DataGrid - initial commit

src/components/DismissibleAlert.tsx

@@ -0,0 +1,41 @@
+import { useEffect, useState, type ReactNode } from "react";
+import { X } from "lucide-react";
+
+type AlertTone = "success" | "info" | "warning" | "danger";
+
+type DismissibleAlertProps = {
+  tone?: AlertTone;
+  children: ReactNode;
+  dismissible?: boolean;
+  className?: string;
+  compact?: boolean;
+  resetKey?: string | number;
+};
+
+export default function DismissibleAlert({
+  tone = "info",
+  children,
+  dismissible = true,
+  className = "",
+  compact = false,
+  resetKey
+}: DismissibleAlertProps) {
+  const [visible, setVisible] = useState(true);
+
+  useEffect(() => {
+    setVisible(true);
+  }, [resetKey, children]);
+
+  if (!visible) return null;
+
+  return (
+    <div className={`alert ${tone}${compact ? " compact-alert" : ""} alert-dismissible ${className}`.trim()}>
+      <div className="alert-message">{children}</div>
+      {dismissible && (
+        <button type="button" className="alert-dismiss" aria-label="Dismiss notice" onClick={() => setVisible(false)}>
+          <X size={16} strokeWidth={2.4} aria-hidden="true" />
+        </button>
+      )}
+    </div>
+  );
+}

