Add cleanup script for duplicate Safari extension entries

Safari registers each .appex from build artifacts in pluginkit's
database, causing duplicate entries in Safari > Settings > Extensions.
This happens because the registry auto-discovers extensions in
DerivedData, Archives, and build folders.

The cleanup script uses `pluginkit -r` to unregister all Cache Status
extensions from these locations. Run with `just cleanup-extensions`.

Author: bartTC

Justfile

@@ -107,3 +107,11 @@ dmg version="":
 # Build and sign for App Store, then upload manually via Xcode Organizer
 release-appstore tag="":
     ./scripts/archive-appstore.sh {{tag}}
+
+# =============================================================================
+# Maintenance
+# =============================================================================
+
+# Remove duplicate extensions from Safari (cleans Launch Services)
+cleanup-extensions:
+    ./scripts/cleanup-extensions.sh

scripts/cleanup-extensions.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+# Remove duplicate Safari extension registrations from pluginkit
+# See: https://keith.github.io/xcode-man-pages/pluginkit.8.html
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
+
+echo "Unregistering Cache Status extensions from build artifacts..."
+
+# Remove all .appex registrations from build folders
+find "$PROJECT_DIR/build" \
+     "$HOME/Library/Developer/Xcode/DerivedData" \
+     "$HOME/Library/Developer/Xcode/Archives" \
+     -name "*.appex" -path "*Cache*Status*" 2>/dev/null | while read -r path; do
+    pluginkit -r "$path" 2>/dev/null && echo "  Removed: ${path##*/}"
+done
+
+echo ""
+echo "Duplicates remaining: $(pluginkit -m -D -i com.cfcachestatus.CF-Cache-Status.Extension 2>/dev/null | wc -l | tr -d ' ')"
+echo "Restart Safari to apply changes."