Improved progress display

Previously, the progress bar updated only after completing an entire table.

For large tables such as LIBARC, this could make the application appear to have stopped responding.

Phase 10 updates the interface while rows are being exported.

WorkbenchReplacement/MainView.swift

@@ -5635,7 +5635,7 @@ private struct WorkbenchTableSearchSheet: View {
                     password: PasswordStore.read(profile.id), sql: sql)
                 columns = result.rows.compactMap { $0.first }
                 column = columns.first ?? ""
-            } catch { error = error.localizedDescription }
+            } catch let caughtError { error = caughtError.localizedDescription }
         }
     }
 }
@@ -5740,7 +5740,7 @@ private struct WorkbenchCSVImportSheet: View {
             progress = 0
             completed = false
             prepareMapping()
-        } catch { error = error.localizedDescription }
+        } catch let caughtError { error = caughtError.localizedDescription }
     }
 
     private func prepareMapping() {
@@ -5764,7 +5764,7 @@ private struct WorkbenchCSVImportSheet: View {
                 password: PasswordStore.read(profile.id), sql: sql)
             availableColumns = result.rows.compactMap(\.first)
             prepareMapping()
-        } catch { error = error.localizedDescription }
+        } catch let caughtError { error = caughtError.localizedDescription }
     }
 
     private func importRows() async {
@@ -5801,8 +5801,8 @@ private struct WorkbenchCSVImportSheet: View {
             }
             completed = true
             model.loadTables(database: target.database)
-        } catch {
-            error = "Stopped after \(progress) rows: \(error.localizedDescription). Previously inserted rows may remain."
+        } catch let caughtError {
+            error = "Stopped after \(progress) rows: \(caughtError.localizedDescription). Previously inserted rows may remain."
         }
         busy = false
     }