src/components/table/DataGrid.tsx

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+import { forwardRef, useEffect, useLayoutEffect, useMemo, useRef, useState, type CSSProperties, type ReactNode } from "react";
+import { createPortal } from "react-dom";
+import { ArrowDown, ArrowUp, ChevronsUpDown, Filter, GripVertical, X } from "lucide-react";
+
+export type DataGridSortDirection = "asc" | "desc";
+export type DataGridFilterType = "text" | "number" | "integer" | "boolean" | "date";
+
+type TypedFilterOperator = "contains" | "eq" | "gt" | "gte" | "lt" | "lte" | "before" | "after";
+
+export type DataGridColumn<T> = {
+  id: string;
+  header: ReactNode;
+  width?: number | string;
+  minWidth?: number;
+  maxWidth?: number;
+  resizable?: boolean;
+  sortable?: boolean;
+  filterable?: boolean;
+  filterType?: DataGridFilterType;
+  sticky?: "start" | "end";
+  align?: "left" | "center" | "right";
+  className?: string;
+  headerClassName?: string;
+  render?: (row: T, index: number) => ReactNode;
+  value?: (row: T, index: number) => unknown;
+  sortValue?: (row: T, index: number) => unknown;
+  filterValue?: (row: T, index: number) => unknown;
+};
+
+type DataGridState = {
+  sort?: { columnId: string; direction: DataGridSortDirection };
+  filters?: Record<string, string>;
+  widths?: Record<string, number>;
+};
+
+type DataGridProps<T> = {
+  id: string;
+  rows: T[];
+  columns: DataGridColumn<T>[];
+  getRowKey: (row: T, index: number) => string;
+  emptyText?: ReactNode;
+  fit?: "content" | "container";
+  className?: string;
+  rowClassName?: (row: T, index: number) => string | undefined;
+  storageKey?: string;
+};
+
+type FilterPosition = {
+  top: number;
+  left: number;
+  width: number;
+};
+
+const STORAGE_PREFIX = "multimailer.datagrid.";
+const FILTER_POPOVER_WIDTH = 320;
+const FILTER_POPOVER_MARGIN = 12;
+
+export default function DataGrid<T>({
+  id,
+  rows,
+  columns,
+  getRowKey,
+  emptyText = "No rows found.",
+  fit = "content",
+  className = "",
+  rowClassName,
+  storageKey
+}: DataGridProps<T>) {
+  const localStorageKey = storageKey ?? `${STORAGE_PREFIX}${id}`;
+  const [state, setState] = useState<DataGridState>(() => loadState(localStorageKey));
+  const [resizeState, setResizeState] = useState<{ columnId: string; startX: number; startWidth: number } | null>(null);
+  const [openFilterColumnId, setOpenFilterColumnId] = useState<string | null>(null);
+  const [filterPosition, setFilterPosition] = useState<FilterPosition | null>(null);
+  const gridRef = useRef<HTMLDivElement | null>(null);
+  const headerCellRefs = useRef<Record<string, HTMLDivElement | null>>({});
+  const filterButtonRefs = useRef<Record<string, HTMLButtonElement | null>>({});
+  const filterPopoverRef = useRef<HTMLDivElement | null>(null);
+  const [measuredWidths, setMeasuredWidths] = useState<Record<string, number>>({});
+
+  useEffect(() => {
+    try {
+      window.localStorage.setItem(localStorageKey, JSON.stringify(state));
+    } catch {
+      // Local storage is an enhancement only.
+    }
+  }, [localStorageKey, state]);
+
+  useEffect(() => {
+    const params = new URLSearchParams(window.location.search);
+    const filtersFromUrl: Record<string, string> = {};
+    for (const column of columns) {
+      const exact = params.get(`grid.${id}.${column.id}`) ?? params.get(`filter.${id}.${column.id}`);
+      if (exact) filtersFromUrl[column.id] = exact;
+    }
+    const table = params.get("table");
+    const filter = params.get("filter");
+    if (table === id && filter?.includes(":")) {
+      const [columnId, ...parts] = filter.split(":");
+      const value = parts.join(":");
+      if (columnId && value) filtersFromUrl[columnId] = value;
+    }
+    if (Object.keys(filtersFromUrl).length > 0) {
+      setState((current) => ({ ...current, filters: { ...(current.filters ?? {}), ...filtersFromUrl } }));
+    }
+  }, [id, columns]);
+
+  useLayoutEffect(() => {
+    function measure() {
+      const next: Record<string, number> = {};
+      for (const column of columns) {
+        const element = headerCellRefs.current[column.id];
+        if (!element) continue;
+        const width = Math.round(element.getBoundingClientRect().width);
+        if (width > 0) next[column.id] = width;
+      }
+      setMeasuredWidths((current) => shallowEqualNumberRecords(current, next) ? current : next);
+    }
+
+    measure();
+    if (typeof ResizeObserver === "undefined") {
+      window.addEventListener("resize", measure);
+      return () => window.removeEventListener("resize", measure);
+    }
+
+    const observer = new ResizeObserver(measure);
+    for (const column of columns) {
+      const element = headerCellRefs.current[column.id];
+      if (element) observer.observe(element);
+    }
+    return () => observer.disconnect();
+  }, [columns, state.widths]);
+
+  useEffect(() => {
+    if (!resizeState) return;
+    const activeResize = resizeState;
+    function onMove(event: MouseEvent) {
+      const column = columns.find((item) => item.id === activeResize.columnId);
+      const minWidth = column?.minWidth ?? 80;
+      const maxWidth = column?.maxWidth ?? 2000;
+      const nextWidth = Math.min(maxWidth, Math.max(minWidth, activeResize.startWidth + event.clientX - activeResize.startX));
+      setState((current) => ({ ...current, widths: { ...(current.widths ?? {}), [activeResize.columnId]: nextWidth } }));
+    }
+    function onUp() {
+      setResizeState(null);
+    }
+    window.addEventListener("mousemove", onMove);
+    window.addEventListener("mouseup", onUp);
+    return () => {
+      window.removeEventListener("mousemove", onMove);
+      window.removeEventListener("mouseup", onUp);
+    };
+  }, [resizeState, columns]);
+
+  useEffect(() => {
+    if (!openFilterColumnId) return undefined;
+    const activeFilterColumnId = openFilterColumnId;
+    function update() {
+      updateFilterPosition(activeFilterColumnId);
+    }
+    update();
+    window.addEventListener("resize", update);
+    window.addEventListener("scroll", update, true);
+    return () => {
+      window.removeEventListener("resize", update);
+      window.removeEventListener("scroll", update, true);
+    };
+  }, [openFilterColumnId]);
+
+  useEffect(() => {
+    if (!openFilterColumnId) return undefined;
+    const activeFilterColumnId = openFilterColumnId;
+    function onPointerDown(event: MouseEvent) {
+      const target = event.target as Node | null;
+      const popover = filterPopoverRef.current;
+      const trigger = filterButtonRefs.current[activeFilterColumnId];
+      if (target && (popover?.contains(target) || trigger?.contains(target))) return;
+      setOpenFilterColumnId(null);
+    }
+    function onKeyDown(event: KeyboardEvent) {
+      if (event.key === "Escape") setOpenFilterColumnId(null);
+    }
+    window.addEventListener("mousedown", onPointerDown);
+    window.addEventListener("keydown", onKeyDown);
+    return () => {
+      window.removeEventListener("mousedown", onPointerDown);
+      window.removeEventListener("keydown", onKeyDown);
+    };
+  }, [openFilterColumnId]);
+
+  const filterTypes = useMemo(() => {
+    const result: Record<string, DataGridFilterType> = {};
+    for (const column of columns) result[column.id] = column.filterType ?? inferFilterType(column, rows);
+    return result;
+  }, [columns, rows]);
+
+  const visibleRows = useMemo(() => {
+    const filters = state.filters ?? {};
+    const filtered = rows.filter((row, rowIndex) => columns.every((column) => {
+      const filterValue = filters[column.id] ?? "";
+      if (!filterValue.trim()) return true;
+      const rawValue = valueForFilter(column, row, rowIndex);
+      return matchesFilter(rawValue, filterValue, filterTypes[column.id]);
+    }));
+    if (!state.sort) return filtered;
+    const sortColumn = columns.find((column) => column.id === state.sort?.columnId);
+    if (!sortColumn) return filtered;
+    return [...filtered].sort((a, b) => {
+      const aIndex = rows.indexOf(a);
+      const bIndex = rows.indexOf(b);
+      const aValue = sortColumn.sortValue?.(a, aIndex) ?? sortColumn.value?.(a, aIndex) ?? "";
+      const bValue = sortColumn.sortValue?.(b, bIndex) ?? sortColumn.value?.(b, bIndex) ?? "";
+      const result = compareValues(aValue, bValue);
+      return state.sort?.direction === "desc" ? -result : result;
+    });
+  }, [rows, columns, state.filters, state.sort, filterTypes]);
+
+  const stretchedColumnIds = useMemo(() => chooseStretchedColumns(columns, state.widths), [columns, state.widths]);
+  const templateColumns = columns.map((column) => widthForColumn(column, state.widths?.[column.id], stretchedColumnIds.has(column.id))).join(" ");
+  const hasFlexibleColumns = columns.some((column) => stretchedColumnIds.has(column.id) || isFlexibleColumn(column, state.widths?.[column.id]));
+  const stickyOffsets = useMemo(() => computeStickyOffsets(columns, state.widths, measuredWidths), [columns, state.widths, measuredWidths]);
+  const gridClassName = `data-grid ${hasFlexibleColumns ? "data-grid-has-flex" : "data-grid-fixed-only"}`;
+  const activeFilterColumn = openFilterColumnId ? columns.find((column) => column.id === openFilterColumnId) : undefined;
+
+  function toggleSort(column: DataGridColumn<T>) {
+    if (!column.sortable) return;
+    setState((current) => {
+      if (current.sort?.columnId !== column.id) return { ...current, sort: { columnId: column.id, direction: "asc" } };
+      if (current.sort.direction === "asc") return { ...current, sort: { columnId: column.id, direction: "desc" } };
+      return { ...current, sort: undefined };
+    });
+  }
+
+  function patchFilter(columnId: string, value: string) {
+    setState((current) => ({ ...current, filters: { ...(current.filters ?? {}), [columnId]: value } }));
+  }
+
+  function clearFilter(columnId: string) {
+    setState((current) => {
+      const nextFilters = { ...(current.filters ?? {}) };
+      delete nextFilters[columnId];
+      return { ...current, filters: nextFilters };
+    });
+  }
+
+  function updateFilterPosition(columnId: string) {
+    const element = filterButtonRefs.current[columnId];
+    if (!element) return;
+    const rect = element.getBoundingClientRect();
+    const width = Math.min(FILTER_POPOVER_WIDTH, Math.max(240, window.innerWidth - FILTER_POPOVER_MARGIN * 2));
+    const left = Math.min(Math.max(FILTER_POPOVER_MARGIN, rect.left), window.innerWidth - width - FILTER_POPOVER_MARGIN);
+    const top = Math.min(rect.bottom + 8, window.innerHeight - 120);
+    setFilterPosition({ top, left, width });
+  }
+
+  function toggleFilterPopover(columnId: string) {
+    setOpenFilterColumnId((current) => {
+      if (current === columnId) return null;
+      window.requestAnimationFrame(() => updateFilterPosition(columnId));
+      return columnId;
+    });
+  }
+
+  return (
+    <div className={`data-grid-shell data-grid-${fit} ${className}`.trim()} ref={gridRef}>
+      <div className={gridClassName} role="table" aria-label={id} style={{ gridTemplateColumns: templateColumns }}>
+        {columns.map((column, columnIndex) => {
+          const sorted = state.sort?.columnId === column.id ? state.sort.direction : undefined;
+          const hasFilter = Boolean((state.filters?.[column.id] ?? "").trim());
+          return (
+            <div
+              key={`header-${column.id}`}
+              role="columnheader"
+              ref={(element) => { headerCellRefs.current[column.id] = element; }}
+              className={`data-grid-cell data-grid-header-cell ${column.headerClassName ?? ""} ${column.sortable ? "is-sortable" : ""} ${sorted ? "is-sorted" : ""} ${stickyClass(column)}`.trim()}
+              style={stickyStyle(column, stickyOffsets[columnIndex])}
+            >
+              <button type="button" className="data-grid-header-button" disabled={!column.sortable} onClick={() => toggleSort(column)}>
+                <span>{column.header}</span>
+                {column.sortable && <SortIcon direction={sorted} />}
+              </button>
+              {column.filterable && (
+                <button
+                  type="button"
+                  ref={(element) => { filterButtonRefs.current[column.id] = element; }}
+                  className={`data-grid-filter-trigger${hasFilter ? " has-filter" : ""}${openFilterColumnId === column.id ? " is-open" : ""}`}
+                  aria-label={`Filter ${String(column.header)}`}
+                  aria-expanded={openFilterColumnId === column.id}
+                  onClick={(event) => {
+                    event.stopPropagation();
+                    toggleFilterPopover(column.id);
+                  }}
+                >
+                  <Filter size={14} aria-hidden="true" />
+                </button>
+              )}
+              {column.resizable && (
+                <button
+                  type="button"
+                  className="data-grid-resize-handle"
+                  aria-label={`Resize ${String(column.header)}`}
+                  onMouseDown={(event) => {
+                    event.preventDefault();
+                    event.stopPropagation();
+                    const headerElement = headerCellRefs.current[column.id];
+                    const currentWidth = headerElement ? Math.round(headerElement.getBoundingClientRect().width) : columnPixelWidth(column, state.widths?.[column.id], measuredWidths[column.id]);
+                    setResizeState({ columnId: column.id, startX: event.clientX, startWidth: currentWidth });
+                  }}
+                >
+                  <GripVertical size={14} aria-hidden="true" />
+                </button>
+              )}
+            </div>
+          );
+        })}
+        {visibleRows.length === 0 ? (
+          <div className="data-grid-empty" role="row">
+            <div role="cell">{emptyText}</div>
+          </div>
+        ) : visibleRows.map((row, visibleIndex) => {
+          const originalIndex = rows.indexOf(row);
+          const rowClass = rowClassName?.(row, originalIndex);
+          const parityClass = visibleIndex % 2 === 0 ? "data-grid-row-even" : "data-grid-row-odd";
+          return columns.map((column, columnIndex) => (
+            <div
+              key={`${getRowKey(row, originalIndex)}-${column.id}`}
+              role="cell"
+              className={`data-grid-cell data-grid-body-cell ${parityClass} ${column.align ? `align-${column.align}` : ""} ${column.className ?? ""} ${rowClass ?? ""} ${stickyClass(column)}`.trim()}
+              style={stickyStyle(column, stickyOffsets[columnIndex])}
+            >
+              {column.render ? column.render(row, originalIndex) : stringifyCell(column.value?.(row, originalIndex))}
+            </div>
+          ));
+        })}
+      </div>
+      {activeFilterColumn && filterPosition && createPortal(
+        <FilterPopover
+          ref={filterPopoverRef}
+          column={activeFilterColumn}
+          filterType={filterTypes[activeFilterColumn.id]}
+          value={state.filters?.[activeFilterColumn.id] ?? ""}
+          position={filterPosition}
+          onChange={(value) => patchFilter(activeFilterColumn.id, value)}
+          onClear={() => clearFilter(activeFilterColumn.id)}
+          onClose={() => setOpenFilterColumnId(null)}
+        />,
+        document.body
+      )}
+    </div>
+  );
+}
+
+type FilterPopoverProps = {
+  column: Pick<DataGridColumn<unknown>, "id" | "header">;
+  filterType: DataGridFilterType;
+  value: string;
+  position: FilterPosition;
+  onChange: (value: string) => void;
+  onClear: () => void;
+  onClose: () => void;
+};
+
+const FilterPopover = forwardRef<HTMLDivElement, FilterPopoverProps>(function FilterPopover(
+  { column, filterType, value, position, onChange, onClear, onClose },
+  ref
+) {
+  const parsed = parseTypedFilter(value, filterType);
+  const operatorOptions = filterType === "date" ? DATE_OPERATORS : NUMBER_OPERATORS;
+  return (
+    <div
+      ref={ref}
+      className="data-grid-filter-popover"
+      style={{ top: position.top, left: position.left, width: position.width }}
+      role="dialog"
+      aria-label={`Filter ${String(column.header)}`}
+    >
+      <div className="data-grid-filter-popover-header">
+        <strong>Filter {column.header}</strong>
+        <button type="button" aria-label="Close filter" onClick={onClose}><X size={15} /></button>
+      </div>
+      {filterType === "boolean" ? (
+        <label className="data-grid-filter-field">
+          <span>Value</span>
+          <select value={value} onChange={(event) => onChange(event.target.value)} autoFocus>
+            <option value="">All</option>
+            <option value="true">Yes / active</option>
+            <option value="false">No / inactive</option>
+          </select>
+        </label>
+      ) : filterType === "number" || filterType === "integer" || filterType === "date" ? (
+        <div className="data-grid-filter-stack">
+          <label className="data-grid-filter-field">
+            <span>Match</span>
+            <select
+              value={parsed.operator}
+              onChange={(event) => onChange(formatTypedFilter(event.target.value as TypedFilterOperator, parsed.value))}
+            >
+              {operatorOptions.map((option) => <option key={option.value} value={option.value}>{option.label}</option>)}
+            </select>
+          </label>
+          <label className="data-grid-filter-field">
+            <span>Value</span>
+            <div className="data-grid-filter-input-wrap">
+              <input
+                type={filterType === "date" ? "date" : "number"}
+                step={filterType === "integer" ? 1 : undefined}
+                value={parsed.value}
+                onChange={(event) => onChange(formatTypedFilter(parsed.operator, event.target.value))}
+                autoFocus
+              />
+              {value && <button type="button" aria-label="Clear filter" onClick={onClear}><X size={14} /></button>}
+            </div>
+          </label>
+        </div>
+      ) : (
+        <label className="data-grid-filter-field">
+          <span>Contains</span>
+          <div className="data-grid-filter-input-wrap">
+            <input value={value} placeholder="Filter" onChange={(event) => onChange(event.target.value)} autoFocus />
+            {value && <button type="button" aria-label="Clear filter" onClick={onClear}><X size={14} /></button>}
+          </div>
+        </label>
+      )}
+    </div>
+  );
+});
+
+function SortIcon({ direction }: { direction?: DataGridSortDirection }) {
+  if (direction === "asc") return <ArrowUp size={14} aria-label="Sorted ascending" />;
+  if (direction === "desc") return <ArrowDown size={14} aria-label="Sorted descending" />;
+  return <ChevronsUpDown size={14} aria-hidden="true" />;
+}
+
+function loadState(key: string): DataGridState {
+  try {
+    const value = window.localStorage.getItem(key);
+    if (!value) return {};
+    return JSON.parse(value) as DataGridState;
+  } catch {
+    return {};
+  }
+}
+
+function widthForColumn<T>(column: DataGridColumn<T>, savedWidth?: number, stretch = false): string {
+  if (stretch) {
+    const baseWidth = savedWidth ?? fixedWidthFloor(column);
+    return `minmax(${baseWidth}px, 1fr)`;
+  }
+  if (savedWidth) {
+    return isFlexibleWidth(column.width) ? `minmax(${savedWidth}px, 1fr)` : `${savedWidth}px`;
+  }
+  if (typeof column.width === "number") return `${column.width}px`;
+  if (column.width) return column.width;
+  return `minmax(${column.minWidth ?? 140}px, 1fr)`;
+}
+
+function chooseStretchedColumns<T>(columns: DataGridColumn<T>[], savedWidths?: Record<string, number>): Set<string> {
+  if (columns.length === 0) return new Set();
+
+  const nonStickyResizable = columns.filter((column) => column.resizable && !column.sticky);
+  if (nonStickyResizable.length > 0) return new Set(nonStickyResizable.map((column) => column.id));
+
+  const resizable = columns.filter((column) => column.resizable);
+  if (resizable.length > 0) return new Set(resizable.map((column) => column.id));
+
+  const flexible = columns.filter((column) => isFlexibleColumn(column, savedWidths?.[column.id]));
+  if (flexible.length > 0) return new Set();
+
+  const nonStickyColumns = columns.filter((column) => !column.sticky);
+  const fallback = nonStickyColumns[nonStickyColumns.length - 1] ?? columns[columns.length - 1];
+  return new Set(fallback ? [fallback.id] : []);
+}
+
+function fixedWidthFloor<T>(column: DataGridColumn<T>): number {
+  const parsed = parsePixelWidth(column.width);
+  if (typeof column.width === "number") return column.width;
+  return parsed ?? column.minWidth ?? 140;
+}
+
+function isFlexibleColumn<T>(column: DataGridColumn<T>, savedWidth?: number): boolean {
+  if (savedWidth && !isFlexibleWidth(column.width)) return false;
+  return isFlexibleWidth(column.width);
+}
+
+function isFlexibleWidth(width?: string | number): boolean {
+  if (width === undefined) return true;
+  if (typeof width === "number") return false;
+  const normalized = width.toLowerCase();
+  return normalized.includes("fr") || normalized.includes("minmax") || normalized.includes("auto");
+}
+
+function columnPixelWidth<T>(column: DataGridColumn<T>, savedWidth?: number, measuredWidth?: number): number {
+  if (measuredWidth) return measuredWidth;
+  if (savedWidth) return savedWidth;
+  if (typeof column.width === "number") return column.width;
+  const parsed = parsePixelWidth(column.width);
+  if (parsed) return parsed;
+  return column.minWidth ?? 160;
+}
+
+function parsePixelWidth(width?: string | number): number | null {
+  if (typeof width === "number") return width;
+  if (!width) return null;
+  const pxMatch = width.match(/(\d+(?:\.\d+)?)px/);
+  if (!pxMatch) return null;
+  const parsed = Number.parseFloat(pxMatch[1]);
+  return Number.isFinite(parsed) ? parsed : null;
+}
+
+function computeStickyOffsets<T>(columns: DataGridColumn<T>[], savedWidths?: Record<string, number>, measuredWidths?: Record<string, number>): Record<number, number> {
+  const offsets: Record<number, number> = {};
+  let left = 0;
+  columns.forEach((column, index) => {
+    if (column.sticky === "start") {
+      offsets[index] = left;
+      left += columnPixelWidth(column, savedWidths?.[column.id], measuredWidths?.[column.id]);
+    }
+  });
+  let right = 0;
+  [...columns].reverse().forEach((column, reverseIndex) => {
+    const index = columns.length - 1 - reverseIndex;
+    if (column.sticky === "end") {
+      offsets[index] = right;
+      right += columnPixelWidth(column, savedWidths?.[column.id], measuredWidths?.[column.id]);
+    }
+  });
+  return offsets;
+}
+
+function stickyClass<T>(column: DataGridColumn<T>): string {
+  if (column.sticky === "start") return "is-sticky-start";
+  if (column.sticky === "end") return "is-sticky-end";
+  return "";
+}
+
+function stickyStyle<T>(column: DataGridColumn<T>, offset?: number): CSSProperties | undefined {
+  if (!column.sticky) return undefined;
+  return column.sticky === "start" ? { left: offset ?? 0 } : { right: offset ?? 0 };
+}
+
+function valueForFilter<T>(column: DataGridColumn<T>, row: T, rowIndex: number): unknown {
+  return column.filterValue?.(row, rowIndex) ?? column.value?.(row, rowIndex) ?? column.render?.(row, rowIndex) ?? "";
+}
+
+function matchesFilter(value: unknown, filterValue: string, filterType: DataGridFilterType): boolean {
+  if (!filterValue.trim()) return true;
+  if (filterType === "boolean") {
+    const expected = parseBooleanFilter(filterValue);
+    if (expected === null) return stringifyCell(value).toLowerCase().includes(filterValue.toLowerCase());
+    const actual = normalizeBoolean(value);
+    return actual === null ? stringifyCell(value).toLowerCase().includes(filterValue.toLowerCase()) : actual === expected;
+  }
+  if (filterType === "number" || filterType === "integer") {
+    const parsed = parseTypedFilter(filterValue, filterType);
+    if (!parsed.value.trim()) return true;
+    const actual = parseNumberValue(value);
+    const expected = Number(parsed.value);
+    if (!Number.isFinite(actual) || !Number.isFinite(expected)) return false;
+    return compareByOperator(actual, expected, parsed.operator);
+  }
+  if (filterType === "date") {
+    const parsed = parseTypedFilter(filterValue, filterType);
+    if (!parsed.value.trim()) return true;
+    const actual = parseDateValue(value);
+    const expected = parseDateValue(parsed.value);
+    if (!Number.isFinite(actual) || !Number.isFinite(expected)) return false;
+    return compareByOperator(actual, expected, parsed.operator);
+  }
+  return stringifyCell(value).toLowerCase().includes(filterValue.trim().toLowerCase());
+}
+
+function inferFilterType<T>(column: DataGridColumn<T>, rows: T[]): DataGridFilterType {
+  const samples = rows.slice(0, 25)
+    .map((row, index) => valueForFilter(column, row, index))
+    .filter((value) => stringifyCell(value).trim() !== "");
+  if (samples.length === 0) return "text";
+  if (samples.every((value) => normalizeBoolean(value) !== null)) return "boolean";
+  if (samples.every((value) => Number.isFinite(parseNumberValue(value)))) {
+    return samples.every((value) => Number.isInteger(parseNumberValue(value))) ? "integer" : "number";
+  }
+  if (samples.every((value) => Number.isFinite(parseDateValue(value)))) return "date";
+  return "text";
+}
+
+function parseBooleanFilter(value: string): boolean | null {
+  const normalized = value.trim().toLowerCase();
+  if (!normalized) return null;
+  if (["true", "yes", "1", "active", "on"].includes(normalized)) return true;
+  if (["false", "no", "0", "inactive", "off"].includes(normalized)) return false;
+  return null;
+}
+
+function normalizeBoolean(value: unknown): boolean | null {
+  if (typeof value === "boolean") return value;
+  if (typeof value === "number") return value !== 0;
+  const normalized = stringifyCell(value).trim().toLowerCase();
+  if (!normalized) return null;
+  if (["true", "yes", "1", "active", "required", "individual", "warn", "on", "enabled", "success", "ok", "can override", "mock"].includes(normalized)) return true;
+  if (["false", "no", "0", "inactive", "optional", "off", "global only", "locked", "current", "disabled", "none"].includes(normalized)) return false;
+  return null;
+}
+
+function parseNumberValue(value: unknown): number {
+  if (typeof value === "number") return value;
+  const text = stringifyCell(value).replace(/[^0-9.,+-]/g, "").replace(",", ".");
+  if (!text.trim()) return NaN;
+  return Number(text);
+}
+
+function parseDateValue(value: unknown): number {
+  if (value instanceof Date) return value.getTime();
+  const text = stringifyCell(value).trim();
+  if (!text) return NaN;
+  return Date.parse(text);
+}
+
+function compareByOperator(actual: number, expected: number, operator: TypedFilterOperator): boolean {
+  if (operator === "gt" || operator === "after") return actual > expected;
+  if (operator === "gte") return actual >= expected;
+  if (operator === "lt" || operator === "before") return actual < expected;
+  if (operator === "lte") return actual <= expected;
+  return actual === expected;
+}
+
+function parseTypedFilter(value: string, filterType: DataGridFilterType): { operator: TypedFilterOperator; value: string } {
+  if (!value.includes(":")) return { operator: filterType === "text" ? "contains" : "eq", value };
+  const [operator, ...parts] = value.split(":");
+  const candidate = operator as TypedFilterOperator;
+  if (!["contains", "eq", "gt", "gte", "lt", "lte", "before", "after"].includes(candidate)) {
+    return { operator: filterType === "text" ? "contains" : "eq", value };
+  }
+  return { operator: candidate, value: parts.join(":") };
+}
+
+function formatTypedFilter(operator: TypedFilterOperator, value: string): string {
+  return value ? `${operator}:${value}` : "";
+}
+
+const NUMBER_OPERATORS: { value: TypedFilterOperator; label: string }[] = [
+  { value: "eq", label: "Equals" },
+  { value: "gt", label: "Greater than" },
+  { value: "gte", label: "Greater or equal" },
+  { value: "lt", label: "Less than" },
+  { value: "lte", label: "Less or equal" }
+];
+
+const DATE_OPERATORS: { value: TypedFilterOperator; label: string }[] = [
+  { value: "eq", label: "On" },
+  { value: "before", label: "Before" },
+  { value: "after", label: "After" }
+];
+
+function compareValues(a: unknown, b: unknown): number {
+  if (typeof a === "number" && typeof b === "number") return a - b;
+  const aDate = typeof a === "string" ? Date.parse(a) : NaN;
+  const bDate = typeof b === "string" ? Date.parse(b) : NaN;
+  if (!Number.isNaN(aDate) && !Number.isNaN(bDate)) return aDate - bDate;
+  return stringifyCell(a).localeCompare(stringifyCell(b), undefined, { numeric: true, sensitivity: "base" });
+}
+
+function stringifyCell(value: unknown): string {
+  if (value === null || value === undefined) return "";
+  if (typeof value === "string" || typeof value === "number" || typeof value === "boolean") return String(value);
+  if (Array.isArray(value)) return value.map(stringifyCell).join(", ");
+  return "";
+}
+
+function shallowEqualNumberRecords(a: Record<string, number>, b: Record<string, number>): boolean {
+  const aKeys = Object.keys(a);
+  const bKeys = Object.keys(b);
+  if (aKeys.length !== bKeys.length) return false;
+  return aKeys.every((key) => a[key] === b[key]);
+}

