[mod] client/simple: client plugins (#5406)

* [mod] client/simple: client plugins

Defines a new interface for client side *"plugins"* that coexist with server
side plugin system. Each plugin (e.g., `InfiniteScroll`) extends the base
`ts Plugin`. Client side plugins are independent and lazy‑loaded via `router.ts`
when their `load()` conditions are met. On each navigation request, all
applicable plugins are instanced.

Since these are client side plugins, we can only invoke them once DOM is fully
loaded. E.g. `Calculator` will not render a new `answer` block until fully
loaded and executed.

For some plugins, we might want to handle its availability in `settings.yml`
and toggle in UI, like we do for server side plugins. In that case, we extend
`py Plugin` instancing only the information and then checking client side if
[`settings.plugins`](https://github.com/inetol/searxng/blob/1ad832b1dc33f3f388da361ff2459b05dc86a164/client/simple/src/js/toolkit.ts#L134)
array has the plugin id.

* [mod] client/simple: rebuild static

4 files changed, 4 insertions, 23 deletions

diff --git a/searx/templates/simple/base.html b/searx/templates/simple/base.html
index c8e75b713..ec2c7bb51 100644
--- a/searx/templates/simple/base.html
+++ b/searx/templates/simple/base.html
@@ -10,12 +10,12 @@
   <meta name="robots" content="noarchive">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <title>{% block title %}{% endblock %}{{ instance_name }}</title>
-  <script type="module" src="{{ url_for('static', filename='js/searxng.core.min.js') }}" client_settings="{{ client_settings }}"></script>
+  <script type="module" src="{{ url_for('static', filename='sxng-core.min.js') }}" client_settings="{{ client_settings }}"></script>
   {% block meta %}{% endblock %}
   {% if rtl %}
-  <link rel="stylesheet" href="{{ url_for('static', filename='css/searxng-rtl.min.css') }}" type="text/css" media="screen">
+  <link rel="stylesheet" href="{{ url_for('static', filename='sxng-rtl.min.css') }}" type="text/css" media="screen">
   {% else %}
-  <link rel="stylesheet" href="{{ url_for('static', filename='css/searxng-ltr.min.css') }}" type="text/css" media="screen">
+  <link rel="stylesheet" href="{{ url_for('static', filename='sxng-ltr.min.css') }}" type="text/css" media="screen">
   {% endif %}
   {% if get_setting('server.limiter') or get_setting('server.public_instance') %}
   <link rel="stylesheet" href="{{ url_for('client_token', token=link_token) }}" type="text/css">
diff --git a/searx/templates/simple/preferences.html b/searx/templates/simple/preferences.html
index 87bd99c45..ca3a3f087 100644
--- a/searx/templates/simple/preferences.html
+++ b/searx/templates/simple/preferences.html
@@ -211,9 +211,6 @@
     {%- if 'results_on_new_tab' not in locked_preferences -%}
       {%- include 'simple/preferences/results_on_new_tab.html' -%}
     {%- endif -%}
-    {%- if 'infinite_scroll' not in locked_preferences -%}
-      {%- include 'simple/preferences/infinite_scroll.html' -%}
-    {%- endif -%}
     {%- if 'search_on_category_select' not in locked_preferences -%}
       {%- include 'simple/preferences/search_on_category_select.html' -%}
     {%- endif -%}
diff --git a/searx/templates/simple/preferences/infinite_scroll.html b/searx/templates/simple/preferences/infinite_scroll.html
deleted file mode 100644
index f5bcf1c95..000000000
--- a/searx/templates/simple/preferences/infinite_scroll.html
+++ /dev/null
@@ -1,16 +0,0 @@
-<fieldset>{{- '' -}}
-  <legend>{{ _('Infinite scroll') }}</legend>{{- '' -}}
-  <p class="value">{{- '' -}}
-    <input type="checkbox" {{- ' ' -}}
-           name="infinite_scroll" {{- ' ' -}}
-           aria-labelledby="pref_infinite_scroll" {{- ' ' -}}
-           class="checkbox-onoff" {{- ' ' -}}
-           {%- if preferences.get_value('infinite_scroll') -%}
-             checked
-           {%- endif -%}{{- ' ' -}}
-           >{{- '' -}}
-  </p>{{- '' -}}
-  <div class="description" id="pref_infinite_scroll">
-    {{- _('Automatically load the next page when scrolling to the bottom of the current page') -}}
-  </div>{{- '' -}}
-</fieldset>{{- '' -}}
diff --git a/searx/templates/simple/rss.xsl b/searx/templates/simple/rss.xsl
index a3b646ae3..7cfeedc01 100644
--- a/searx/templates/simple/rss.xsl
+++ b/searx/templates/simple/rss.xsl
@@ -8,7 +8,7 @@
         <meta charset="UTF-8" />
         <meta http-equiv="x-ua-compatible" content="IE=edge,chrome=1" />
         <meta name="viewport" content="width=device-width,initial-scale=1" />
-	<link rel="stylesheet" href="{{ url_for('static', filename='css/rss.min.css') }}" type="text/css" media="screen"/>
+	<link rel="stylesheet" href="{{ url_for('static', filename='sxng-rss.min.css') }}" type="text/css" media="screen"/>
       </head>
       <body>
         <header>