Bring the documentation up to the published site and fill its gapsdocs/current-state

The documents still described a site in maintenance with two languages and
a forum page with a language menu. They now describe what is published, and
three documents are new.

New, under Documents/:
- README.md: index of the documentation.
- ARCHITECTURE.md: the frontend, the backend and the forum page, what each
  serves, what the site deliberately does not contain, and how search
  engines and crawlers are treated.
- LOCALIZATION.md: the four languages, how a page picks one, what counts as
  a visitor's choice, how Hebrew text is laid out, where the text lives and
  how to add a language.
- DEVELOPMENT.md: requirements, the commands of each part, the dependency
  locks and checksums, the tests and what CI enforces.

Updated:
- README.md: the site is public; four languages and the browser-language
  default; a documentation section; the Dokka gate.
- CONTENT.md: the forum notice without a language menu; translation rules
  for four languages, including preferring the term a reader would use over
  a literal one; the crawler rules as an owner decision.
- OPERATIONS.md: the live route table; the release steps for the directory
  layout on the server, with the SELinux labelling order that caused an
  outage once; cache keys for the forum files and CDN caching; maintenance
  mode as a fallback instead of the current state; rollback by directory;
  checksum regeneration with --refresh-dependencies; the post-release check
  for four languages and right-to-left text.

No source file changes.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/Documents/README.md b/Documents/README.md
new file mode 100644
index 0000000..6bdfa8a
--- /dev/null
+++ b/Documents/README.md
@@ -0,0 +1,16 @@
+<!-- SPDX-FileCopyrightText: 2026 Progmasoft <support@progmasoft.com> -->
+<!-- SPDX-License-Identifier: AGPL-3.0-or-later WITH AdditionRef-Progmasoft-Patent-Grant-1.1 -->
+
+# Website documentation
+
+These documents describe the Visual X# language website as it is built and published today.
+
+| Document | Read it when you want to know |
+| --- | --- |
+| [Architecture](ARCHITECTURE.md) | the three parts of the repository, what serves which host, and what the site deliberately does not contain |
+| [Localization](LOCALIZATION.md) | which languages are published, how a page picks one, how Hebrew is laid out, and how to add a language |
+| [Development](DEVELOPMENT.md) | how to run and check the frontend, the backend and the forum page, and what CI enforces |
+| [Content contract](CONTENT.md) | what the pages may claim about the language, and the rules for copy and translations |
+| [Operations](OPERATIONS.md) | routes, release steps, rollback and the checks after a release |
+
+The [repository README](../README.md) is the short introduction; start there if you are new.