src/features/addressbook/AddressBookPage.tsx

@@ -2,6 +2,7 @@ import Button from "../../components/Button";
 import Card from "../../components/Card";
 import PageTitle from "../../components/PageTitle";
 import StatusBadge from "../../components/StatusBadge";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 
 const personalContacts = [
   { name: "Ada Lovelace", email: "ada@example.local", source: "Personal", tags: "Used recently" },
@@ -18,6 +19,16 @@ const tenantContacts = [
   { name: "Data Protection", email: "privacy@example.local", source: "Tenant", tags: "Directory" }
 ];
 
+function contactColumns(): DataGridColumn<{ name: string; email: string; source: string; tags: string }>[] {
+  return [
+    { id: "name", header: "Name", width: "minmax(180px, 1fr)", sortable: true, filterable: true, sticky: "start", render: (contact) => <strong>{contact.name}</strong>, value: (contact) => contact.name },
+    { id: "email", header: "Email", width: 240, sortable: true, filterable: true, value: (contact) => contact.email },
+    { id: "scope", header: "Scope", width: 140, sortable: true, filterable: true, value: (contact) => contact.source },
+    { id: "tags", header: "Tags", width: 180, sortable: true, filterable: true, value: (contact) => contact.tags },
+    { id: "status", header: "Status", width: 130, sortable: true, filterable: true, render: () => <StatusBadge status="mock" />, value: () => "mock" }
+  ];
+}
+
 export default function AddressBookPage() {
   const allContacts = [...personalContacts, ...groupContacts, ...tenantContacts];
 
@@ -62,24 +73,14 @@ export default function AddressBookPage() {
           </div>
 
           <Card title="Contacts" actions={<Button disabled>Manage sources</Button>}>
-            <div className="app-table-wrap compact-table-wrap">
-              <table className="app-table module-table">
-                <thead>
-                  <tr><th>Name</th><th>Email</th><th>Scope</th><th>Tags</th><th>Status</th></tr>
-                </thead>
-                <tbody>
-                  {allContacts.map((contact) => (
-                    <tr key={`${contact.source}-${contact.email}`}>
-                      <td><strong>{contact.name}</strong></td>
-                      <td>{contact.email}</td>
-                      <td>{contact.source}</td>
-                      <td>{contact.tags}</td>
-                      <td><StatusBadge status="mock" /></td>
-                    </tr>
-                  ))}
-                </tbody>
-              </table>
-            </div>
+            <DataGrid
+              id="address-book-contacts"
+              rows={allContacts}
+              columns={contactColumns()}
+              getRowKey={(contact) => `${contact.source}-${contact.email}`}
+              emptyText="No contacts found."
+              className="compact-table-wrap module-table"
+            />
           </Card>
         </div>
       </section>

src/features/admin/AdminPage.tsx

@@ -5,6 +5,7 @@ import PageTitle from "../../components/PageTitle";
 import StatusBadge from "../../components/StatusBadge";
 import ModuleSubnav, { type ModuleSubnavGroup } from "../../layout/ModuleSubnav";
 import AdminPlaceholderTable, { type AdminPlaceholderTableConfig } from "./components/AdminPlaceholderTable";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 
 type AdminSection = "overview" | "system" | "tenants" | "users" | "groups" | "roles" | "api-keys" | "mail-servers" | "settings" | "audit";
 
@@ -203,16 +204,28 @@ function ApiKeys() {
   return (
     <Card title="API keys" actions={<Button disabled>Create API key</Button>}>
       <p className="muted">The backend has API-key support, but a complete key lifecycle UI needs list, revoke and rotate endpoints before this can be safely exposed.</p>
-      <div className="app-table-wrap compact-table-wrap">
-        <table className="app-table module-table">
-          <thead><tr><th>Name</th><th>Scope</th><th>Owner</th><th>Status</th><th>Last used</th></tr></thead>
-          <tbody><tr><td>Development key</td><td>Automation</td><td>Tenant</td><td><StatusBadge status="dev" /></td><td>Local only</td></tr></tbody>
-        </table>
-      </div>
+      <DataGrid
+        id="admin-api-keys"
+        rows={[{ id: "development", name: "Development key", scope: "Automation", owner: "Tenant", status: "dev", lastUsed: "Local only" }]}
+        columns={apiKeyColumns()}
+        getRowKey={(row) => row.id}
+        emptyText="No API keys found."
+        className="compact-table-wrap module-table"
+      />
     </Card>
   );
 }
 
