fix: improve install-dev-plugins.sh cleanup + smoke-platform settingsPanel check

scripts/install-dev-plugins.sh

@@ -34,11 +34,19 @@ echo "  → installing platform-test to $PLUGIN_DIR"
 
 mkdir -p "$ROOT/plugins"
 
+# Clean up any leftover temp directories
+for tmp in "$ROOT/plugins"/.platform-test-tmp.*; do
+  [ -d "$tmp" ] && rm -rf "$tmp"
+done
+
 # Atomic replace: install to temp then rename
 TMP_DIR=$(mktemp -d "$ROOT/plugins/.platform-test-tmp.XXXXXX")
 cp -r "$DIST_PACKAGE/." "$TMP_DIR/"
-rm -f "$PLUGIN_DIR" 2>/dev/null          # remove broken symlink if any
-rm -rf "$PLUGIN_DIR"                      # remove old directory
+# Remove old directory (fix permissions first if needed)
+if [ -d "$PLUGIN_DIR" ]; then
+  chmod -R u+rwx "$PLUGIN_DIR" 2>/dev/null || true
+  rm -rf "$PLUGIN_DIR"
+fi
 mv "$TMP_DIR" "$PLUGIN_DIR"
 
 # ── verify ──

scripts/smoke-platform.sh

@@ -36,6 +36,9 @@ checks = {
     'frontend.entry': m.get('frontend', {}).get('entry') == 'frontend/dist/index.js',
     'contributes.views': len(m.get('contributes', {}).get('views', [])) > 0,
     'contributes.commands': len(m.get('contributes', {}).get('commands', [])) > 0,
+    'contributes.settingsPanels': len(m.get('contributes', {}).get('settingsPanels', [])) > 0,
+    'permissions.storage': 'storage.namespace' in m.get('permissions', []),
+    'permissions.ui': 'ui.register' in m.get('permissions', []),
 }
 all_ok = True
 for name, ok in checks.items():