docs(config): update Celery environment variable naming convention

- Replace BROKER_URL and RESULT_BACKEND with REDIS_DB_CELERY_BROKER and REDIS_DB_CELERY_BACKEND in README.md
- Replace BROKER_URL and RESULT_BACKEND with REDIS_DB_CELERY_BROKER and REDIS_DB_CELERY_BACKEND in README_CN.md
- Update api/env.example with new variable names and add deprecation notice
- Add reference to celery-env-bug-report.md documentation explaining why old variable names are avoided
- Prevents environment variable hijacking by Celery CLI when using standard naming conventions

README.md

@@ -226,8 +226,8 @@ REDIS_PORT=6379
 REDIS_DB=1 
 
 # Celery (Using Redis as broker)
-BROKER_URL=redis://127.0.0.1:6379/0
-RESULT_BACKEND=redis://127.0.0.1:6379/0
+REDIS_DB_CELERY_BROKER=1
+REDIS_DB_CELERY_BACKEND=2
 
 # JWT Secret Key (Formation method: openssl rand -hex 32)
 SECRET_KEY=your-secret-key-here

README_CN.md

@@ -201,8 +201,8 @@ REDIS_PORT=6379
 REDIS_DB=1 
 
 # Celery (使用Redis作为broker)
-BROKER_URL=redis://127.0.0.1:6379/0
-RESULT_BACKEND=redis://127.0.0.1:6379/0
+REDIS_DB_CELERY_BROKER=1
+REDIS_DB_CELERY_BACKEND=2
 
 # JWT密钥 (生成方式: openssl rand -hex 32)
 SECRET_KEY=your-secret-key-here

api/env.example

@@ -29,10 +29,10 @@ REDIS_DB=
 REDIS_PASSWORD=password
 
 #celery
-BROKER_URL= 
-RESULT_BACKEND= 
-CELERY_BROKER=
-CELERY_BACKEND=
+# NOTE: 不要使用 BROKER_URL / RESULT_BACKEND / CELERY_BROKER / CELERY_BACKEND，
+#       这些名称会被 Celery CLI 劫持，详见 docs/celery-env-bug-report.md
+REDIS_DB_CELERY_BROKER=
+REDIS_DB_CELERY_BACKEND=
 
 # Memory Cache Regeneration Configuration
 # Interval in hours for regenerating memory insight and user summary cache