Fix GitHub Pages workflow

.editorconfig

@@ -12,3 +12,6 @@ trim_trailing_whitespace = true
 
 [*.md]
 trim_trailing_whitespace = false
+
+[*.yml]
+indent_size = 2

.github/workflows/jekyll-gh-pages.yml

@@ -0,0 +1,57 @@
+name: Deploy Jekyll with GitHub Pages
+
+on:
+  pull_request: # TEMPORARY !!!
+  push:
+    branches: ["master"]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Install dependencies
+        run: |
+          docker run --rm \
+            --user $(id -u):$(id -g) \
+            -v "${{ github.workspace }}:/srv/jekyll" \
+            -w /srv/jekyll \
+            -e BUNDLE_PATH=/srv/jekyll/vendor/bundle \
+            jekyll/jekyll:4.2.2 \
+            bundle install
+
+      - name: Build site
+        run: |
+          docker run --rm \
+            --user $(id -u):$(id -g) \
+            -v "${{ github.workspace }}:/srv/jekyll" \
+            -w /srv/jekyll \
+            -e BUNDLE_PATH=/srv/jekyll/vendor/bundle \
+            jekyll/jekyll:4.2.2 \
+            bundle exec jekyll build -d ./_site
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v4
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

.gitignore

@@ -16,4 +16,8 @@ Thumbs.db
 .DS_Store
 
 # po4a .mo files
-*.mo
+*.mo
+
+# Jekyll
+/.jekyll-cache/
+/_site/

Gemfile

@@ -0,0 +1,12 @@
+source "https://rubygems.org"
+
+gem "jekyll", "~> 4.2.2"
+gem "minima", "~> 2.5.2"
+gem "webrick", "~> 1.8"
+
+group :jekyll_plugins do
+  gem "jekyll-seo-tag", "~> 2.8.0"
+  gem "jekyll-optional-front-matter", "~> 0.3.2"
+  gem "jekyll-readme-index", "~> 0.3.0"
+  gem "jekyll-relative-links", "~> 0.7.0"
+end

Gemfile.lock

@@ -0,0 +1,88 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.8.8)
+      public_suffix (>= 2.0.2, < 8.0)
+    colorator (1.1.0)
+    concurrent-ruby (1.3.6)
+    em-websocket (0.5.3)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0)
+    eventmachine (1.2.7)
+    ffi (1.17.2-x86_64-linux-musl)
+    forwardable-extended (2.6.0)
+    http_parser.rb (0.8.0)
+    i18n (1.14.8)
+      concurrent-ruby (~> 1.0)
+    jekyll (4.2.2)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (~> 1.0)
+      jekyll-sass-converter (~> 2.0)
+      jekyll-watch (~> 2.0)
+      kramdown (~> 2.3)
+      kramdown-parser-gfm (~> 1.0)
+      liquid (~> 4.0)
+      mercenary (~> 0.4.0)
+      pathutil (~> 0.9)
+      rouge (~> 3.0)
+      safe_yaml (~> 1.0)
+      terminal-table (~> 2.0)
+    jekyll-feed (0.17.0)
+      jekyll (>= 3.7, < 5.0)
+    jekyll-optional-front-matter (0.3.2)
+      jekyll (>= 3.0, < 5.0)
+    jekyll-readme-index (0.3.0)
+      jekyll (>= 3.0, < 5.0)
+    jekyll-relative-links (0.7.0)
+      jekyll (>= 3.3, < 5.0)
+    jekyll-sass-converter (2.2.0)
+      sassc (> 2.0.1, < 3.0)
+    jekyll-seo-tag (2.8.0)
+      jekyll (>= 3.8, < 5.0)
+    jekyll-watch (2.2.1)
+      listen (~> 3.0)
+    kramdown (2.5.1)
+      rexml (>= 3.3.9)
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
+    liquid (4.0.4)
+    listen (3.9.0)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    mercenary (0.4.0)
+    minima (2.5.2)
+      jekyll (>= 3.5, < 5.0)
+      jekyll-feed (~> 0.9)
+      jekyll-seo-tag (~> 2.1)
+    pathutil (0.16.2)
+      forwardable-extended (~> 2.6)
+    public_suffix (6.0.2)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.11.1)
+      ffi (~> 1.0)
+    rexml (3.4.4)
+    rouge (3.30.0)
+    safe_yaml (1.0.5)
+    sassc (2.4.0)
+      ffi (~> 1.9)
+    terminal-table (2.0.0)
+      unicode-display_width (~> 1.1, >= 1.1.1)
+    unicode-display_width (1.8.0)
+    webrick (1.9.2)
+
+PLATFORMS
+  x86_64-linux-musl
+
+DEPENDENCIES
+  jekyll (~> 4.2.2)
+  jekyll-optional-front-matter (~> 0.3.2)
+  jekyll-readme-index (~> 0.3.0)
+  jekyll-relative-links (~> 0.7.0)
+  jekyll-seo-tag (~> 2.8.0)
+  minima (~> 2.5.2)
+  webrick (~> 1.8)
+
+BUNDLED WITH
+   2.3.25

