add assets

assets/404.html

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+---
+layout: page
+title: "404: Page not found"
+permalink: /404.html
+
+redirect_from:
+  - /norobots/
+  - /assets/
+  - /posts/
+---
+
+<div class="lead">
+  <p>{{site.data.locales[site.lang].not_found.statment }}</p>
+</div>

assets/css/style.scss

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+---
+---
+
+/*
+  If the number of TAB files has changed, the following variable is required.
+  And it must be defined before `@import`.
+*/
+$tab-count:{{ site.tabs | size | plus:1 }}; // plus 1 for home tab
+
+@import "{{ site.theme }}";
+
+/* append your custom style below */

assets/feed.xml

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+---
+layout: compress
+permalink: /feed.xml
+# Atom Feed, reference: https://validator.w3.org/feed/docs/atom.html
+---
+
+{% capture source %}
+<feed xmlns="http://www.w3.org/2005/Atom">
+  <id>{{ "/" | absolute_url }}</id>
+  <title>{{ site.title }}</title>
+  <subtitle>{{ site.description }}</subtitle>
+  <updated>{{ site.time | date_to_xmlschema }}</updated>
+  <author>
+    <name>{{ site.social.name }}</name>
+    <uri>{{ "/" | absolute_url }}</uri>
+  </author>
+  <link rel="self" type="application/atom+xml" href="{{ page.url | absolute_url }}"/>
+  <link rel="alternate" type="text/html" hreflang="{{ site.lang }}"
+    href="{{ '/' | absolute_url }}"/>
+  <generator uri="https://jekyllrb.com/" version="{{ jekyll.version }}">Jekyll</generator>
+  <rights> © {{ 'now' | date: '%Y' }} {{ site.social.name }} </rights>
+  <icon>{{ site.baseurl }}/assets/img/favicons/favicon.ico</icon>
+  <logo>{{ site.baseurl }}/assets/img/favicons/favicon-96x96.png</logo>
+
+{% for post in site.posts limit: 5 %}
+  {% assign post_absolute_url = post.url | absolute_url %}
+  <entry>
+    <title>{{ post.title }}</title>
+    <link href="{{ post_absolute_url }}" rel="alternate" type="text/html" title="{{ post.title }}" />
+    <published>{{ post.date | date_to_xmlschema }}</published>
+  {% if post.last_modified_at %}
+    <updated>{{ post.last_modified_at | date_to_xmlschema }}</updated>
+  {% else %}
+    <updated>{{ post.date | date_to_xmlschema }}</updated>
+  {% endif %}
+    <id>{{ post_absolute_url }}</id>
+    <content src="{{ post_absolute_url }}" />
+    <author>
+      <name>{{ post.author | default: site.social.name }}</name>
+    </author>
+
+  {% if post.categories %}
+    {% for category in post.categories %}
+    <category term="{{ category }}" />
+    {% endfor %}
+  {% endif %}
+
+  {% if post.summary %}
+    <summary>{{ post.summary | strip }}</summary>
+  {% else %}
+    <summary>
+      {% include no-linenos.html content=post.content %}
+      {{ content  | strip_html | truncate: 400 }}
+    </summary>
+  {% endif %}
+
+  </entry>
+{% endfor %}
+</feed>
+{% endcapture %}
+{{ source | replace: '&', '&amp;' }}

assets/img/favicons/browserconfig.xml

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+---
+layout: compress
+---
+
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig>
+  <msapplication>
+    <tile>
+      <square150x150logo src="{{ '/assets/img/favicons/mstile-150x150.png' | relative_url }}" />
+      <TileColor>#da532c</TileColor>
+    </tile>
+  </msapplication>
+</browserconfig>

assets/img/favicons/site.webmanifest

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+---
+layout: compress
+---
+
+{% assign favicon_path = "/assets/img/favicons" | relative_url %}
+
+{
+  "name": "{{ site.title }}",
+  "short_name": "{{ site.title }}",
+  "description": "{{ site.description }}",
+  "icons": [
+    {
+      "src": "{{ favicon_path }}/android-chrome-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "{{ favicon_path }}/android-chrome-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }],
+  "start_url": "{{ '/index.html' | relative_url }}",
+  "theme_color": "#2a1e6b",
+  "background_color": "#ffffff",
+  "display": "fullscreen"
+}

assets/js/data/search.json

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+---
+layout: compress
+swcache: true
+---
+
+[
+  {% for post in site.posts %}
+  {
+    "title": {{ post.title | jsonify }},
+    "url": {{ post.url | relative_url | jsonify }},
+    "categories": {{ post.categories | join: ', ' | jsonify }},
+    "tags": {{ post.tags | join: ', ' | jsonify }},
+    "date": "{{ post.date }}",
+    {% include no-linenos.html content=post.content %}
+    "snippet": {{ content | strip_html | strip_newlines | truncate: 200 | jsonify }}
+  }{% unless forloop.last %},{% endunless %}
+  {% endfor %}
+]