feat(eu): complete EU migration content salvage (assets + SSH subdomain) (#4141)

* feat(eu/media): vendor 4 missing EU migration assets

Add galaxy-eu.svg, gtn_logo.png, interactive/neo4j.png and
interactive/paraview.svg, which were absent from main. Salvaged from
the EU migration media branch. Refs usegalaxy-eu/issues#943.

* fix(eu/redirects): point legacy EU URLs to EU subsite

Redirect the legacy usegalaxy.eu URLs /news.html and /people.html to
the EU subsite pages /eu/news/ and /eu/people/, matching the sibling
EU-legacy entries in the Misc block (e.g. /galaxy/news.html, /events.html,
/tiaas.html). Both targets resolve as generated hub routes.
Refs usegalaxy-eu/issues#943.

* feat(eu/media): vendor SSH subdomain screenshots

Add tags.png and tool_fav.png, the two tool-panel screenshots referenced
by the legacy index-ssh page. They were served from the legacy site root
(/tags.png, /tool_fav.png) and had no hub counterpart. Refs
usegalaxy-eu/issues#943.

* feat(eu/ssh): add Social Sciences and Humanities subdomain page

Port legacy index-ssh.md to /bare/eu/usegalaxy/ssh/, the last EU subsite
front page without a hub counterpart. Content is reproduced faithfully;
adaptations to hub conventions are:

- Jekyll frontmatter (layout/website/subdomain) replaced by `title` plus
  the notices, data-policy and jobs slots the sibling pages use.
- The `{:toc}` directive is expanded into an explicit Content list; the
  anchors match the emoji headings as rendered.
- Section headings lifted from h2 to h1 to match sibling pages.
- Absolute galaxyproject.org links made relative (/tags/humanities/,
  /events/); images repointed at /assets/media/usegalaxy/ssh/.
- Fixed the stray `**My Tools **` bold marker, which swallowed a whole
  sentence into <strong> on the legacy render.
- Dropped the commented-out Workflows/Projects/Resources/bibliography
  stubs, which were never published.

Refs usegalaxy-eu/issues#943.

* docs(eu/subdomains): list the SSH subdomain

Add Social Sciences and Humanities (ssh.usegalaxy.eu) to the supported
communities table, alongside the other subdomains that have a bare front
page. Refs usegalaxy-eu/issues#943.

* fix(eu/ssh): restore link targets lost in the port

The legacy page carried Kramdown inline attributes on two links -
{:target="_top"} on the guided tour and {:target="_blank"} on the tool
list, the latter added deliberately in usegalaxy-eu/website#1497. Kramdown
IAL syntax is not supported here and would render literally, so the port
dropped both attributes along with the syntax.

Bare pages are iframed inside Galaxy, so a link without a target navigates
the iframe rather than opening as intended. Re-expresses both as raw anchors
with the original target values, matching the convention already used by 16
sibling bare pages.

* Optimised images with calibre/image-actions

---------

Co-authored-by: galaxy-hub-bot[bot] <274848829+galaxy-hub-bot[bot]@users.noreply.github.com>

