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

django_code/core/settings.py

@@ -47,6 +47,7 @@ INSTALLED_APPS = [
     'apps.random_simpsons.apps.RandomSimpsonsConfig',
     'apps.website_redirection.apps.redirectConfig',
     'apps.job_dashboard.apps.JobDashboardConfig',
+    'apps.telegram_communication.apps.TelegramCommunicationConfig',
     'import_export',
 ]
 
@@ -133,6 +134,14 @@ DATABASES = {
         'HOST': os.environ.get('DB_HOST'),
         'PORT': os.environ.get('DB_PORT'),
     },
+    'telegram_db': {
+        'ENGINE': 'django.db.backends.postgresql',
+        'NAME': 'telegram',
+        'USER': os.environ.get('DB_USERNAME'),
+        'PASSWORD': os.environ.get('DB_PASSWORD'),
+        'HOST': os.environ.get('DB_HOST'),
+        'PORT': os.environ.get('DB_PORT'),
+    },
 }
 DATABASE_ROUTERS = ['core.routers.ProjectDatabaseRouter']
 #DATABASE_ROUTERS = []