doc: codify minimum supported OS / versioning / releasing

.github/workflows/cmake build check.yml

@@ -27,11 +27,10 @@ jobs:
       - name: Install Qt
         uses: jurplel/install-qt-action@v3
         with:
-          version: 6.6.3
+          # Qt6.4 for testing ubuntu LTS
+          version: 6.4.3
           arch: gcc_64
-          
+          modules: qtwebengine qtwebchannel qtpositioning qt5compat qtmultimedia qtimageformats qtspeech
-          #serialport linuxdeploy need serialport to work.
-          modules: qtwebengine qtwebchannel qtpositioning qt5compat qtmultimedia qtimageformats qtspeech qtserialport
           setup-python: 'false'
           
       - name: ubuntu install thirdparty dependencies

README.md

@@ -13,6 +13,14 @@ dictionaries.
 |--|--|--|
 | [<img src="website/docs/img/linux_genshin.webp" width="500"/>](https://xiaoyifang.github.io/goldendict-ng/) | [<img src="website/docs/img/windows_white.webp" width="500"/>](https://xiaoyifang.github.io/goldendict-ng/) | [<img src="website/docs/img/mac_black.webp" width="500"/>](https://xiaoyifang.github.io/goldendict-ng/) |
 
+[Download & Install](https://xiaoyifang.github.io/goldendict-ng/install/)
+
+[Documentation](https://xiaoyifang.github.io/goldendict-ng/)
+
+[Bug reporting in issue tracker](https://github.com/xiaoyifang/goldendict-ng/issues)
+
+[General discussions](https://github.com/xiaoyifang/goldendict-ng/discussions)
+
 # Some significant features of this fork
 
 - webengine with latest html/css feature support
@@ -26,10 +34,6 @@ dictionaries.
 - daily auto release support
 - lots of bug fixes and improvements
 
-## Installation
-
-<https://xiaoyifang.github.io/goldendict-ng/install/>
-
 ## Help GoldenDict's Development
 
 GoldenDict is developed by volunteers.
@@ -40,16 +44,6 @@ To translate the interface, you can use the Crowdin <https://crowdin.com/project
 
 To start development, check out [developer guide](https://xiaoyifang.github.io/goldendict-ng/developer/)
 
-## Build from source
-
-<https://xiaoyifang.github.io/goldendict-ng/howto/build_from_source/>
-
-## Support
-
-Bug reporting: [GoldenDict issue tracker](https://github.com/xiaoyifang/goldendict-ng/issues)
-
-General discussions: [discussions](https://github.com/xiaoyifang/goldendict-ng/discussions)
-
 
 ## License
 

website/docs/install.md

@@ -4,11 +4,12 @@
 
 ## Download
 
+Goldendict-ng is available pre-built for Windows and macOS. It is available in a few Linux/Unix repos and FlatHub.
+
 * [Latest stable version](https://github.com/xiaoyifang/goldendict/releases/latest) 
-* [Daily pre-release builds](https://github.com/xiaoyifang/goldendict/releases).
+* [Pre-release test builds](https://github.com/xiaoyifang/goldendict/releases).
-
-Both Qt5 and Qt6 builds are provided.
 
+Because it is open source, you can always [build it for yourself](howto/build_from_source.md).
 
 ## Windows 
 
@@ -17,7 +18,9 @@ Choose either
 * `****-installer.exe ` for traditional installer experience
 * `****.zip` for simply unzip and run experience
 
-If Qt's version is not changed, you can also download a single `goldendict.exe` and drop it into previous installation's folder.
+If Qt's version is not changed, you can also download a single `goldendict.exe` and drop it into previous installation's folder (If uncertain, don't do this).
+
+Requires Windows 10 (1809 or later).
 
 ## Linux
 
@@ -29,6 +32,16 @@ If Qt's version is not changed, you can also download a single `goldendict.exe`
 * Pre-built binary is also available from [archlinuxcn's repo](https://github.com/archlinuxcn/repo/tree/master/archlinuxcn/goldendict-ng-git).
 * [Gentoo package from PG_Overlay](https://gitlab.com/Perfect_Gentleman/PG_Overlay/-/blob/master/app-text/goldendict/goldendict-9999-r6.ebuild)
 
+Minimum supported "Linux" versions is supposedly the current Ubuntu LTS or Debian's old stable or Qt6.4.
+
 ## macOS
 
-One of the `.dmg` installers.
+Uses one of the `.dmg` installers in the [Download](#download).
+
+Requires at least macOS 12.
+
+## Versioning and Releasing
+
+This project uses Calendar Versioning: `YY.MM.Patch`.
+
+Releases will tentatively be done twice a year, considering factors like the major releases of Qt and the package freeze dates of Linux distros like Ubuntu.