chore: bump version to 7.4.3

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "claude-mem",
-  "version": "7.4.2",
+  "version": "7.4.3",
   "description": "Memory compression system for Claude Code - persist context across sessions",
   "keywords": [
     "claude",
@@ -46,6 +46,7 @@
     "worker:status": "bun plugin/scripts/worker-cli.js status",
     "worker:logs": "tail -n 50 ~/.claude-mem/logs/worker-$(date +%Y-%m-%d).log",
     "changelog:generate": "node scripts/generate-changelog.js",
+    "discord:notify": "node scripts/discord-release-notify.js",
     "usage:analyze": "node scripts/analyze-usage.js",
     "usage:today": "node scripts/analyze-usage.js $(date +%Y-%m-%d)",
     "translate-readme": "bun scripts/translate-readme/cli.ts -v -o docs/i18n README.md",