docs(readme): rewrite as a beginner landing page, and cut v2.0.0

CHANGELOG.md

@@ -3,7 +3,7 @@
 All notable changes to gtheme are documented here. The format follows
 [Keep a Changelog](https://keepachangelog.com/); versions follow semver.
 
-## v2.0.0 (unreleased) — the rebuild
+## v2.0.0 (26 August 2026) — the rebuild
 
 gtheme was a command-line tool. It is now an app: a GTK4/libadwaita window for
 GNOME, written for someone whose first Linux computer is the one in front of
@@ -123,6 +123,18 @@ tag; nothing from it is lost, and the state it wrote is never touched.
 - Packaging is pure `pyproject.toml` plus a `PKGBUILD` and an `install.sh`; no
   meson, and no `curl | bash` anywhere in the project.
 
+### Documentation
+
+- README rewritten as a landing page for someone who has never used Linux or
+  GitHub: a one-line description and a screenshot first, scannable lists of what
+  the app changes and why it is safe to try, numbered install steps, and a "your
+  first five minutes" walkthrough. The fifteen-page tour and the questions
+  people ask are folded into collapsible sections so the page can be read in a
+  minute or explored in ten.
+- Uninstalling now documents `./install.sh --uninstall` rather than asking you
+  to delete files by hand, and the page ends with where to get help
+  (Discussions, issues, the glossary, the start-here guide).
+
 ## [Unreleased] (v1)
 
 - **Shared render templates: readable text on accent fills.** The GTK accent

GLOSSARY.md

@@ -113,7 +113,7 @@ how to build and install one program. gtheme ships one, so on Arch you can
 install it as a proper package that `pacman -R` removes cleanly.
 
 If none of those words apply to you, use
-[the easy way](README.md#the-easy-way) instead.
+[the easy way](README.md#the-easy-way-recommended) instead.
 
 ### dconf