feat: rebuild CSP practice workflow, UX and automation

backend/src/app_state.cc

@@ -16,6 +16,7 @@ void AppState::Init(const std::string& sqlite_path) {
     db_ = std::make_unique<db::SqliteDb>(db::SqliteDb::OpenFile(sqlite_path));
   }
   csp::db::ApplyMigrations(*db_);
+  csp::db::SeedDemoData(*db_);
 }
 
 csp::db::SqliteDb& AppState::db() {