Add telegram_communication app with dedicated DB routing

- Register TelegramCommunicationConfig in INSTALLED_APPS and add telegram_db to DATABASES
- Define TelegramData model mapped to the messages table
- Fix allow_migrate in ProjectDatabaseRouter: redirect and telegram entries were returning the DB name string (always truthy) instead of a boolean comparison, causing their migrations to bleed into every database
- Add telegram routing to db_for_read, db_for_write, allow_relation, and allow_migrate

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

django_code/core/routers.py

@@ -16,6 +16,8 @@ class ProjectDatabaseRouter:
             return 'redirect_db'
         if model._meta.app_label == 'cloudmanager':
             return 'cloudmanager_db'
+        if model._meta.app_label == 'telegram':
+            return 'telegram_db'
         return 'default'
 
     def db_for_write(self, model, **hints):
@@ -28,14 +30,16 @@ class ProjectDatabaseRouter:
             return 'cloudmanager_db'
         if model._meta.app_label == 'redirect':
             return 'redirect_db'
+        if model._meta.app_label == 'telegram':
+            return 'telegram_db'
         return 'default'
 
     def allow_relation(self, obj1, obj2, **hints):
         """Allow relations if both models are in the same database."""
         # Prevents accidental foreign key relationships across different physical DBs
         if (
-                obj1._meta.app_label in ['simpsons', 'cloudmanager','redirect','job'] or
-                obj2._meta.app_label in ['simpsons', 'cloudmanager','redirect','job']
+                obj1._meta.app_label in ['simpsons', 'cloudmanager','redirect','job','telegram'] or
+                obj2._meta.app_label in ['simpsons', 'cloudmanager','redirect','job','telegram']
         ):
             return obj1._meta.app_label == obj2._meta.app_label
         return None
@@ -49,9 +53,11 @@ class ProjectDatabaseRouter:
         if app_label == 'cloudmanager':
             return db == 'cloudmanager_db'
         if app_label == 'redirect':
-            return 'redirect_db'
+            return db == 'redirect_db'
+        if app_label == 'telegram':
+            return db == 'telegram_db'
         # Ensure default Django apps (auth, sessions, etc.) don't migrate into simpsons/cloudmanager
-        if db in ['simpsons_db', 'cloudmanager_db','redirect_db','job_db']:
+        if db in ['simpsons_db', 'cloudmanager_db','redirect_db','job_db','telegram_db']:
             return False
 
         return None