feat(insights): fix DBSCAN, Persian embeddings crash, D3 physics layouts, and D3 node not found runtime error

memento-note/extension/background.js

@@ -0,0 +1,8 @@
+/** Service worker — ouvre le panneau latéral au clic sur l’icône. */
+chrome.runtime.onInstalled.addListener(() => {
+  chrome.sidePanel.setPanelBehavior({ openPanelOnActionClick: true }).catch(() => {})
+})
+
+chrome.runtime.onStartup.addListener(() => {
+  chrome.sidePanel.setPanelBehavior({ openPanelOnActionClick: true }).catch(() => {})
+})