Add persistent history stacks

src/db/migrations/meta/_journal.json

@@ -92,6 +92,13 @@
       "when": 1784833957929,
       "tag": "0012_project_revision_foundation",
       "breakpoints": true
+    },
+    {
+      "idx": 13,
+      "version": "6",
+      "when": 1784835703230,
+      "tag": "0013_project_history_stacks",
+      "breakpoints": true
     }
   ]
 }