+function apiKeyColumns(): DataGridColumn<{ id: string; name: string; scope: string; owner: string; status: string; lastUsed: string }>[] {
+  return [
+    { id: "name", header: "Name", width: "minmax(180px, 1fr)", sortable: true, filterable: true, sticky: "start", value: (row) => row.name },
+    { id: "scope", header: "Scope", width: 160, sortable: true, filterable: true, value: (row) => row.scope },
+    { id: "owner", header: "Owner", width: 140, sortable: true, filterable: true, value: (row) => row.owner },
+    { id: "status", header: "Status", width: 130, sortable: true, filterable: true, render: (row) => <StatusBadge status={row.status} />, value: (row) => row.status },
+    { id: "last_used", header: "Last used", width: 160, sortable: true, filterable: true, value: (row) => row.lastUsed }
+  ];
+}
+
 function MailServers() {
   return <AdminPlaceholderTable {...adminTableConfigs.mailServers} />;
 }

src/features/admin/components/AdminPlaceholderTable.tsx

@@ -1,5 +1,7 @@
 import Button from "../../../components/Button";
 import Card from "../../../components/Card";
+import DismissibleAlert from "../../../components/DismissibleAlert";
+import DataGrid, { type DataGridColumn } from "../../../components/table/DataGrid";
 
 export type AdminPlaceholderTableConfig = {
   title: string;
@@ -9,19 +11,43 @@ export type AdminPlaceholderTableConfig = {
   note?: string;
 };
 
+type PlaceholderRow = Record<string, string> & { id: string };
+
 export default function AdminPlaceholderTable({ title, columns, rows, action, note }: AdminPlaceholderTableConfig) {
+  const normalizedRows = rows.map((row, rowIndex) => {
+    const values = row.split("|");
+    return columns.reduce<PlaceholderRow>((record, column, columnIndex) => {
+      record[column] = values[columnIndex] ?? "";
+      return record;
+    }, { id: `${title}-${rowIndex}` });
+  });
+  const dataColumns: DataGridColumn<PlaceholderRow>[] = columns.map((column, index) => ({
+    id: column,
+    header: column,
+    width: index === 0 ? "minmax(180px, 1fr)" : 180,
+    sortable: true,
+    filterable: true,
+    resizable: true,
+    sticky: index === 0 ? "start" : undefined,
+    value: (row) => row[column] ?? ""
+  }));
+
   return (
     <Card title={title} actions={<Button disabled>{action}</Button>}>
-      <div className="alert info">This view is laid out for production use, but the corresponding backend list/write endpoints still need to be added.</div>
+      <DismissibleAlert tone="info">This view is laid out for production use, but the corresponding backend list/write endpoints still need to be added.</DismissibleAlert>
       {note && <p className="muted">{note}</p>}
-      <div className="app-table-wrap compact-table-wrap">
-        <table className="app-table module-table">
-          <thead><tr>{columns.map((column) => <th key={column}>{column}</th>)}</tr></thead>
-          <tbody>
-            {rows.map((row) => <tr key={row}>{row.split("|").map((cell, index) => <td key={`${row}-${index}`}>{cell}</td>)}</tr>)}
-          </tbody>
-        </table>
-      </div>
+      <DataGrid
+        id={`admin-${slugify(title)}`}
+        rows={normalizedRows}
+        columns={dataColumns}
+        getRowKey={(row) => row.id}
+        emptyText="No rows configured."
+        className="compact-table-wrap module-table"
+      />
     </Card>
   );
 }
+
+function slugify(value: string): string {
+  return value.toLowerCase().replace(/[^a-z0-9]+/g, "-").replace(/(^-|-$)/g, "");
+}

src/features/campaigns/AttachmentsDataPage.tsx

@@ -8,11 +8,13 @@ import LoadingFrame from "../../components/LoadingFrame";
 import LockedVersionNotice from "./components/LockedVersionNotice";
 import VersionLine from "./components/VersionLine";
 import ToggleSwitch from "../../components/ToggleSwitch";
+import DismissibleAlert from "../../components/DismissibleAlert";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 import { useCampaignWorkspaceData } from "./hooks/useCampaignWorkspaceData";
 import { useCampaignDraftEditor } from "./hooks/useCampaignDraftEditor";
 import { asRecord, isAuditLockedVersion } from "./utils/campaignView";
 import { updateNested } from "./utils/draftEditor";
-import { AttachmentRulesTable } from "./components/AttachmentRulesOverlay";
+import { AttachmentRulesDataGrid } from "./components/AttachmentRulesOverlay";
 import { countIndividualAttachmentRules, createAttachmentBasePath, createAttachmentRule, ensureAttachmentBasePaths, mockAttachmentPathOptions, normalizeAttachmentBasePaths, normalizeAttachmentRules, summarizeAttachmentRules, type AttachmentBasePath } from "./utils/attachments";
 
 type PathChooserState = { index: number };
@@ -84,8 +86,8 @@ export default function AttachmentsDataPage({ settings, campaignId }: { settings
         </div>
       </div>
 
-      {error && <div className="alert danger">{error}</div>}
-      {localError && <div className="alert danger">{localError}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
+      {localError && <DismissibleAlert tone="danger" resetKey={localError}>{localError}</DismissibleAlert>}
       {locked && <LockedVersionNotice settings={settings} campaignId={campaignId} version={version} reload={reload} message="Create an editable copy before changing attachments." />}
 
       <LoadingFrame loading={loading || !draft} label="Loading campaign draft…">
@@ -94,61 +96,26 @@ export default function AttachmentsDataPage({ settings, campaignId }: { settings
             title="Attachment sources"
             actions={<Button variant="primary" onClick={addBasePath} disabled={locked}>Add base path</Button>}
           >
-            <div className="app-table-wrap attachment-sources-table-wrap">
-              <table className="app-table attachment-sources-table">
-                <thead>
-                  <tr>
-                    <th>Name</th>
-                    <th>Path</th>
-                    <th>Individual attachments</th>
-                    <th>Unsent warning</th>
-                    <th></th>
-                  </tr>
-                </thead>
-                <tbody>
-                  {basePaths.map((basePath, index) => (
-                    <tr key={basePath.id}>
-                      <td><input value={basePath.name} disabled={locked} placeholder="Campaign files" onChange={(event) => patchBasePath(index, { name: event.target.value })} /></td>
-                      <td>
-                        <div className="field-with-action">
-                          <input
-                            className="chooser-display-input"
-                            value={basePath.path}
-                            disabled={locked}
-                            readOnly
-                            tabIndex={-1}
-                            placeholder="attachments"
-                            onClick={() => !locked && setPathChooser({ index })}
-                            onKeyDown={(event) => {
-                              if (!locked && (event.key === "Enter" || event.key === " ")) {
-                                event.preventDefault();
-                                setPathChooser({ index });
-                              }
-                            }}
-                          />
-                          <Button onClick={() => setPathChooser({ index })} disabled={locked}>Choose</Button>
-                        </div>
-                      </td>
-                      <td><ToggleSwitch label="Individual" checked={Boolean(basePath.allow_individual)} disabled={locked} onChange={(checked) => patchBasePath(index, { allow_individual: checked })} /></td>
-                      <td><ToggleSwitch label="Unsent" checked={Boolean(basePath.unsent_warning)} disabled={locked} onChange={(checked) => patchBasePath(index, { unsent_warning: checked })} /></td>
-                      <td className="table-action-cell"><Button variant="danger" onClick={() => removeBasePath(index)} disabled={locked || basePaths.length <= 1}>Remove</Button></td>
-                    </tr>
-                  ))}
-                </tbody>
-              </table>
-            </div>
+            <DataGrid
+              id={`campaign-${campaignId}-attachment-sources`}
+              rows={basePaths}
+              columns={attachmentSourceColumns({ locked, basePaths, patchBasePath, removeBasePath, setPathChooser })}
+              getRowKey={(basePath) => basePath.id}
+              emptyText="No attachment sources configured."
+              className="attachment-sources-table-wrap attachment-sources-table"
+            />
           </Card>
 
           <Card
             title="Global Attachments"
             actions={<Button variant="primary" onClick={addGlobalAttachmentRule} disabled={locked}>Add file</Button>}
           >
-            <AttachmentRulesTable
+            <AttachmentRulesDataGrid
+              id={`campaign-${campaignId}-global-attachments`}
               rules={globalRules}
               disabled={locked}
               emptyText="No global attachments are configured yet. Add files here only if every message should include them."
               basePaths={basePaths}
-              showAddButton={false}
               onChange={(rules) => patch(["attachments", "global"], rules)}
             />
           </Card>
@@ -182,6 +149,52 @@ export default function AttachmentsDataPage({ settings, campaignId }: { settings
   );
 }
 
+type AttachmentSourceColumnContext = {
+  locked: boolean;
+  basePaths: AttachmentBasePath[];
+  patchBasePath: (index: number, patch: Partial<AttachmentBasePath>) => void;
+  removeBasePath: (index: number) => void;
+  setPathChooser: (state: PathChooserState | null) => void;
+};
+
+function attachmentSourceColumns({ locked, basePaths, patchBasePath, removeBasePath, setPathChooser }: AttachmentSourceColumnContext): DataGridColumn<AttachmentBasePath>[] {
+  return [
+    { id: "name", header: "Name", width: 220, resizable: true, sortable: true, filterable: true, sticky: "start", render: (basePath, index) => <input value={basePath.name} disabled={locked} placeholder="Campaign files" onChange={(event) => patchBasePath(index, { name: event.target.value })} />, value: (basePath) => basePath.name },
+    {
+      id: "path",
+      header: "Path",
+      width: "minmax(260px, 1fr)",
+      resizable: true,
+      sortable: true,
+      filterable: true,
+      render: (basePath, index) => (
+        <div className="field-with-action">
+          <input
+            className="chooser-display-input"
+            value={basePath.path}
+            disabled={locked}
+            readOnly
+            tabIndex={-1}
+            placeholder="attachments"
+            onClick={() => !locked && setPathChooser({ index })}
+            onKeyDown={(event) => {
+              if (!locked && (event.key === "Enter" || event.key === " ")) {
+                event.preventDefault();
+                setPathChooser({ index });
+              }
+            }}
+          />
+          <Button onClick={() => setPathChooser({ index })} disabled={locked}>Choose</Button>
+        </div>
+      ),
+      value: (basePath) => basePath.path
+    },
+    { id: "individual", header: "Individual attachments", width: 260, sortable: true, filterable: true, render: (basePath, index) => <ToggleSwitch label="Individual" checked={Boolean(basePath.allow_individual)} disabled={locked} onChange={(checked) => patchBasePath(index, { allow_individual: checked })} />, value: (basePath) => basePath.allow_individual ? "individual" : "global only" },
+    { id: "unsent_warning", header: "Unsent warning", width: 200, sortable: true, filterable: true, render: (basePath, index) => <ToggleSwitch label="Unsent" checked={Boolean(basePath.unsent_warning)} disabled={locked} onChange={(checked) => patchBasePath(index, { unsent_warning: checked })} />, value: (basePath) => basePath.unsent_warning ? "warn" : "off" },
+    { id: "actions", header: "Actions", width: 120, sticky: "end", render: (_basePath, index) => <Button variant="danger" onClick={() => removeBasePath(index)} disabled={locked || basePaths.length <= 1}>Remove</Button> }
+  ];
+}
+
 function MockPathChooserOverlay({ onClose, onSelect }: { onClose: () => void; onSelect: (path: Partial<AttachmentBasePath>) => void }) {
   return createPortal(
     <div className="overlay-backdrop" role="dialog" aria-modal="true" aria-labelledby="mock-path-chooser-title">

src/features/campaigns/CampaignAuditPage.tsx

@@ -1,6 +1,7 @@
 import type { ApiSettings } from "../../types";
 import Button from "../../components/Button";
 import Card from "../../components/Card";
+import DismissibleAlert from "../../components/DismissibleAlert";
 import PageTitle from "../../components/PageTitle";
 import VersionLine from "./components/VersionLine";
 import LoadingFrame from "../../components/LoadingFrame";
@@ -22,7 +23,7 @@ export default function CampaignAuditPage({ settings, campaignId }: { settings:
         </div>
       </div>
 
-      {error && <div className="alert danger">{error}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
 
       <LoadingFrame loading={loading} label="Loading audit data…">
       <Card title="Recent audit events">

src/features/campaigns/CampaignFieldsPage.tsx

@@ -12,6 +12,8 @@ import { useCampaignDraftEditor } from "./hooks/useCampaignDraftEditor";
 import { asRecord, isAuditLockedVersion, isRecord } from "./utils/campaignView";
 import { getBool, getText, updateNested } from "./utils/draftEditor";
 import FieldValueInput from "./components/FieldValueInput";
+import DismissibleAlert from "../../components/DismissibleAlert";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 import { fieldTypeOptions, humanizeFieldName, normalizeFieldType, type CampaignFieldDefinition } from "./utils/fieldDefinitions";
 