Author: itisAliRH

content/assets/media/galaxy-eu.svg

@@ -0,0 +1,71 @@
+---
+title: Galaxy for Social Sciences and Humanities
+---
+
+<slot name="/bare/eu/usegalaxy/notices" />
+
+# Welcome to the Galaxy for Social Sciences and Humanities!
+
+Whether you are analysing texts, images, audio data or other media, the **SSH** (Social Sciences and Humanities) Galaxy workbench is **here to help**.
+
+# Content
+
+- [Getting started](#getting-started)
+- [Join the SSH Galaxy Community](#-join-the-ssh-galaxy-community)
+- [Tools](#-tools)
+- [Tutorials](#-tutorials)
+- [Publications / Examples](#-publications--examples)
+- [Upcoming events](#-upcoming-events)
+
+# Getting started
+
+Are you new to Galaxy or returning after a long time and looking for help getting started? Take <a href="https://ssh.usegalaxy.eu/tours/core.galaxy_ui" target="_top">a guided tour</a> through Galaxy's user interface.
+
+# ᯓ➤ Join the SSH Galaxy Community
+
+Anybody interested in Arts, Humanities and Social Sciences in Galaxy is welcome to join our interest group!
+
+- Join the discussion and get the latest updates! [Matrix Chat](https://matrix.to/#/#galaxyproject-digital-humanities:matrix.org)
+
+# 🛠️ Tools
+
+Galaxy Europe offers several thousand tools! To customise them to your needs, you can use the **My Tools** panel on the left-hand side. To see an overview of all tools installed on the platform, click on the button **Discover Tools**. A new page opens in the middle panel. There you can search for tool names, tags and much more.
+If you do not know where to start, you can click on <a href="https://ssh.usegalaxy.eu/tools/list?tag=Humanities" target="_blank">this link</a> to get an example of tools that are relevant in the SSH domain. You will see a list of tools, with the tag "Humanities" below. Click on the star to favourite this tag and see all tools tagged with "Humanities" in your own tool panel on the left.
+
+![Screenshot showing tool panel when searching a tag](/assets/media/usegalaxy/ssh/tags.png)
+
+Are you looking for a specific tool? Type in the name, for example, **Open Refine**. The tool also has a little star (in the same line as the tool name) that you can click to add it to your favourites and the customised tool panel.
+
+![Screenshot showing tool panel when favorising a specific tool](/assets/media/usegalaxy/ssh/tool_fav.png)
+
+That way you can customise your tool panel to your needs. This option is particularly nice if you are working in an interdisciplinary field and want to use tools from various domains.
+
+# 🎓 Tutorials
+
+Check out the DH section of the [Galaxy Training Network](https://training.galaxyproject.org/) (shortened to GTN). The GTN provides open educational resources (OER) that teach you how to use Galaxy. If you have never worked with Galaxy before, we recommend starting with our [Introduction to Digital Humanities in Galaxy](https://gxy.io/GTN:T00557).
+
+<iframe
+  src="https://training.galaxyproject.org/training-material/tags/digital-humanities/embed.html"
+  height="400px"
+  width="100%"
+  class="gtn-embed"
+  frameborder="0">
+</iframe>
+
+Have you created a cool workflow? Do you want to add it as a tutorial? Wonderful! Documentation for providing further tutorials can be accessed [here](https://training.galaxyproject.org/training-material/topics/contributing/). We are open to contributions!
+
+# 📄 Publications / Examples
+
+Not sure where to start?
+
+- [Read](https://doi.org/10.11588/heibooks.1652.c23955) the German article from Daniela Schneider and Jan Leendertse explaining Galaxy's applicability to Humanities and Social Sciences research within a reproducible research environment.
+
+Or check out our [blog posts](/tags/humanities/) for more inspiration!
+
+# 🏛️ Upcoming events
+
+The Galaxy community organises regularly scheduled training events. You can check the [event page](/events/) for the latest events.
+
+<slot name="/eu/common/data-policy" />
+
+<slot name="/bare/eu/usegalaxy/jobs" />

content/assets/media/gtn_logo.png

@@ -32,5 +32,6 @@ title: Supported communities with their own subdomain
 | RNA Galaxy workbench 2.0                       | [rna.usegalaxy.eu](https://rna.usegalaxy.eu)                         |
 | SARS-CoV-2 Data Analysis                       | [covid19.usegalaxy.eu](https://covid19.usegalaxy.eu)                 |
 | Single Cell Omics workbench                    | [singlecell.usegalaxy.eu](https://singlecell.usegalaxy.eu)           |
+| Social Sciences and Humanities                 | [ssh.usegalaxy.eu](https://ssh.usegalaxy.eu)                         |
 | Street Science Community                       | [streetscience.usegalaxy.eu](https://streetscience.usegalaxy.eu)     |
 | Virology                                       | [virology.usegalaxy.eu](https://virology.usegalaxy.eu)               |

content/assets/media/interactive/neo4j.png

@@ -102,7 +102,8 @@ redirects:
   /events.html: /eu/events/
   /gga.html: /use/gga/
   /index-microbiome.html: /bare/eu/usegalaxy/metagenomics/
-  /news.html: /news/
+  /news.html: /eu/news/
+  /people.html: /eu/people/
   /tiaas.html: /eu/tiaas/
   /widgets/: /eu/widgets/
   /widgets/events.html: /bare/eu/latest/events/