Makefile

@@ -0,0 +1,7 @@
+serve:
+	docker run --rm -it \
+		-p 4000:4000 \
+		-v $(PWD):/srv/jekyll \
+		--name yiisoft-docs-dev \
+		jekyll/jekyll:4.2.2 \
+		jekyll serve --host 0.0.0.0 --livereload

_config.yml

@@ -0,0 +1,10 @@
+defaults:
+  - scope:
+      path: ""
+    values:
+      layout: "default"
+      render_with_liquid: false
+baseurl: "/docs"
+theme: minima
+relative_links:
+  enabled: true

_layouts/default.html

@@ -0,0 +1,28 @@
+<!DOCTYPE html>
+<html lang="{{ page.lang | default: site.lang | default: " en" }}">
+
+    {%- include head.html -%}
+
+    <body>
+
+        {%- include header.html -%}
+
+        <main class="page-content" aria-label="Content">
+            <div class="wrapper">
+                {{ content }}
+            </div>
+        </main>
+
+        {%- include footer.html -%}
+
+        <script type="module">
+            import mermaid from 'https://cdn.jsdelivr.net/npm/mermaid@11/dist/mermaid.esm.min.mjs';
+            mermaid.initialize({startOnLoad: false});
+            mermaid.run({
+                querySelector: 'code.language-mermaid'
+            });
+        </script>
+
+    </body>
+
+</html>

_translations/guide/po/es/start_workflow.md.po

@@ -6,7 +6,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
-"POT-Creation-Date: 2025-10-19 11:32+0000\n"
+"POT-Creation-Date: 2025-12-20 13:19+0000\n"
 "PO-Revision-Date: 2025-09-04 11:19+0500\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"
@@ -40,7 +40,7 @@ msgstr ""
 
 #. type: Plain text
 #: ../../guide/en/start/workflow.md
-msgid "The installed application has only the homepage, which displays when you access the URL `http://localhost/`.  It shares a common layout that you can reuse on further pages."
+msgid "The installed application contains only one page, accessible at `http://localhost/`.  It shares a common layout that you can reuse on further pages."
 msgstr ""
 
 #. type: Plain text
@@ -133,9 +133,24 @@ msgstr ""
 msgid "The following diagram shows how an application handles a request."
 msgstr ""
 
-#. type: Plain text
+#. type: Fenced code block (mermaid)
 #: ../../guide/en/start/workflow.md
-msgid "![Request Lifecycle](img/request-lifecycle.svg)"
+#, no-wrap
+msgid ""
+"flowchart LR\n"
+"  user[User's client] --> index\n"
+"  index[index.php] --> DI[Initialize Dependency Container]\n"
+"  config[configs] -.-> DI\n"
+"  DI --> RequestFactory[RequestFactory]\n"
+"  RequestFactory -->|Request| app[Application]\n"
+"  app -->|Request| middleware[Middleware]\n"
+"  middleware -->|Request| router[Router]\n"
+"  router -->|Request| action[Action Handler]\n"
+"  action -->|Response| emitter[SapiEmitter]\n"
+"  router -->|Response| emitter\n"
+"  middleware -->|Response| emitter\n"
+"  app -->|Response| emitter\n"
+"  emitter --> user\n"
 msgstr ""
 
