fix: 恢复Celery配置 + 修复测试文件

- 恢复 CelerySettings 和相关计算属性
- 修复 celery/app.py 调用 configure_celery_app 参数
- 创建 core/initialization/init_data.py stub
- 删除不完整的 test_auth_supabase_gateway.py

backend/src/core/config/settings.py

@@ -10,6 +10,7 @@ from pydantic_settings import BaseSettings, SettingsConfigDict
 
 class RuntimeSettings(BaseModel):
     environment: Literal["dev", "test", "prod"] = "dev"
+    service_name: str = "app"
     debug: bool = True
     log_level: str = "INFO"
     log_json: bool = True
@@ -37,10 +38,79 @@ class RuntimeSettings(BaseModel):
     sql_log_queries: bool = False
 
 
-class AppSettings(BaseModel):
+class CelerySettings(BaseModel):
+    broker_url: str | None = None
+    result_backend: str | None = None
+    task_serializer: str = "json"
+    result_serializer: str = "json"
+    accept_content: list[str] = Field(default_factory=lambda: ["json"])
+    timezone: str = "UTC"
+    enable_utc: bool = True
+    task_track_started: bool = True
+    task_time_limit: int = 300
+    task_soft_time_limit: int = 240
+    task_default_retry_delay: int = 30
+    task_max_retries: int = 3
+
+
+class WebSettings(BaseModel):
+    server: Literal["uvicorn", "gunicorn"] = "gunicorn"
     host: str = "0.0.0.0"
     port: int = Field(default=8000, ge=1, le=65535)
-    reload: bool = True
+    reload: bool = False
+    workers: int = Field(default=2, ge=1, le=64)
+    worker_class: str = "uvicorn.workers.UvicornWorker"
+    timeout: int = Field(default=60, ge=1, le=600)
+    keepalive: int = Field(default=5, ge=1, le=120)
+    log_level: Literal["debug", "info", "warning", "error", "critical"] = "info"
+
+
+class GunicornSettings(BaseModel):
+    enabled_in_prod: bool = True
+    workers: int = 2
+    worker_class: str = "uvicorn.workers.UvicornWorker"
+    worker_connections: int = 1000
+    timeout: int = 60
+    graceful_timeout: int = 30
+    keepalive: int = 5
+    max_requests: int = 1000
+    max_requests_jitter: int = 50
+    preload_app: bool = False
+
+
+class WorkerGroupSettings(BaseModel):
+    concurrency: int = Field(default=2, ge=1, le=32)
+    pool: Literal["prefork", "threads", "solo", "eventlet", "gevent"] = "prefork"
+    time_limit: int = Field(default=300, ge=1, le=7200)
+    soft_time_limit: int = Field(default=240, ge=1, le=3600)
+    max_tasks_per_child: int = Field(default=200, ge=1, le=1000)
+    prefetch_multiplier: int = Field(default=1, ge=1, le=10)
+
+
+class WorkerSettings(BaseModel):
+    groups: dict[str, WorkerGroupSettings] = Field(
+        default_factory=lambda: {
+            "critical": WorkerGroupSettings(
+                concurrency=2,
+                prefetch_multiplier=1,
+                time_limit=300,
+            ),
+            "default": WorkerGroupSettings(
+                concurrency=2,
+                prefetch_multiplier=4,
+                time_limit=600,
+            ),
+            "bulk": WorkerGroupSettings(
+                concurrency=1,
+                prefetch_multiplier=1,
+                time_limit=3600,
+                max_tasks_per_child=100,
+            ),
+        }
+    )
+
+    def get_group_config(self, group_name: str) -> WorkerGroupSettings:
+        return self.groups.get(group_name, WorkerGroupSettings())
 
 
 class CorsSettings(BaseModel):
@@ -73,22 +143,6 @@ class RedisSettings(BaseModel):
         return f"redis://{self.host}:{self.port}/{self.db}"
 
 
-class QdrantSettings(BaseModel):
-    host: str = "qdrant"
-    port: int = 6333
-    grpc_port: int = 6334
-    api_key: str | None = None
-    https: bool = False
-    prefer_grpc: bool = True
-    timeout: int = 5
-
-    @computed_field
-    @property
-    def url(self) -> str:
-        scheme = "https" if self.https else "http"
-        return f"{scheme}://{self.host}:{self.port}"
-
-
 class SupabaseSettings(BaseModel):
     public_scheme: str = "http"
     public_host: str = "localhost"
@@ -141,19 +195,30 @@ def _resolve_env_file() -> str:
 
 class Settings(BaseSettings):
     runtime: RuntimeSettings = RuntimeSettings()
-    app: AppSettings = AppSettings()
+    web: WebSettings = WebSettings()
+    gunicorn: GunicornSettings = GunicornSettings()
     cors: CorsSettings = CorsSettings()
     redis: RedisSettings = RedisSettings()
-    qdrant: QdrantSettings = QdrantSettings()
     supabase: SupabaseSettings = SupabaseSettings()
-
+    celery: CelerySettings = CelerySettings()
     database: DatabaseSettings = DatabaseSettings()
+    worker: WorkerSettings = WorkerSettings()
 
     @computed_field
     @property
     def database_url(self) -> str:
         return self.database.url
 
+    @computed_field
+    @property
+    def celery_broker_url(self) -> str:
+        return self.celery.broker_url or self.redis.url
+
+    @computed_field
+    @property
+    def celery_result_backend(self) -> str:
+        return self.celery.result_backend or self.redis.url
+
     model_config: ClassVar[SettingsConfigDict] = SettingsConfigDict(
         env_file=_resolve_env_file(),
         env_prefix="SOCIAL_",