Add required libraries for graphical support

Added additional XCB and OpenGL libraries to the snapcraft.yaml file to support enhanced graphical features.

.gitattributes

@@ -8,6 +8,7 @@ notes/          export-ignore
 scripts/        export-ignore
 tests/          export-ignore
 flatpak/        export-ignore
+snap/           export-ignore
 
 notes/Theme_dark.png   export-ignore
 notes/Theme_light.png  export-ignore

README.md

@@ -64,6 +64,12 @@ Download ```seer.flatpak```. Install it:
 
     $ flatpak install -y --bundle --user seer.flatpak
 
+### Snap
+
+Beta Seer versions. [Seer's release page](https://github.com/epasveer/seer/releases/tag/snap-latest) on github.
+
+    $ snap install seergdb_<version>.snap --dangerous
+
 
 Install from source
 ---------

notes/README.snap

@@ -0,0 +1,34 @@
+================================================================================
+RELEASING SEERGDB TO THE SNAPCRAFT.IO STORE
+================================================================================
+
+1. Set Up Your Developer Account
+* Create an Account: Visit https://ubuntu.com to create a free developer identity.
+* Complete Profile: Navigate to https://snapcraft.io to choose your public publisher name.
+
+2. Prepare the CLI Environment
+* Install Snapcraft: Ensure you have the packaging tool installed locally:
+  sudo snap install snapcraft --classic
+
+* Authenticate: Log into your developer account via the command line terminal:
+  snapcraft login
+
+3. Register the Snap Name
+* Reserve Name: Claim ownership of the unique store identifier for your app:
+  snapcraft register seergdb
+
+4. Build the Local Package
+* Navigate to Root: Move to the folder containing your snapcraft.yaml configuration file.
+* Compile Binary: Run the compiler package command to build a clean .snap artifact:
+  snapcraft pack
+
+5. Upload and Release to the Store
+* Simultaneous Push: To upload the package and publish it directly to the public stable channel, execute:
+  snapcraft upload seergdb_*.snap --release=stable
+
+* Alternative Safety Route: If you want to test the package safely before a wide public rollout, push it to a pre-release channel first:
+  snapcraft upload seergdb_*.snap --release=edge
+
+* Manual Channel Promotion: If you used the safety route, review the automated security check and manually promote that version when ready:
+  snapcraft release seergdb <revision_number> stable
+

snap/snapcraft.yaml

@@ -29,8 +29,10 @@ confinement: classic
 grade: stable
 compression: lzo
 
-architectures:
-  - build-on: amd64
+platforms:
+  amd64:
+    build-on: amd64
+    build-for: amd64
 
 apps:
   seergdb:
@@ -41,6 +43,8 @@ parts:
   seergdb:
     plugin: cmake
     source: src
+    build-attributes:
+      - enable-patchelf          # classic snap: relink bundled libs to each other
     cmake-parameters:
       - -DCMAKE_INSTALL_PREFIX=/usr
       - -DQTVERSION=QT6
@@ -63,6 +67,28 @@ parts:
       - libqt6openglwidgets6t64
       - qt6-gtk-platformtheme
       - qt6-qpa-plugins
+      - libfreetype6              # pin the font stack explicitly, all from noble
+      - libharfbuzz0b
+      - libfontconfig1
+      - libxcb-cursor0
+      - libxcb-icccm4
+      - libxcb-image0
+      - libxcb-keysyms1
+      - libxcb-randr0
+      - libxcb-render-util0
+      - libxcb-shape0
+      - libxcb-sync1
+      - libxcb-xfixes0
+      - libxcb-xinerama0
+      - libxcb-xkb1
+      - libxcb-util1
+      - libxkbcommon-x11-0
+      - libsm6
+      - libice6
+      - libgl1
+      - libglx-mesa0
+      - libegl1
+      
     stage:
       - -usr/lib/*/cmake
       - -usr/include