 #. type: Bullet: '1. '

_translations/guide/po/id/start_workflow.md.po

@@ -6,7 +6,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
-"POT-Creation-Date: 2025-10-19 11:32+0000\n"
+"POT-Creation-Date: 2025-12-20 13:19+0000\n"
 "PO-Revision-Date: 2025-09-04 11:19+0500\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"
@@ -39,7 +39,7 @@ msgstr ""
 
 #. type: Plain text
 #: ../../guide/en/start/workflow.md
-msgid "The installed application has only the homepage, which displays when you access the URL `http://localhost/`.  It shares a common layout that you can reuse on further pages."
+msgid "The installed application contains only one page, accessible at `http://localhost/`.  It shares a common layout that you can reuse on further pages."
 msgstr ""
 
 #. type: Plain text
@@ -132,9 +132,24 @@ msgstr ""
 msgid "The following diagram shows how an application handles a request."
 msgstr ""
 
-#. type: Plain text
+#. type: Fenced code block (mermaid)
 #: ../../guide/en/start/workflow.md
-msgid "![Request Lifecycle](img/request-lifecycle.svg)"
+#, no-wrap
+msgid ""
+"flowchart LR\n"
+"  user[User's client] --> index\n"
+"  index[index.php] --> DI[Initialize Dependency Container]\n"
+"  config[configs] -.-> DI\n"
+"  DI --> RequestFactory[RequestFactory]\n"
+"  RequestFactory -->|Request| app[Application]\n"
+"  app -->|Request| middleware[Middleware]\n"
+"  middleware -->|Request| router[Router]\n"
+"  router -->|Request| action[Action Handler]\n"
+"  action -->|Response| emitter[SapiEmitter]\n"
+"  router -->|Response| emitter\n"
+"  middleware -->|Response| emitter\n"
+"  app -->|Response| emitter\n"
+"  emitter --> user\n"
 msgstr ""
 
 #. type: Bullet: '1. '

_translations/guide/po/ru/start_workflow.md.po

@@ -6,7 +6,7 @@
 msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
-"POT-Creation-Date: 2025-10-19 11:32+0000\n"
+"POT-Creation-Date: 2025-12-20 13:19+0000\n"
 "PO-Revision-Date: 2025-09-04 11:19+0500\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"
@@ -41,7 +41,7 @@ msgstr "Определение псевдонимов <span id=\"defining-aliase
 
 #. type: Plain text
 #: ../../guide/en/start/workflow.md
-msgid "The installed application has only the homepage, which displays when you access the URL `http://localhost/`.  It shares a common layout that you can reuse on further pages."
+msgid "The installed application contains only one page, accessible at `http://localhost/`.  It shares a common layout that you can reuse on further pages."
 msgstr ""
 
 #. type: Plain text
@@ -135,9 +135,24 @@ msgstr "Полезные ссылки <span id=\"references\"></span>"
 msgid "The following diagram shows how an application handles a request."
 msgstr ""
 
-#. type: Plain text
+#. type: Fenced code block (mermaid)
 #: ../../guide/en/start/workflow.md
-msgid "![Request Lifecycle](img/request-lifecycle.svg)"
+#, no-wrap
+msgid ""
+"flowchart LR\n"
+"  user[User's client] --> index\n"
+"  index[index.php] --> DI[Initialize Dependency Container]\n"
+"  config[configs] -.-> DI\n"
+"  DI --> RequestFactory[RequestFactory]\n"
+"  RequestFactory -->|Request| app[Application]\n"
+"  app -->|Request| middleware[Middleware]\n"
+"  middleware -->|Request| router[Router]\n"
+"  router -->|Request| action[Action Handler]\n"
+"  action -->|Response| emitter[SapiEmitter]\n"
+"  router -->|Response| emitter\n"
+"  middleware -->|Response| emitter\n"
+"  app -->|Response| emitter\n"
+"  emitter --> user\n"
 msgstr ""
 
 #. type: Bullet: '1. '