Add LLM anti-prompt injection system

Introduces a comprehensive anti-prompt injection system for LLMs, including rule-based and LLM-based detection, user ban/whitelist management, message shielding, and statistics tracking. Adds new modules under src/chat/antipromptinjector, integrates anti-injection checks into the message receive flow, updates configuration and database models, and provides test scripts. Also updates templates and logger aliases to support the new system.

src/config/config.py

@@ -41,7 +41,7 @@ from src.config.official_configs import (
     ExaConfig,
     WebSearchConfig,
     TavilyConfig,
-    PluginsConfig
+    AntiPromptInjectionConfig
 )
 
 from .api_ada_configs import (
@@ -371,6 +371,8 @@ class Config(ConfigBase):
     custom_prompt: CustomPromptConfig
     voice: VoiceConfig
     schedule: ScheduleConfig
+    # 有默认值的字段放在后面
+    anti_prompt_injection: AntiPromptInjectionConfig = field(default_factory=lambda: AntiPromptInjectionConfig())
     video_analysis: VideoAnalysisConfig = field(default_factory=lambda: VideoAnalysisConfig())
     dependency_management: DependencyManagementConfig = field(default_factory=lambda: DependencyManagementConfig())
     exa: ExaConfig = field(default_factory=lambda: ExaConfig())