+                return None
+        except FileNotFoundError:
+            logger.warning(f"Ad file {file_path} not found")
+            return None
+
     def _load_captcha(self, file_path: str = "storage/captcha.txt"):
         default_captcha = (
             f"[CENTER][B]Напишите ответ:[/B]\n"
@@ -138,6 +153,14 @@ class Config:
                     "ENABLE_CAPTCHA установлен, но CAPTCHA_ANSWER не задан"
                 )
 
+            # Ads
+            enable_ads = (
+                os.getenv(key="ENABLE_ADS", default="false")
+            ).lower() == "true"
+            ads_probability = max(
+                0.0, min(1.0, float(os.getenv(key="ADS_PROBABILITY", default=0.3)))
+            )  # Clamp between 0.0 and 1.0
+
             proxy_telegram = (
                 os.getenv(key="PROXY_TELEGRAM", default="false")
             ).lower() == "true"
@@ -296,6 +319,9 @@ class Config:
                 "enable_captcha": enable_captcha,
                 "captcha_answer": captcha_answer,
                 "captcha_check_interval": captcha_check_interval,
+                # Ads
+                "enable_ads": enable_ads,
+                "ads_probability": ads_probability,
                 # Proxy
                 "proxy_telegram": proxy_telegram,
                 "proxy_lolz": proxy_lolz,