ci(release): add patchelf to CI workflows and update release documentation

- Install patchelf in both build and release jobs to support runtime library relocation.
- Update release notes to describe the private desktop runtime archive.
- Clarify in README that development builds require GTK4 dev libraries, while release archives are self-contained with lib/ directory.
- Adjust troubleshooting and release procedure to reflect new offline runtime packaging.

.gitea/workflows/release.yml

@@ -27,7 +27,7 @@ jobs:
         run: >-
           dnf install -y
           bzip2 curl gcc gcc-c++ git gtk4-devel gtk4-layer-shell-devel
-          jq libX11-devel libXfixes-devel nodejs24 nodejs24-bin pkgconf-pkg-config
+          jq libX11-devel libXfixes-devel nodejs24 nodejs24-bin patchelf pkgconf-pkg-config
           pulseaudio-utils ShellCheck tar gzip binutils
 
       - name: Check out repository
@@ -63,7 +63,7 @@ jobs:
         run: >-
           dnf install -y
           bzip2 curl gcc gcc-c++ git gtk4-devel gtk4-layer-shell-devel
-          jq libX11-devel libXfixes-devel nodejs24 nodejs24-bin pkgconf-pkg-config
+          jq libX11-devel libXfixes-devel nodejs24 nodejs24-bin patchelf pkgconf-pkg-config
           pulseaudio-utils ShellCheck tar gzip binutils
 
       - name: Check out repository and tags
@@ -95,7 +95,7 @@ jobs:
           previous_tag="$(git describe --tags --abbrev=0 "${GITHUB_REF_NAME}^" --match 'v[0-9]*' 2>/dev/null || true)"
           {
             printf 'Automated Captioneer release for `%s`.\n\n' "${GITHUB_REF_NAME}"
-            printf 'The Linux x86_64 archive contains both Captioneer commands and their Sherpa/ONNX native libraries. Models are downloaded separately with `scripts/download-models.sh`.\n'
+            printf 'The Linux x86_64 archive contains both Captioneer commands and a private desktop runtime with GTK4, GTK4 Layer Shell, and Sherpa/ONNX libraries. Models are downloaded separately with `scripts/download-models.sh`.\n'
             if [[ -n "$previous_tag" ]]; then
               printf '\nChanges since `%s`:\n\n' "$previous_tag"
               git log --no-merges --pretty='- %s (`%h`)' "${previous_tag}..${GITHUB_REF_NAME}"