jfjoch_viewer: download versioned tarball from Gitea releases

Fetch jfjoch_viewer-${V}-linux-cuda12.tgz from
https://gitea.psi.ch/mx/Jungfraujoch/releases instead of requiring a
hardcoded local tarball in the buildblock, so new versions only need a
config.yaml entry.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

jfjoch_viewer/README.md

@@ -9,7 +9,7 @@ module use unstable
 module load modbuild/2.1.3
 ```
 
-Step 3: go into jfjoch_viewer directory, update config.yaml to add newest release version and build module with that release name
+Step 3: go into jfjoch_viewer directory, update config.yaml to add the newest release version from https://gitea.psi.ch/mx/Jungfraujoch/releases and build the module with that release name -- the linux-cuda12 tarball is downloaded from the releases page automatically, no local tarball needed
 
 ```
 cd jfjoch_viewer

jfjoch_viewer/build

@@ -8,7 +8,12 @@ pbuild::configure() { :; }
 pbuild::compile() { :; }
 
 pbuild::install() {
-    mkdir "${PREFIX}/bin"
+    # Release tag on gitea.psi.ch/mx/Jungfraujoch matches the module version,
+    # so the tarball is fetched per-version instead of shipped in the buildblock.
+    local -r tarball="jfjoch_viewer-${V}-linux-cuda12.tgz"
+    mkdir -p "${PREFIX}/bin"
     cd "${PREFIX}/bin"
-    tar -xvzf "${BUILDBLOCK_DIR}/jfjoch_viewer-1.0.0-rc.160-linux-cuda12.tgz" --strip-components=1
+    curl -fLO "https://gitea.psi.ch/mx/Jungfraujoch/releases/download/${V}/${tarball}"
+    tar -xzf "${tarball}" --strip-components=1
+    rm "${tarball}"
 }

jfjoch_viewer/modulefile

@@ -1,7 +1,7 @@
 #%Module
 
 module-whatis       "jfjoch viewer trying install offline processing for mx beamlines"
-module-url          "https://gitea.psi.ch/mx/-/packages/rpm/jfjoch-viewer"
+module-url          "https://gitea.psi.ch/mx/Jungfraujoch/releases"
 module-license      "for internal testing right now"
 module-maintainer   "MX Data <jiaxin.duan@psi.ch>"