 
@@ -154,9 +156,9 @@ export default function CampaignFieldsPage({ settings, campaignId }: { settings:
         </div>
       </div>
 
-      {error && <div className="alert danger">{error}</div>}
-      {localError && <div className="alert danger">{localError}</div>}
-      {fieldNameWarning && <div className="alert warning">{fieldNameWarning}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
+      {localError && <DismissibleAlert tone="danger" resetKey={localError}>{localError}</DismissibleAlert>}
+      {fieldNameWarning && <DismissibleAlert tone="warning" resetKey={fieldNameWarning}>{fieldNameWarning}</DismissibleAlert>}
       {locked && <LockedVersionNotice settings={settings} campaignId={campaignId} version={version} reload={reload} message="Create an editable copy before changing fields." />}
 
       <LoadingFrame loading={loading || !draft} label="Loading campaign draft…">
@@ -165,42 +167,14 @@ export default function CampaignFieldsPage({ settings, campaignId }: { settings:
             title="Fields and global values"
             actions={<Button variant="primary" onClick={addField} disabled={locked}>Add field</Button>}
           >
-            <div className="app-table-wrap field-editor-table-wrap">
-              <table className="app-table field-editor-table">
-                <thead>
-                  <tr>
-                    <th>Field ID</th>
-                    <th>Label</th>
-                    <th>Type</th>
-                    <th>Required</th>
-                    <th>Global value</th>
-                    <th>Recipient override</th>
-                    <th></th>
-                  </tr>
-                </thead>
-                <tbody>
-                  {fields.length === 0 ? (
-                    <tr>
-                      <td colSpan={7} className="empty-table-cell">No campaign fields configured yet.</td>
-                    </tr>
-                  ) : fields.map((field, index) => (
-                    <tr key={`field-row-${index}`}>
-                      <td><input value={field.name} disabled={locked} placeholder="field_name" onChange={(event) => renameField(index, event.target.value)} /></td>
-                      <td><input value={field.label} disabled={locked} placeholder="Display label" onChange={(event) => setField(index, { label: event.target.value })} /></td>
-                      <td>
-                        <select value={field.type} disabled={locked} onChange={(event) => setField(index, { type: normalizeFieldType(event.target.value) })}>
-                          {fieldTypeOptions.map((option) => <option key={option} value={option}>{option}</option>)}
-                        </select>
-                      </td>
-                      <td><ToggleSwitch label="Required" checked={field.required} disabled={locked} onChange={(checked) => setField(index, { required: checked })} /></td>
-                      <td><FieldValueInput fieldType={field.type} value={globalValues[field.name]} disabled={locked || !field.name} placeholder="Optional default" onChange={(value) => setGlobalValue(field.name, value)} /></td>
-                      <td><ToggleSwitch label="Can override" checked={field.can_override} disabled={locked || !field.name} onChange={(checked) => setOverrideAllowed(index, checked)} /></td>
-                      <td className="table-action-cell"><Button variant="danger" disabled={locked} onClick={() => deleteField(index)}>Remove</Button></td>
-                    </tr>
-                  ))}
-                </tbody>
-              </table>
-            </div>
+            <DataGrid
+              id={`campaign-${campaignId}-fields`}
+              rows={fields}
+              columns={fieldColumns({ locked, globalValues, renameField, setField, setGlobalValue, setOverrideAllowed, deleteField })}
+              getRowKey={(_field, index) => `field-row-${index}`}
+              emptyText="No campaign fields configured yet."
+              className="field-editor-table-wrap field-editor-table"
+            />
           </Card>
 
           <div className="button-row page-bottom-actions">
@@ -212,6 +186,28 @@ export default function CampaignFieldsPage({ settings, campaignId }: { settings:
   );
 }
 
+type FieldColumnContext = {
+  locked: boolean;
+  globalValues: Record<string, unknown>;
+  renameField: (index: number, nextName: string) => void;
+  setField: (index: number, patchValue: Partial<CampaignFieldDefinition>) => void;
+  setGlobalValue: (key: string, value: unknown) => void;
+  setOverrideAllowed: (index: number, allowed: boolean) => void;
+  deleteField: (index: number) => void;
+};
+
+function fieldColumns({ locked, globalValues, renameField, setField, setGlobalValue, setOverrideAllowed, deleteField }: FieldColumnContext): DataGridColumn<CampaignFieldDefinition>[] {
+  return [
+    { id: "name", header: "Field ID", width: 190, resizable: true, sortable: true, filterable: true, sticky: "start", render: (field, index) => <input value={field.name} disabled={locked} placeholder="field_name" onChange={(event) => renameField(index, event.target.value)} />, value: (field) => field.name },
+    { id: "label", header: "Label", width: 210, resizable: true, sortable: true, filterable: true, render: (field, index) => <input value={field.label} disabled={locked} placeholder="Display label" onChange={(event) => setField(index, { label: event.target.value })} />, value: (field) => field.label },
+    { id: "type", header: "Type", width: 140, sortable: true, filterable: true, render: (field, index) => <select value={field.type} disabled={locked} onChange={(event) => setField(index, { type: normalizeFieldType(event.target.value) })}>{fieldTypeOptions.map((option) => <option key={option} value={option}>{option}</option>)}</select>, value: (field) => field.type },
+    { id: "required", header: "Required", width: 140, sortable: true, filterable: true, render: (field, index) => <ToggleSwitch label="Required" checked={field.required} disabled={locked} onChange={(checked) => setField(index, { required: checked })} />, value: (field) => field.required ? "required" : "optional" },
+    { id: "global_value", header: "Global value", width: 220, resizable: true, filterable: true, render: (field) => <FieldValueInput fieldType={field.type} value={globalValues[field.name]} disabled={locked || !field.name} placeholder="Optional default" onChange={(value) => setGlobalValue(field.name, value)} />, value: (field) => String(globalValues[field.name] ?? "") },
+    { id: "override", header: "Recipient override", width: 170, sortable: true, filterable: true, render: (field, index) => <ToggleSwitch label="Can override" checked={field.can_override} disabled={locked || !field.name} onChange={(checked) => setOverrideAllowed(index, checked)} />, value: (field) => field.can_override ? "can override" : "locked" },
+    { id: "actions", header: "Actions", width: 120, sticky: "end", render: (_field, index) => <Button variant="danger" disabled={locked} onClick={() => deleteField(index)}>Remove</Button> }
+  ];
+}
+
 function normalizeFields(value: unknown): CampaignFieldDefinition[] {
   if (!Array.isArray(value)) return [];
   return value.filter(isRecord).map((field) => ({

src/features/campaigns/CampaignJsonView.tsx

@@ -1,6 +1,7 @@
 import type { ApiSettings } from "../../types";
 import Card from "../../components/Card";
 import Button from "../../components/Button";
+import DismissibleAlert from "../../components/DismissibleAlert";
 import PageTitle from "../../components/PageTitle";
 import VersionLine from "./components/VersionLine";
 import LoadingFrame from "../../components/LoadingFrame";
@@ -27,7 +28,7 @@ export default function CampaignJsonView({ settings, campaignId }: { settings: A
           <Button onClick={() => downloadJson(filename, campaignJson)} disabled={!version}>Download JSON</Button>
         </div>
       </div>
-      {error && <div className="alert danger">{error}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
       <LoadingFrame loading={loading} label="Loading JSON…">
       <Card>
         {!loading || version ? <pre className="code-panel">{JSON.stringify(campaignJson, null, 2)}</pre> : <pre className="code-panel">{"{}"}</pre>}

src/features/campaigns/CampaignListPage.tsx

@@ -6,6 +6,8 @@ import Button from "../../components/Button";
 import StatusBadge from "../../components/StatusBadge";
 import PageTitle from "../../components/PageTitle";
 import LoadingFrame from "../../components/LoadingFrame";
+import DismissibleAlert from "../../components/DismissibleAlert";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 import { createNewCampaign, listCampaigns } from "../../api/campaigns";
 import type { CampaignListItem } from "../../types";
 
@@ -51,13 +53,69 @@ export default function CampaignListPage({ settings }: { settings: ApiSettings }
     load();
   }, [settings.apiBaseUrl, settings.apiKey, settings.accessToken]);
 
+  const columns: DataGridColumn<CampaignListItem>[] = [
+    {
+      id: "campaign",
+      header: "Campaign",
+      width: "minmax(260px, 1.8fr)",
+      sortable: true,
+      filterable: true,
+      sticky: "start",
+      render: (campaign) => (
+        <div>
+          <Link className="table-primary-link" to={`/campaigns/${campaign.id}`}>
+            {campaign.name || campaign.external_id || campaign.id}
+          </Link>
+          <div className="table-subline">{campaign.description || campaign.external_id || campaign.id}</div>
+        </div>
+      ),
+      value: (campaign) => `${campaign.name ?? ""} ${campaign.external_id ?? ""} ${campaign.id}`
+    },
+    {
+      id: "status",
+      header: "Status",
+      width: 150,
+      sortable: true,
+      filterable: true,
+      render: (campaign) => <StatusBadge status={campaign.status || "draft"} />,
+      value: (campaign) => campaign.status || "draft"
+    },
+    {
+      id: "current_version",
+      header: "Current version",
+      width: 170,
+      sortable: true,
+      filterable: true,
+      className: "version-cell mono-small",
+      render: (campaign) => <span title={campaign.current_version_id || undefined}>{campaign.current_version_id ? shortId(campaign.current_version_id) : "—"}</span>,
+      value: (campaign) => campaign.current_version_id ?? ""
+    },
+    {
+      id: "updated",
+      header: "Updated",
+      width: 190,
+      sortable: true,
+      filterable: true,
+      className: "updated-cell",
+      render: (campaign) => formatDateTime(campaign.updated_at ?? campaign.updatedAt ?? campaign.created_at),
+      value: (campaign) => campaign.updated_at ?? campaign.updatedAt ?? campaign.created_at ?? ""
+    },
+    {
+      id: "actions",
+      header: "Actions",
+      width: 110,
+      sticky: "end",
+      render: (campaign) => <Link to={`/campaigns/${campaign.id}`}><Button variant="primary">Open</Button></Link>
+    }
+  ];
+
   return (
     <div className="content-pad campaigns-page">
       {!hasAuth && (
-        <div className="alert warning">Sign in with your user account or configure an automation API key under Settings to load campaigns.</div>
+        <DismissibleAlert tone="warning">Sign in with your user account or configure an automation API key under Settings to load campaigns.</DismissibleAlert>
       )}
 
-      {error && <div className="alert danger">{error}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
 
       <div className="page-heading split workspace-heading">
         <div>
@@ -74,7 +132,7 @@ export default function CampaignListPage({ settings }: { settings: ApiSettings }
 
