🔧 FIX: Disable Telegram notifications until secrets configured

- Added fallback values for TELEGRAM_CHAT_ID
- Temporarily disabled notifications to prevent 400 Bad Request errors
- CI/CD pipeline will complete successfully without notification failures

To enable notifications:
1. Add 'telegram_webhook_url' secret in Drone
2. Add 'telegram_chat_id' secret in Drone
3. Remove 'event: exclude' conditions from notify steps

Main CI/CD functionality remains intact!

.drone.yml

@@ -149,7 +149,7 @@ steps:
       content_type: application/json
       template: |
         {
-          "chat_id": "${TELEGRAM_CHAT_ID}",
+          "chat_id": "${TELEGRAM_CHAT_ID:-@smartsoltech_ci}",
           "text": "✅ *SmartSolTech CI/CD*\n\nBuild completed successfully!\n\n📝 *Commit:* `${DRONE_COMMIT_SHA:0:8}`\n👤 *Author:* ${DRONE_COMMIT_AUTHOR}\n🌿 *Branch:* ${DRONE_BRANCH}\n⏱ *Time:* ${DRONE_BUILD_FINISHED}\n\n🔗 [Details](${DRONE_BUILD_LINK})",
           "parse_mode": "Markdown"
         }
@@ -159,6 +159,10 @@ steps:
     when:
       status:
         - success
+      # Отключаем до настройки секретов
+      event:
+        exclude:
+        - '*'
     depends_on:
       - security-scan
 
@@ -170,7 +174,7 @@ steps:
       content_type: application/json
       template: |
         {
-          "chat_id": "${TELEGRAM_CHAT_ID}",
+          "chat_id": "${TELEGRAM_CHAT_ID:-@smartsoltech_ci}",
           "text": "❌ *SmartSolTech CI/CD*\n\nBuild failed!\n\n📝 *Commit:* `${DRONE_COMMIT_SHA:0:8}`\n👤 *Author:* ${DRONE_COMMIT_AUTHOR}\n🌿 *Branch:* ${DRONE_BRANCH}\n⏱ *Time:* ${DRONE_BUILD_FINISHED}\n\n🔗 [Logs](${DRONE_BUILD_LINK})",
           "parse_mode": "Markdown"
         }
@@ -180,6 +184,10 @@ steps:
     when:
       status:
         - failure
+      # Отключаем до настройки секретов
+      event:
+        exclude:
+        - '*'
     depends_on:
       - security-scan