feat: add SearXNG configuration for web search tool

- Add SEARXNG_HOST config with localhost:8087 default
- Add SEARXNG_TIMEOUT setting (30 seconds default)
- Update .env.example with SearXNG configuration
- Supports both local and production SearXNG instances

.env.example

@@ -14,6 +14,10 @@ OLLAMA_HOST=http://your-ollama-host:11434
 OLLAMA_DEFAULT_MODEL=mistral-nemo:latest
 OLLAMA_TIMEOUT=120
 
+# SearXNG Configuration
+SEARXNG_HOST=http://searxng:8087
+SEARXNG_TIMEOUT=30
+
 # Logging
 LOG_LEVEL=INFO
 

src/core/config.py

@@ -32,7 +32,7 @@ class Config(BaseSettings):
     
     # Application
     APP_NAME: str = "OpenAI-Compatible API"
-    APP_VERSION: str = "0.1.1"
+    APP_VERSION: str = "0.2.0"
     ENVIRONMENT: Environment = Environment.DEVELOPMENT
     DEBUG: bool = Field(default=False, description="Debug mode")
     
@@ -59,6 +59,16 @@ class Config(BaseSettings):
         description="Timeout for each streaming turn in seconds"
     )
 
+    # SearXNG Configuration
+    SEARXNG_HOST: HttpUrl = Field(
+        default="http://localhost:8087",
+        description="SearXNG server URL"
+    )
+    SEARXNG_TIMEOUT: int = Field(
+        default=30,
+        description="SearXNG request timeout in seconds"
+    )
+
     # Logging
     LOG_LEVEL: str = Field(default="INFO", description="Logging level")