       <Card>
         <LoadingFrame loading={loading} label="Loading campaigns…">
-        {campaigns.length === 0 && (
+        {campaigns.length === 0 ? (
           <div className="empty-state">
             <h2>No campaigns yet</h2>
             <p>Start with a guided campaign draft. The WebUI will create a portable campaign JSON in the background.</p>
@@ -82,41 +140,15 @@ export default function CampaignListPage({ settings }: { settings: ApiSettings }
               Create first campaign
             </Button>
           </div>
-        )}
-        {campaigns.length > 0 && (
-          <div className="app-table-wrap campaign-table-wrap">
-            <table className="app-table campaign-table">
-              <thead>
-                <tr>
-                  <th>Campaign</th>
-                  <th>Status</th>
-                  <th>Current version</th>
-                  <th>Updated</th>
-                  <th aria-label="Open"></th>
-                </tr>
-              </thead>
-              <tbody>
-                {campaigns.map((campaign) => (
-                  <tr key={campaign.id}>
-                    <td>
-                      <Link className="table-primary-link" to={`/campaigns/${campaign.id}`}>
-                        {campaign.name || campaign.external_id || campaign.id}
-                      </Link>
-                      <div className="table-subline">{campaign.description || campaign.external_id || campaign.id}</div>
-                    </td>
-                    <td><StatusBadge status={campaign.status || "draft"} /></td>
-                    <td className="version-cell mono-small" title={campaign.current_version_id || undefined}>
-                      {campaign.current_version_id ? shortId(campaign.current_version_id) : "—"}
-                    </td>
-                    <td className="updated-cell">{formatDateTime(campaign.updated_at ?? campaign.updatedAt ?? campaign.created_at)}</td>
-                    <td>
-                      <Link to={`/campaigns/${campaign.id}`}><Button variant="primary">Open</Button></Link>
-                    </td>
-                  </tr>
-                ))}
-              </tbody>
-            </table>
-          </div>
+        ) : (
+          <DataGrid
+            id="campaigns"
+            rows={campaigns}
+            columns={columns}
+            getRowKey={(campaign) => campaign.id}
+            className="campaign-table-wrap"
+            emptyText="No campaigns found."
+          />
         )}
         </LoadingFrame>
       </Card>

src/features/campaigns/CampaignOverviewPage.tsx

@@ -8,6 +8,8 @@ import FormField from "../../components/FormField";
 import LoadingFrame from "../../components/LoadingFrame";
 import PageTitle from "../../components/PageTitle";
 import StatusBadge from "../../components/StatusBadge";
+import DismissibleAlert from "../../components/DismissibleAlert";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 import { publishCampaignVersion, updateCampaignMetadata, type CampaignVersionListItem } from "../../api/campaigns";
 import { useCampaignWorkspaceData } from "./hooks/useCampaignWorkspaceData";
 import { canUnlockValidationVersion, formatDateTime, isFinalLockedVersion, isUserLockedVersion, isVersionReadyForDelivery, summaryValue } from "./utils/campaignView";
@@ -94,8 +96,8 @@ export default function CampaignOverviewPage({ settings, campaignId }: { setting
         </div>
       </div>
 
-      {error && <div className="alert danger">{error}</div>}
-      {message && <div className="alert success">{message}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
+      {message && <DismissibleAlert tone="success" resetKey={message}>{message}</DismissibleAlert>}
 
       <LoadingFrame loading={loading} label="Loading campaign overview…">
         <Card title="Campaign identity">
@@ -118,48 +120,15 @@ export default function CampaignOverviewPage({ settings, campaignId }: { setting
         </Card>
 
         <Card title="Version history">
-          <div className="app-table-wrap">
-            <table className="app-table version-history-table">
-              <thead>
-                <tr>
-                  <th>Version</th>
-                  <th>State</th>
-                  <th>Lock</th>
-                  <th>Validation</th>
-                  <th>Build</th>
-                  <th>Updated</th>
-                  <th aria-label="Actions"></th>
-                </tr>
-              </thead>
-              <tbody>
-                {versions.length === 0 && (
-                  <tr><td colSpan={7} className="muted">No versions found.</td></tr>
-                )}
-                {versions.map((version) => {
-                  const isCurrentVersion = version.id === data.currentVersion?.id;
-                  return (
-                  <tr key={version.id} className={isCurrentVersion ? "current-version-row" : undefined}>
-                    <td>#{version.version_number}</td>
-                    <td><StatusBadge status={version.workflow_state ?? "editing"} /></td>
-                    <td>{versionLockLabel(version)}</td>
-                    <td>{validationLabel(version)}</td>
-                    <td>{buildLabel(version)}</td>
-                    <td>{formatDateTime(version.updated_at)}</td>
-                    <td className="table-action-cell">
-                      <div className="button-row compact-actions">
-                        <Link to={`review?version=${version.id}`}><Button variant="primary">Open</Button></Link>
-                        <Button
-                          onClick={() => setLockingVersion(version)}
-                          disabled={isUserLockedVersion(version) || isFinalLockedVersion(version) || canUnlockValidationVersion(version)}
-                        >Lock</Button>
-                      </div>
-                    </td>
-                  </tr>
-                  );
-                })}
-              </tbody>
-            </table>
-          </div>
+          <DataGrid
+            id={`campaign-${campaignId}-versions`}
+            rows={versions}
+            columns={versionColumns(setLockingVersion)}
+            getRowKey={(version) => version.id}
+            emptyText="No versions found."
+            className="version-history-table"
+            rowClassName={(version) => version.id === data.currentVersion?.id ? "current-version-row" : undefined}
+          />
         </Card>
 
         <Card title="Current version state">
@@ -186,6 +155,32 @@ export default function CampaignOverviewPage({ settings, campaignId }: { setting
   );
 }
 
+function versionColumns(setLockingVersion: (version: CampaignVersionListItem) => void): DataGridColumn<CampaignVersionListItem>[] {
+  return [
+    { id: "version", header: "Version", width: 110, sortable: true, filterable: true, sticky: "start", render: (version) => `#${version.version_number}`, value: (version) => version.version_number ?? 0 },
+    { id: "state", header: "State", width: 140, sortable: true, filterable: true, render: (version) => <StatusBadge status={version.workflow_state ?? "editing"} />, value: (version) => version.workflow_state ?? "editing" },
+    { id: "lock", header: "Lock", width: 170, sortable: true, filterable: true, render: versionLockLabel, value: versionLockLabel },
+    { id: "validation", header: "Validation", width: 170, sortable: true, filterable: true, render: validationLabel, value: validationLabel },
+    { id: "build", header: "Build", width: 140, sortable: true, filterable: true, render: buildLabel, value: buildLabel },
+    { id: "updated", header: "Updated", width: 190, sortable: true, filterable: true, render: (version) => formatDateTime(version.updated_at), value: (version) => version.updated_at ?? "" },
+    {
+      id: "actions",
+      header: "Actions",
+      width: 190,
+      sticky: "end",
+      render: (version) => (
+        <div className="button-row compact-actions">
+          <Link to={`send?version=${version.id}`}><Button variant="primary">Open</Button></Link>
+          <Button
+            onClick={() => setLockingVersion(version)}
+            disabled={isUserLockedVersion(version) || isFinalLockedVersion(version) || canUnlockValidationVersion(version)}
+          >Lock</Button>
+        </div>
+      )
+    }
+  ];
+}
+
 function versionLockLabel(version: CampaignVersionListItem): string {
   if (isUserLockedVersion(version)) return "User locked";
   if (isFinalLockedVersion(version)) return "Final";

src/features/campaigns/CampaignReportPage.tsx

@@ -1,6 +1,7 @@
 import type { ApiSettings } from "../../types";
 import Card from "../../components/Card";
 import Button from "../../components/Button";
+import DismissibleAlert from "../../components/DismissibleAlert";
 import PageTitle from "../../components/PageTitle";
 import VersionLine from "./components/VersionLine";
 import LoadingFrame from "../../components/LoadingFrame";
@@ -23,7 +24,7 @@ export default function CampaignReportPage({ settings, campaignId }: { settings:
           <Button onClick={reload} disabled={loading}>Reload</Button>
         </div>
       </div>
-      {error && <div className="alert danger">{error}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
       <LoadingFrame loading={loading} label="Loading report data…">
       <div className="dashboard-grid">
         <Card title="Report summary">

src/features/campaigns/CampaignWorkspace.tsx

@@ -73,6 +73,7 @@ function CampaignWorkspaceInner({ settings }: { settings: ApiSettings }) {
           <Route path="mail-settings" element={<MailSettingsPage settings={settings} campaignId={campaignId || ""} />} />
           <Route path="server-settings" element={<Navigate to="../mail-settings" replace />} />
           <Route path="global-settings" element={<GlobalSettingsPage settings={settings} campaignId={campaignId || ""} />} />
+          <Route path="review" element={<Navigate to="../send" replace />} />
           <Route path="send" element={<SendDataPage settings={settings} campaignId={campaignId || ""} />} />
           <Route path="report" element={<CampaignReportPage settings={settings} campaignId={campaignId || ""} />} />
           <Route path="reports" element={<Navigate to="../report" replace />} />
@@ -85,6 +86,8 @@ function CampaignWorkspaceInner({ settings }: { settings: ApiSettings }) {
           <Route path="campaign" element={<Navigate to="../data" replace />} />
           <Route path="mail" element={<Navigate to="../mail-settings" replace />} />
           <Route path="settings" element={<Navigate to="../global-settings" replace />} />
+          <Route path="Review" element={<Navigate to="../" replace />} />
+          <Route path="*" element={<Navigate to="../" replace />} />
         </Routes>
       </section>
     </div>
@@ -104,7 +107,7 @@ function sectionFromPath(pathname: string): CampaignWorkspaceSection {
   if (section === "template") return "template";
   if (section === "files" || section === "attachments") return "files";
   if (section === "mail-settings" || section === "server-settings" || section === "mail") return "mail-settings";
-  if (section === "review") return "review";
+  if (section === "review") return "send";
   if (section === "send") return "send";
   if (section === "report" || section === "reports") return "report";
   if (section === "audit") return "audit";

src/features/campaigns/GlobalSettingsPage.tsx

@@ -3,6 +3,7 @@ import type { ApiSettings } from "../../types";
 import Button from "../../components/Button";
 import Card from "../../components/Card";
 import FormField from "../../components/FormField";
+import DismissibleAlert from "../../components/DismissibleAlert";
 import PageTitle from "../../components/PageTitle";
 import LoadingFrame from "../../components/LoadingFrame";
 import LockedVersionNotice from "./components/LockedVersionNotice";
@@ -67,8 +68,8 @@ export default function GlobalSettingsPage({ settings, campaignId }: { settings:
         </div>
       </div>
 
-      {error && <div className="alert danger">{error}</div>}
-      {localError && <div className="alert danger">{localError}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
+      {localError && <DismissibleAlert tone="danger" resetKey={localError}>{localError}</DismissibleAlert>}
       {locked && <LockedVersionNotice settings={settings} campaignId={campaignId} version={version} reload={reload} message="Create an editable copy before changing global settings." />}
 
       <LoadingFrame loading={loading || !draft} label="Loading campaign draft…">

src/features/campaigns/MailSettingsPage.tsx

@@ -9,6 +9,8 @@ import LockedVersionNotice from "./components/LockedVersionNotice";
 import VersionLine from "./components/VersionLine";
 import MessagePreviewOverlay, { type MessagePreviewAttachment } from "./components/MessagePreviewOverlay";
 import ToggleSwitch from "../../components/ToggleSwitch";
+import DismissibleAlert from "../../components/DismissibleAlert";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 import { clearMockMailboxMessages, getMockMailboxMessage, listImapFolders, listMockMailboxMessages, testImapSettings, testSmtpSettings, updateMockMailboxFailures, type MailConnectionTestResponse, type MailImapFolderListResponse, type MailSecurity, type MockMailboxMessage } from "../../api/mail";
 import { useCampaignWorkspaceData } from "./hooks/useCampaignWorkspaceData";
 import { useCampaignDraftEditor } from "./hooks/useCampaignDraftEditor";
@@ -259,8 +261,8 @@ export default function MailSettingsPage({ settings, campaignId }: { settings: A
         </div>
       </div>
 
-      {error && <div className="alert danger">{error}</div>}
-      {localError && <div className="alert danger">{localError}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
+      {localError && <DismissibleAlert tone="danger" resetKey={localError}>{localError}</DismissibleAlert>}
       {locked && <LockedVersionNotice settings={settings} campaignId={campaignId} version={version} reload={reload} message="Create an editable copy before changing server settings." />}
 
