fix: align plugin deploy dir with package.json name, clean stale dirs

The PVC had a stale headlamp-polaris directory from a previous install.
Headlamp loads plugins by scanning the plugins dir and reading package.json
from each subdirectory — it was loading the old build from headlamp-polaris/
while the deploy script was writing to polaris/. The settings registration
name needs to match the plugin name Headlamp identifies.

Changes:
- Deploy script now uses headlamp-polaris as the directory name (matching
  package.json name field)
- Deploy pod cleans up both polaris/ and headlamp-polaris/ before deploying
  to ensure no stale copies remain
- registerPluginSettings uses headlamp-polaris to match Headlamp's plugin
  identifier

Co-Authored-By: Paperclip <noreply@paperclip.ing>

scripts/deploy-plugin-via-volume.sh

@@ -17,9 +17,10 @@ REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 HEADLAMP_NAMESPACE="${HEADLAMP_NAMESPACE:-kube-system}"
 HEADLAMP_DEPLOY="${HEADLAMP_DEPLOY:-headlamp}"
 
-# The deployed directory name must match the plugin's registered name.
-# PR #56 aligns registerPluginSettings to "polaris"; the directory must match.
-PLUGIN_DIR_NAME="polaris"
+# The deployed directory name must match the package.json name and
+# the registerPluginSettings name. Headlamp identifies plugins by
+# reading package.json from each subdirectory of the plugins dir.
+PLUGIN_DIR_NAME="headlamp-polaris"
 DIST_DIR="$REPO_ROOT/dist"
 
 if [ ! -d "$DIST_DIR" ]; then
@@ -78,8 +79,9 @@ spec:
       command: ["sh", "-c"]
       args:
         - |
+          echo "Cleaning up stale plugin directories..."
+          rm -rf /plugins/polaris /plugins/headlamp-polaris
           echo "Extracting plugin to shared volume..."
-          rm -rf /plugins/PLUGIN_DIR_PLACEHOLDER
           mkdir -p /plugins/PLUGIN_DIR_PLACEHOLDER
           tar -xzf /tarball/plugin.tar.gz -C /plugins/PLUGIN_DIR_PLACEHOLDER
           echo "Files deployed:"

src/index.tsx

@@ -99,7 +99,7 @@ registerRoute({
 });
 
 // Register plugin settings
-registerPluginSettings('polaris', PolarisSettings, true);
+registerPluginSettings('headlamp-polaris', PolarisSettings, true);
 
 // Register details view section for supported controller types
 registerDetailsViewSection(({ resource }) => {