Add the wiki, Quality and Release workflows

Add a wiki/ folder with a .publish marker for the shared Publish wiki
workflow, a Quality workflow (shellcheck and shfmt through the shared
reusable workflow) and a manual Release workflow that builds the release
page from CHANGELOG.md.

Set switch_case_indent for *.sh in .editorconfig so shfmt accepts the
existing case layout.

wiki/Home.md

@@ -0,0 +1,20 @@
+# Repo Foundry
+
+Repo Foundry (`src/create-project.sh`) sets up a new project in one run:
+
+- a **Gitea** repository, the source of truth;
+- optionally an empty **GitHub** repository that receives everything through a push mirror from Gitea;
+- a **local project** with one credential-free remote, `origin`, and the SQA-QC-Framework as a git submodule, with its skills, git hooks and templates installed.
+
+It is a Bash script. It shows a plan first and creates nothing until you pass `--apply` and answer yes.
+
+## Pages
+
+| Page | What it covers |
+| --- | --- |
+| [Getting started](Getting-started) | Requirements, install and the first run |
+| [SSH and tokens](SSH-and-tokens) | SSH access to Gitea and the two access tokens |
+| [Troubleshooting](Troubleshooting) | Common failures and what to do |
+
+The full reference (configuration files, security decisions, error handling, known limitations) is the [README](https://git.tirsystem.com/TirSystem-BashScript/RepoFoundry/src/branch/main/README.md).
+Report a problem as an [issue](https://git.tirsystem.com/TirSystem-BashScript/RepoFoundry/issues).