Update RadiantWave - Fixed scaling issues

The RadiantWave app can now apply pending updates by restarting its own
TTY session (plain systemctl, no sudo): getty re-autologins kiosk and
the login shell relaunches cage + app from the new generation.

Also drop the cleanRadiantFiles activation script.

.gitea/workflows/build-dev.yml

@@ -40,8 +40,7 @@ jobs:
           echo "KIOSK_ISO_FILENAME=${FILENAME}" >> "$GITHUB_ENV"
 
       - name: Move old dev images to archive
-        run: |
+        run: tools/archive-images.sh nclack@157.245.124.103 /mnt/infrastructure_data/files/images /mnt/infrastructure_data/files/images/archives 'radiantwave-kiosk-dev*'
-          ssh nclack@157.245.124.103 'find /mnt/infrastructure_data/files/images -maxdepth 1 -name "radiantwave-kiosk-dev*" -exec mv {} /mnt/infrastructure_data/files/images/archives/ ;'
 
       - name: Copy kiosk ISO to fileserver
         run: |

.gitea/workflows/build-prod-rpi.yml

@@ -31,8 +31,7 @@ jobs:
           echo "RPI_IMAGE_FILENAME=${FILENAME}" >> "$GITHUB_ENV"
 
       - name: Move old Raspberry Pi images to archive
-        run: |
+        run: tools/archive-images.sh nclack@157.245.124.103 /mnt/infrastructure_data/files/images /mnt/infrastructure_data/files/images/archives 'radiantwave-rpi*'
-          ssh nclack@157.245.124.103 'find /mnt/infrastructure_data/files/images -maxdepth 1 -name "radiantwave-rpi*" -exec mv {} /mnt/infrastructure_data/files/images/archives/ ;'
 
       - name: Copy Raspberry Pi image to fileserver
         run: |

configuration.nix

@@ -55,6 +55,22 @@ in
     }
   ];
 
+  # Let the kiosk app apply pending updates by restarting its own TTY
+  # session (re-autologin -> fresh cage + RadiantWave). Scoped to exactly
+  # one unit and verb; everything else keeps stock (denied) policy.
+  security.polkit.enable = true;
+  environment.etc."polkit-1/rules.d/10-kiosk-getty.rules".text = ''
+    polkit.addRule(function(action, subject) {
+      if (subject.user !== "kiosk") return null;
+      if (action.id !== "org.freedesktop.systemd1.manage-units") return null;
+      var unit = action.lookup("unit");
+      var verb = action.lookup("verb");
+      if ((unit === "getty@tty1.service" || unit === "getty@tty1") && verb === "restart") {
+        return polkit.Result.YES;
+      }
+    });
+  '';
+
   hardware.graphics.enable = true;
 
   time.timeZone = "America/Chicago";
@@ -69,10 +85,6 @@ in
     operation = "switch";
   };
 
-  system.activationScripts.cleanRadiantFiles = ''
-    rm -rf /home/kiosk/.local/radiantwave/audio
-  '';
-
   # Virtual machine declaration
   virtualisation.vmVariant = {
     boot.loader.systemd-boot.enable = pkgs.lib.mkForce false;

flake.lock

@@ -220,11 +220,11 @@
         "nixpkgs": "nixpkgs_3"
       },
       "locked": {
-        "lastModified": 1787341934,
+        "lastModified": 1787522765,
-        "narHash": "sha256-pWGpgM5acdCO02H8P3KKtdv09n9ucnI3cg8d3/tvwtk=",
+        "narHash": "sha256-D3KOrGcAH07lvKYgyiwejOQpDW91js7zI6l87WdabLk=",
         "ref": "main",
-        "rev": "b96631c374682088088b3d679359d192a0ae74d6",
+        "rev": "63265cc22f3055a782a0114e92c57a36bef723b2",
-        "revCount": 35,
+        "revCount": 40,
         "type": "git",
         "url": "https://gitea.radiantwavetech.com/RadiantWaveTech/radiantwave.git"
       },
@@ -240,11 +240,11 @@
         "nixpkgs": "nixpkgs_4"
       },
       "locked": {
-        "lastModified": 1787507168,
+        "lastModified": 1787522765,
-        "narHash": "sha256-LeMd6lnfhnixC+e77yM5DG5gVYaEa+URfKD+yEmenJc=",
+        "narHash": "sha256-D3KOrGcAH07lvKYgyiwejOQpDW91js7zI6l87WdabLk=",
         "ref": "dev",
-        "rev": "f2a40cd0194fe920a0fc1062d57a93dfc6693b52",
+        "rev": "63265cc22f3055a782a0114e92c57a36bef723b2",
-        "revCount": 38,
+        "revCount": 40,
         "type": "git",
         "url": "https://gitea.radiantwavetech.com/RadiantWaveTech/radiantwave.git"
       },

tools/archive-images.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+# Archive old build images on the fileserver before publishing new ones.
+#
+# Usage: tools/archive-images.sh <ssh-target> <images-dir> <archive-dir> <pattern>...
+#
+# Zero matching files is fine (nothing to archive yet); a missing directory
+# or a failed move aborts non-zero so CI stops before publishing.
+# The remote half is piped to `bash -s` over stdin so there is no nested
+# shell quoting to get wrong.
+
+set -euo pipefail
+
+die() { echo "error: $*" >&2; exit 1; }
+
+(( $# >= 4 )) || die "usage: $0 <ssh-target> <images-dir> <archive-dir> <pattern>..."
+
+target=$1 images_dir=$2 archive_dir=$3
+shift 3
+patterns=("$@")
+
+for v in "$images_dir" "$archive_dir" "${patterns[@]}"; do
+	case $v in
+		*[[:space:]\'\"]*) die "unsafe argument (whitespace/quotes): $v" ;;
+	esac
+done
+
+echo "Archiving previous images on $target:"
+printf '  pattern: %s\n' "${patterns[@]}"
+
+# Assignments prefixed to `bash -s` are parsed by the remote shell as
+# environment variables for the script below; the quoted heredoc marker
+# keeps every byte of the payload literal until bash executes it.
+ssh "$target" "IMAGES_DIR=$images_dir ARCHIVE_DIR=$archive_dir bash -s" <<'REMOTE'
+set -euo pipefail
+shopt -s nullglob
+
+if [ ! -d "$IMAGES_DIR" ]; then
+	echo "error: images dir not found: $IMAGES_DIR" >&2
+	exit 1
+fi
+if [ ! -d "$ARCHIVE_DIR" ]; then
+	echo "error: archive dir not found: $ARCHIVE_DIR" >&2
+	exit 1
+fi
+
+moved=0
+for pat in "${PATTERNS[@]}"; do
+	for f in "$IMAGES_DIR"/$pat; do
+		echo "  archiving $(basename "$f")"
+		mv "$f" "$ARCHIVE_DIR/"
+		moved=$((moved + 1))
+	done
+done
+
+echo "Archived $moved file(s)."
+REMOTE