feat(settings): add timeout_limit and configure engine weights and timeouts

BREAKING CHANGE: timeout_limit added to search section and engine configurations updated with weights and timeouts

searxng/settings.yml

@@ -10,6 +10,7 @@ search:
   safe_search: 0
   autocomplete: "google"
   default_lang: "en"
+  timeout_limit: 5.0  # wait up to 5s total; fast engines respond sooner
   formats:
     - html
     - json
@@ -22,34 +23,125 @@ server:
 
 ui:
   static_use_hash: true
+  results_on_new_tab: false
+  theme_args:
+    simple_style: auto  # respects system dark/light mode
 
 engines:
+  # --- General Web (higher weight = results ranked higher in merged list) ---
   - name: google
     engine: google
     shortcut: g
     language: en
     region: en-US
-
-  - name: duckduckgo
-    engine: duckduckgo
-    shortcut: ddg
+    weight: 2.0      # best index quality
+    timeout: 4.0
 
   - name: brave
     engine: brave
     shortcut: br
+    weight: 1.5      # independent index, good quality
+    timeout: 3.0
 
+  - name: duckduckgo
+    engine: duckduckgo
+    shortcut: ddg
+    weight: 1.5
+    timeout: 3.0
+
+  - name: bing
+    engine: bing
+    shortcut: b
+    weight: 1.5      # large index, complements Google well
+    timeout: 3.0
+
+  - name: startpage
+    engine: startpage
+    shortcut: sp
+    weight: 1.2      # Google results with privacy; adds diversity
+    timeout: 4.0
+
+  - name: qwant
+    engine: qwant
+    shortcut: q
+    weight: 1.0
+    timeout: 3.0
+
+  - name: mojeek
+    engine: mojeek
+    shortcut: mjk
+    weight: 0.8      # smaller independent index; good for diversity
+    timeout: 3.0
+
+  # --- Knowledge / Reference ---
   - name: wikipedia
     engine: wikipedia
     shortcut: wp
+    weight: 1.5
+    timeout: 2.0
 
+  # --- Tech / Code ---
   - name: github
     engine: github
     shortcut: gh
+    categories: [it]
+    weight: 1.5
+    timeout: 3.0
 
   - name: stackoverflow
     engine: stackoverflow
     shortcut: so
+    categories: [it]
+    weight: 1.5
+    timeout: 3.0
 
+  - name: npm
+    engine: npm
+    shortcut: npm
+    categories: [it]
+    weight: 1.2
+    timeout: 2.5
+
+  - name: pypi
+    engine: pypi
+    shortcut: pip
+    categories: [it]
+    weight: 1.2
+    timeout: 2.5
+
+  # --- Academic ---
   - name: arxiv
     engine: arxiv
     shortcut: arx
+    categories: [science]
+    weight: 1.5
+    timeout: 3.0
+
+  - name: semantic scholar
+    engine: semantic scholar
+    shortcut: ss
+    categories: [science]
+    weight: 1.2
+    timeout: 3.5
+
+  # --- Community / News ---
+  - name: reddit
+    engine: reddit
+    shortcut: r
+    categories: [social media]
+    weight: 1.2
+    timeout: 3.0
+
+  - name: hackernews
+    engine: hackernews
+    shortcut: hn
+    categories: [it, news]
+    weight: 1.2
+    timeout: 3.0
+
+  - name: google news
+    engine: google news
+    shortcut: gn
+    categories: [news]
+    weight: 1.5
+    timeout: 3.0