       <LoadingFrame loading={loading || !draft} label="Loading campaign draft…">
@@ -329,36 +331,15 @@ export default function MailSettingsPage({ settings, campaignId }: { settings: A
                 <Button variant="danger" onClick={clearMockMailbox} disabled={mailActionState === "mock" || mockMessages.length === 0}>Clear</Button>
               </div>
             </div>
-            {mockError && <div className="alert danger">{mockError}</div>}
-            <div className="table-wrap">
-              <table className="data-table">
-                <thead>
-                  <tr>
-                    <th>Kind</th>
-                    <th>Received</th>
-                    <th>Subject</th>
-                    <th>Envelope</th>
-                    <th>Attachments</th>
-                    <th>Actions</th>
-                  </tr>
-                </thead>
-                <tbody>
-                  {mockMessages.map((message) => (
-                    <tr key={message.id}>
-                      <td><span className="status-badge neutral">{message.kind === "imap_append" ? "IMAP" : "SMTP"}</span></td>
-                      <td>{formatMockDate(message.created_at)}</td>
-                      <td>{message.subject || "—"}</td>
-                      <td>{message.envelope_from || message.folder || "—"} → {(message.envelope_recipients || []).join(", ") || message.folder || "—"}</td>
-                      <td>{message.attachment_count ?? 0}</td>
-                      <td><Button onClick={() => openMockMessage(message.id)}>Open</Button></td>
-                    </tr>
-                  ))}
-                  {mockMessages.length === 0 && (
-                    <tr><td colSpan={6}>No mock messages captured yet.</td></tr>
-                  )}
-                </tbody>
-              </table>
-            </div>
+            {mockError && <DismissibleAlert tone="danger" resetKey={mockError}>{mockError}</DismissibleAlert>}
+            <DataGrid
+              id={`campaign-${campaignId}-server-mock-mailbox`}
+              rows={mockMessages}
+              columns={mockMailboxColumns(openMockMessage)}
+              getRowKey={(message) => message.id}
+              emptyText="No mock messages captured yet."
+              className="data-table compact-table"
+            />
 
           </Card>
 
@@ -415,6 +396,17 @@ function formatMockDate(value: string): string {
 }
 
 
+function mockMailboxColumns(openMockMessage: (id: string) => Promise<void>): DataGridColumn<MockMailboxMessage>[] {
+  return [
+    { id: "kind", header: "Kind", width: 110, sortable: true, filterable: true, sticky: "start", render: (message) => <span className="status-badge neutral">{message.kind === "imap_append" ? "IMAP" : "SMTP"}</span>, value: (message) => message.kind === "imap_append" ? "IMAP" : "SMTP" },
+    { id: "received", header: "Received", width: 180, sortable: true, filterable: true, value: (message) => formatMockDate(message.created_at), sortValue: (message) => message.created_at ?? "" },
+    { id: "subject", header: "Subject", width: "minmax(240px, 1fr)", sortable: true, filterable: true, value: (message) => message.subject || "—" },
+    { id: "envelope", header: "Envelope", width: 300, resizable: true, filterable: true, value: (message) => `${message.envelope_from || message.folder || "—"} → ${(message.envelope_recipients || []).join(", ") || message.folder || "—"}` },
+    { id: "attachments", header: "Attachments", width: 130, sortable: true, filterable: true, value: (message) => String(message.attachment_count ?? 0) },
+    { id: "actions", header: "Actions", width: 110, sticky: "end", render: (message) => <Button onClick={() => openMockMessage(message.id)}>Open</Button> }
+  ];
+}
+
 function MailActionResult({ result }: { result: MailConnectionTestResponse | null }) {
   if (!result) return null;
   const authenticated = result.details?.authenticated;

src/features/campaigns/RecipientDataPage.tsx

@@ -9,6 +9,8 @@ import LockedVersionNotice from "./components/LockedVersionNotice";
 import VersionLine from "./components/VersionLine";
 import ToggleSwitch from "../../components/ToggleSwitch";
 import EmailAddressInput from "../../components/email/EmailAddressInput";
+import DismissibleAlert from "../../components/DismissibleAlert";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 import { useCampaignWorkspaceData } from "./hooks/useCampaignWorkspaceData";
 import { useCampaignDraftEditor } from "./hooks/useCampaignDraftEditor";
 import { asArray, asRecord, isAuditLockedVersion } from "./utils/campaignView";
@@ -134,8 +136,8 @@ export default function RecipientDataPage({ settings, campaignId }: { settings:
         </div>
       </div>
 
-      {error && <div className="alert danger">{error}</div>}
-      {localError && <div className="alert danger">{localError}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
+      {localError && <DismissibleAlert tone="danger" resetKey={localError}>{localError}</DismissibleAlert>}
       {locked && <LockedVersionNotice settings={settings} campaignId={campaignId} version={version} reload={reload} message="Create an editable copy before changing sender or recipient profiles." />}
 
       <LoadingFrame loading={loading || !draft} label="Loading campaign draft…">
@@ -224,51 +226,17 @@ export default function RecipientDataPage({ settings, campaignId }: { settings:
           >
             {inlineEntries.length === 0 && !source.type && <p className="muted">No recipient profiles are stored in the current version yet.</p>}
             {inlineEntries.length === 0 && Boolean(source.type) && (
-              <div className="alert info">This campaign references an external recipient source. A parsed preview table will be added when file/source preview support is implemented.</div>
+              <DismissibleAlert tone="info">This campaign references an external recipient source. A parsed preview table will be added when file/source preview support is implemented.</DismissibleAlert>
             )}
             {inlineEntries.length > 0 && (
-              <div className="app-table-wrap recipient-table-wrap">
-                <table className="app-table recipient-table recipient-address-table">
-                  <thead>
-                    <tr>
-                      <th>#</th>
-                      {entryAddressColumns.map((column) => <th key={column.key}>{column.label}</th>)}
-                      <th>Active</th>
-                      <th aria-label="Actions"></th>
-                    </tr>
-                  </thead>
-                  <tbody>
-                    {inlineEntries.slice(0, 100).map((entry, index) => (
-                      <tr key={String(entry.id || index)}>
-                        <td className="mono-small">{index + 1}</td>
-                        {entryAddressColumns.map((column) => (
-                          <td key={column.key}>
-                            <EmailAddressInput
-                              value={getEntryAddresses(entry, column.key)}
-                              suggestions={addressSuggestions}
-                              allowMultiple={column.allowMultiple}
-                              compact
-                              disabled={locked}
-                              addLabel={column.addLabel}
-                              emptyText={column.emptyText}
-                              onChange={(addresses) => updateEntryAddressList(index, column.key, addresses)}
-                            />
-                          </td>
-                        ))}
-                        <td>
-                          <ToggleSwitch
-                            label="Active"
-                            checked={entry.active !== false}
-                            disabled={locked}
-                            onChange={(checked) => updateEntry(index, (current) => ({ ...current, active: checked }))}
-                          />
-                        </td>
-                        <td className="table-action-cell"><Button variant="danger" onClick={() => removeEntry(index)} disabled={locked}>Remove</Button></td>
-                      </tr>
-                    ))}
-                  </tbody>
-                </table>
-              </div>
+              <DataGrid
+                id={`campaign-${campaignId}-recipient-profiles`}
+                rows={inlineEntries.slice(0, 100)}
+                columns={recipientProfileColumns({ locked, entryAddressColumns, addressSuggestions, updateEntryAddressList, updateEntry, removeEntry })}
+                getRowKey={(entry, index) => String(entry.id || index)}
+                emptyText="No recipient profiles are stored in the current version yet."
+                className="recipient-table-wrap recipient-address-table"
+              />
             )}
           </Card>
 
@@ -281,6 +249,43 @@ export default function RecipientDataPage({ settings, campaignId }: { settings:
   );
 }
 
+type RecipientProfileColumnContext = {
+  locked: boolean;
+  entryAddressColumns: EntryAddressColumn[];
+  addressSuggestions: MailboxAddress[];
+  updateEntryAddressList: (index: number, key: EntryAddressColumn["key"], addresses: MailboxAddress[]) => void;
+  updateEntry: (index: number, updater: (entry: Record<string, unknown>) => Record<string, unknown>) => void;
+  removeEntry: (index: number) => void;
+};
+
+function recipientProfileColumns({ locked, entryAddressColumns, addressSuggestions, updateEntryAddressList, updateEntry, removeEntry }: RecipientProfileColumnContext): DataGridColumn<Record<string, unknown>>[] {
+  return [
+    { id: "number", header: "#", width: 70, sortable: true, sticky: "start", render: (_entry, index) => <span className="mono-small">{index + 1}</span>, value: (_entry, index) => index + 1 },
+    ...entryAddressColumns.map((column): DataGridColumn<Record<string, unknown>> => ({
+      id: column.key,
+      header: column.label,
+      width: column.key === "to" ? "minmax(260px, 1.2fr)" : 250,
+      resizable: true,
+      filterable: true,
+      render: (entry, index) => (
+        <EmailAddressInput
+          value={getEntryAddresses(entry, column.key)}
+          suggestions={addressSuggestions}
+          allowMultiple={column.allowMultiple}
+          compact
+          disabled={locked}
+          addLabel={column.addLabel}
+          emptyText={column.emptyText}
+          onChange={(addresses) => updateEntryAddressList(index, column.key, addresses)}
+        />
+      ),
+      value: (entry) => getEntryAddresses(entry, column.key).map((address) => `${address.name ?? ""} ${address.email ?? ""}`).join(", ")
+    })),
+    { id: "active", header: "Active", width: 130, sortable: true, filterable: true, render: (entry, index) => <ToggleSwitch label="Active" checked={entry.active !== false} disabled={locked} onChange={(checked) => updateEntry(index, (current) => ({ ...current, active: checked }))} />, value: (entry) => entry.active !== false ? "active" : "inactive" },
+    { id: "actions", header: "Actions", width: 120, sticky: "end", render: (_entry, index) => <Button variant="danger" onClick={() => removeEntry(index)} disabled={locked}>Remove</Button> }
+  ];
+}
+
 function getEntryAddresses(entry: Record<string, unknown>, key: EntryAddressColumn["key"]): MailboxAddress[] {
   if (key === "to") {
     const explicit = addressesFromValue(entry.to);

src/features/campaigns/RecipientDetailsPage.tsx

@@ -15,6 +15,8 @@ import AttachmentRulesOverlay from "./components/AttachmentRulesOverlay";
 import { getDraftFields } from "./utils/fieldDefinitions";
 import { getIndividualAttachmentBasePaths, normalizeAttachmentBasePaths, normalizeAttachmentRules, type AttachmentRule } from "./utils/attachments";
 import { addressesFromValue } from "../../utils/emailAddresses";
+import DismissibleAlert from "../../components/DismissibleAlert";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 
 
 export default function RecipientDetailsPage({ settings, campaignId }: { settings: ApiSettings; campaignId: string }) {
@@ -79,8 +81,8 @@ export default function RecipientDetailsPage({ settings, campaignId }: { setting
         </div>
       </div>
 
-      {error && <div className="alert danger">{error}</div>}
-      {localError && <div className="alert danger">{localError}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
+      {localError && <DismissibleAlert tone="danger" resetKey={localError}>{localError}</DismissibleAlert>}
       {locked && <LockedVersionNotice settings={settings} campaignId={campaignId} version={version} reload={reload} message="Create an editable copy before changing recipient data." />}
 
