feat: aggregate journals across node subtrees

internal/core/storage/migrations_016.sql.go

@@ -0,0 +1,12 @@
+package storage
+
+// migration016 — dismissed worklog suggestion events.
+const migration016 = `
+CREATE TABLE IF NOT EXISTS worklog_dismissed_events (
+    event_id TEXT PRIMARY KEY REFERENCES activity_events(id),
+    node_id TEXT NOT NULL REFERENCES nodes(id),
+    created_at TEXT NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS idx_worklog_dismissed_node ON worklog_dismissed_events(node_id);
+`

internal/core/storage/storage.go

@@ -72,6 +72,7 @@ var migrationFiles = map[int]string{
 	13: migration013,
 	14: migration014,
 	15: migration015,
+	16: migration016,
 }
 
 func (db *DB) runInitialSchema() error {