feat: update SearxNG settings for enhanced search engine management

- Removed specific engines (ahmia, torch, qwant, mojeek) from default settings.
- Added new configuration options for search engine failure handling, including ban times and retries.
- Introduced additional search engines (bing, yahoo, stackoverflow) with retry logic for HTTP errors.
- Updated request timeout settings for outgoing requests to improve performance.

docker/searxng/settings.yml

@@ -1,4 +1,10 @@
-use_default_settings: true
+use_default_settings:
+  engines:
+    remove:
+      - ahmia
+      - torch
+      - qwant
+      - mojeek
 
 server:
   secret_key: "override-me-via-env"
@@ -15,33 +21,61 @@ search:
   default_lang: "auto"
   autocomplete: ""
   safe_search: 0
+  ban_time_on_fail: 5
+  max_ban_time_on_fail: 120
+  suspended_times:
+    SearxEngineAccessDenied: 3600
+    SearxEngineCaptcha: 3600
+    SearxEngineTooManyRequests: 600
+    cf_SearxEngineCaptcha: 7200
+    cf_SearxEngineAccessDenied: 3600
+    recaptcha_SearxEngineCaptcha: 7200
 
 ui:
   static_use_hash: true
 
 outgoing:
   request_timeout: 12.0
+  max_request_timeout: 20.0
   pool_connections: 100
   pool_maxsize: 20
   enable_http2: true
+  extra_proxy_timeout: 10.0
+  retries: 1
+  # Uncomment and set your residential proxy URL to route search engine requests through it.
+  # Format: http://<username>:<base64_password>@<hostname>:<port>/
+  #
+  # proxies:
+  #   all://:
+  #     - http://user:pass@proxy-host:port/
 
 engines:
   - name: google
     disabled: false
     weight: 1.2
+    retry_on_http_error: [429, 503]
   - name: duckduckgo
     disabled: false
     weight: 1.1
+    retry_on_http_error: [429, 503]
   - name: brave
     disabled: false
     weight: 1.0
-  - name: qwant
-    disabled: true
-  - name: mojeek
-    disabled: true
+    retry_on_http_error: [429, 503]
+  - name: bing
+    disabled: false
+    weight: 0.9
+    retry_on_http_error: [429, 503]
   - name: wikipedia
     disabled: false
     weight: 0.8
+  - name: stackoverflow
+    disabled: false
+    weight: 0.7
+  - name: yahoo
+    disabled: false
+    weight: 0.7
+    retry_on_http_error: [429, 503]
   - name: wikidata
     disabled: false
     weight: 0.6
@@ -49,10 +83,3 @@ engines:
     disabled: false
   - name: ddg definitions
     disabled: false
-  - name: stackoverflow
-    disabled: false
-    weight: 0.7
-  - name: bing
-    disabled: true
-  - name: yahoo
-    disabled: true