       <LoadingFrame loading={loading || !draft} label="Loading campaign draft…">
@@ -88,59 +90,17 @@ export default function RecipientDetailsPage({ settings, campaignId }: { setting
           <Card title="Recipient field values and attachments">
             {inlineEntries.length === 0 && !source.type && <p className="muted">No recipient profiles are stored in the current version yet. Add recipients first, then maintain their data here.</p>}
             {inlineEntries.length === 0 && Boolean(source.type) && (
-              <div className="alert info">This campaign references an external recipient source. A parsed data preview will be added when file/source preview support is implemented.</div>
+              <DismissibleAlert tone="info">This campaign references an external recipient source. A parsed data preview will be added when file/source preview support is implemented.</DismissibleAlert>
             )}
             {inlineEntries.length > 0 && (
-              <div className="app-table-wrap recipient-table-wrap recipient-data-table-wrap">
-                <table className="app-table recipient-table recipient-data-table">
-                  <thead>
-                    <tr>
-                      <th>#</th>
-                      <th>Recipient</th>
-                      <th>Attachments</th>
-                      {fieldDefinitions.map((field) => <th key={field.name}>{field.label || field.name}</th>)}
-                    </tr>
-                  </thead>
-                  <tbody>
-                    {inlineEntries.slice(0, 100).map((entry, index) => {
-                      const fields = asRecord(entry.fields);
-                      const attachments = normalizeAttachmentRules(entry.attachments);
-                      return (
-                        <tr key={String(entry.id || index)}>
-                          <td className="mono-small recipient-index-cell">{index + 1}</td>
-                          <td className="recipient-data-identity-cell">
-                            <Link className="recipient-data-identity" to="../recipients" title="Open recipient address profile">
-                              <span className="recipient-data-address">{firstRecipientEmail(entry) || "No To address"}</span>
-                              {extraRecipientCount(entry) > 0 && <span className="recipient-extra-bubble">+{extraRecipientCount(entry)}</span>}
-                            </Link>
-                          </td>
-                          <td>
-                            <AttachmentRulesOverlay
-                              title={`Attachments for recipient ${index + 1}`}
-                              rules={attachments}
-                              disabled={locked}
-                              basePaths={individualAttachmentBasePaths}
-                              onChange={(rules) => updateEntryAttachments(index, rules)}
-                            />
-                          </td>
-                          {fieldDefinitions.map((field) => (
-                            <td key={field.name}>
-                              <FieldValueInput
-                                className="recipient-field-input"
-                                fieldType={field.type}
-                                value={fields[field.name]}
-                                disabled={locked || field.can_override === false}
-                                placeholder={field.can_override === false ? "Uses global value" : undefined}
-                                onChange={(value) => updateEntryField(index, field.name, value)}
-                              />
-                            </td>
-                          ))}
-                        </tr>
-                      );
-                    })}
-                  </tbody>
-                </table>
-              </div>
+              <DataGrid
+                id={`campaign-${campaignId}-recipient-data`}
+                rows={inlineEntries.slice(0, 100)}
+                columns={recipientDataColumns({ locked, fieldDefinitions, individualAttachmentBasePaths, updateEntryAttachments, updateEntryField })}
+                getRowKey={(entry, index) => String(entry.id || index)}
+                emptyText="No recipient data found."
+                className="recipient-table-wrap recipient-data-table-wrap recipient-data-table"
+              />
             )}
           </Card>
 
@@ -153,6 +113,77 @@ export default function RecipientDetailsPage({ settings, campaignId }: { setting
   );
 }
 
+type RecipientDataColumnContext = {
+  locked: boolean;
+  fieldDefinitions: ReturnType<typeof getDraftFields>;
+  individualAttachmentBasePaths: ReturnType<typeof getIndividualAttachmentBasePaths>;
+  updateEntryAttachments: (index: number, attachments: AttachmentRule[]) => void;
+  updateEntryField: (index: number, field: string, value: unknown) => void;
+};
+
+function recipientDataColumns({ locked, fieldDefinitions, individualAttachmentBasePaths, updateEntryAttachments, updateEntryField }: RecipientDataColumnContext): DataGridColumn<Record<string, unknown>>[] {
+  return [
+    { id: "number", header: "#", width: 70, sortable: true, sticky: "start", render: (_entry, index) => <span className="mono-small recipient-index-cell">{index + 1}</span>, value: (_entry, index) => index + 1 },
+    {
+      id: "recipient",
+      header: "Recipient",
+      width: 260,
+      resizable: true,
+      sortable: true,
+      filterable: true,
+      sticky: "start",
+      render: (entry) => (
+        <Link className="recipient-data-identity" to="../recipients" title="Open recipient address profile">
+          <span className="recipient-data-address">{firstRecipientEmail(entry) || "No To address"}</span>
+          {extraRecipientCount(entry) > 0 && <span className="recipient-extra-bubble">+{extraRecipientCount(entry)}</span>}
+        </Link>
+      ),
+      value: firstRecipientEmail
+    },
+    {
+      id: "attachments",
+      header: "Attachments",
+      width: 180,
+      filterable: true,
+      render: (entry, index) => {
+        const attachments = normalizeAttachmentRules(entry.attachments);
+        return (
+          <AttachmentRulesOverlay
+            title={`Attachments for recipient ${index + 1}`}
+            rules={attachments}
+            disabled={locked}
+            basePaths={individualAttachmentBasePaths}
+            onChange={(rules) => updateEntryAttachments(index, rules)}
+          />
+        );
+      },
+      value: (entry) => normalizeAttachmentRules(entry.attachments).map((rule) => `${rule.label ?? ""} ${rule.file_filter ?? ""}`).join(", ")
+    },
+    ...fieldDefinitions.map((field): DataGridColumn<Record<string, unknown>> => ({
+      id: `field-${field.name}`,
+      header: field.label || field.name,
+      width: 190,
+      resizable: true,
+      sortable: true,
+      filterable: true,
+      render: (entry, index) => {
+        const fields = asRecord(entry.fields);
+        return (
+          <FieldValueInput
+            className="recipient-field-input"
+            fieldType={field.type}
+            value={fields[field.name]}
+            disabled={locked || field.can_override === false}
+            placeholder={field.can_override === false ? "Uses global value" : undefined}
+            onChange={(value) => updateEntryField(index, field.name, value)}
+          />
+        );
+      },
+      value: (entry) => String(asRecord(entry.fields)[field.name] ?? "")
+    }))
+  ];
+}
+
 function firstRecipientEmail(entry: Record<string, unknown>): string {
   return (addressesFromValue(entry.to)[0] ?? addressesFromValue(entry.recipient)[0] ?? addressesFromValue(entry)[0])?.email ?? "";
 }

src/features/campaigns/SendDataPage.tsx

@@ -13,6 +13,8 @@ import Card from "../../components/Card";
 import MetricCard from "../../components/MetricCard";
 import StatusBadge from "../../components/StatusBadge";
 import ToggleSwitch from "../../components/ToggleSwitch";
+import DismissibleAlert from "../../components/DismissibleAlert";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 import { mockSendCampaign, sendCampaignNow } from "../../api/campaigns";
 import { getMockMailboxMessage, type MockMailboxMessage } from "../../api/mail";
 import { useCampaignWorkspaceData } from "./hooks/useCampaignWorkspaceData";
@@ -146,9 +148,9 @@ export default function SendDataPage({ settings, campaignId }: { settings: ApiSe
         </div>
       </div>
 
-      {error && <div className="alert danger">{error}</div>}
-      {sendMessage && <div className="alert info">{sendMessage}</div>}
-      {mockMessage && <div className="alert info">{mockMessage}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
+      {sendMessage && <DismissibleAlert tone="info" resetKey={sendMessage}>{sendMessage}</DismissibleAlert>}
+      {mockMessage && <DismissibleAlert tone="info" resetKey={mockMessage}>{mockMessage}</DismissibleAlert>}
       {locked && <LockedVersionNotice settings={settings} campaignId={campaignId} version={version} reload={reload} message="Send snapshot. Copy to edit." />}
 
       <LoadingFrame loading={loading || queuedOrSending} label={queuedOrSending ? "Refreshing send state…" : "Loading send data…"}>
@@ -181,89 +183,49 @@ export default function SendDataPage({ settings, campaignId }: { settings: ApiSe
 
         {mockResult && (
           <div className="mock-flow-panel">
-            <div className="app-table-wrap data-table-wrap">
-              <table className="app-table data-table compact-table">
-                <thead><tr><th>Step</th><th>Status</th><th>Summary</th></tr></thead>
-                <tbody>
-                  {mockSteps.map((step) => (
-                    <tr key={String(step.key)}>
-                      <td>{String(step.label ?? step.key)}</td>
-                      <td><StatusBadge status={String(step.status ?? "info")} /></td>
-                      <td>{stringifyPreview(asRecord(step.summary), 240)}</td>
-                    </tr>
-                  ))}
-                </tbody>
-              </table>
-            </div>
+            <DataGrid
+              id={`campaign-${campaignId}-mock-steps`}
+              rows={mockSteps}
+              columns={mockStepColumns()}
+              getRowKey={(step, index) => String(step.key ?? index)}
+              emptyText="No mock steps returned."
+              className="data-table-wrap data-table compact-table"
+            />
 
             <h3>Built messages</h3>
-            <div className="app-table-wrap data-table-wrap">
-              <table className="app-table data-table compact-table">
-                <thead><tr><th>#</th><th>Recipient</th><th>Subject</th><th>Validation</th><th>Attachments</th><th>Issues</th></tr></thead>
-                <tbody>
-                  {mockMessages.map((message) => {
-                    const to = asArray(message.to).map(asRecord);
-                    const issues = asArray(message.issues).map(asRecord);
-                    return (
-                      <tr key={String(message.entry_index ?? message.entry_id)}>
-                        <td>{String(message.entry_index ?? "—")}</td>
-                        <td>{to.map((item) => String(item.email ?? "")).filter(Boolean).join(", ") || "—"}</td>
-                        <td>{String(message.subject ?? "—")}</td>
-                        <td><StatusBadge status={String(message.validation_status ?? "unknown")} /></td>
-                        <td>{String(message.attachment_count ?? 0)}</td>
-                        <td>{issues.length === 0 ? "—" : issues.map((issue) => String(issue.message ?? issue.code ?? "issue")).join(" · ")}</td>
-                      </tr>
-                    );
-                  })}
-                  {mockMessages.length === 0 && <tr><td colSpan={6}>No messages were built.</td></tr>}
-                </tbody>
-              </table>
-            </div>
+            <DataGrid
+              id={`campaign-${campaignId}-mock-built-messages`}
+              rows={mockMessages}
+              columns={mockBuiltMessageColumns()}
+              getRowKey={(message, index) => String(message.entry_index ?? message.entry_id ?? index)}
+              emptyText="No messages were built."
+              className="data-table-wrap data-table compact-table"
+            />
 
             {mockRows.length > 0 && (
               <>
                 <h3>Mock send results</h3>
-                <div className="app-table-wrap data-table-wrap">
-                  <table className="app-table data-table compact-table">
-                    <thead><tr><th>#</th><th>Status</th><th>Recipient</th><th>SMTP</th><th>IMAP</th><th>Message</th></tr></thead>
-                    <tbody>
-                      {mockRows.map((row, index) => {
-                        const to = asArray(row.to).map(asRecord);
-                        return (
-                          <tr key={index}>
-                            <td>{String(row.entry_index ?? index + 1)}</td>
-                            <td><StatusBadge status={String(row.status ?? "info")} /></td>
-                            <td>{to.map((item) => String(item.email ?? "")).filter(Boolean).join(", ") || "—"}</td>
-                            <td>{String(row.smtp_message_id ?? row.status ?? "—")}</td>
-                            <td>{String(row.imap_message_id ?? row.imap_status ?? "—")}</td>
-                            <td>{String(row.message ?? "—")}</td>
-                          </tr>
-                        );
-                      })}
-                    </tbody>
-                  </table>
-                </div>
+                <DataGrid
+                  id={`campaign-${campaignId}-mock-send-results`}
+                  rows={mockRows}
+                  columns={mockSendResultColumns()}
+                  getRowKey={(_row, index) => `mock-send-${index}`}
+                  emptyText="No mock send results returned."
+                  className="data-table-wrap data-table compact-table"
+                />
               </>
             )}
 
             <h3>Mock mailbox</h3>
-            <div className="app-table-wrap data-table-wrap">
-              <table className="app-table data-table compact-table">
-                <thead><tr><th>Kind</th><th>Subject</th><th>Envelope / folder</th><th>Attachments</th><th>Actions</th></tr></thead>
-                <tbody>
-                  {mockMailboxMessages.map((message) => (
-                    <tr key={String(message.id)}>
-                      <td><span className="status-badge neutral">{String(message.kind ?? "mock")}</span></td>
-                      <td>{String(message.subject ?? "—")}</td>
-                      <td>{String(message.envelope_from ?? message.folder ?? "—")} → {asArray(message.envelope_recipients).join(", ") || String(message.folder ?? "—")}</td>
-                      <td>{String(message.attachment_count ?? 0)}</td>
-                      <td><Button onClick={() => void openMockMessage(String(message.id))}>Open</Button></td>
-                    </tr>
-                  ))}
-                  {mockMailboxMessages.length === 0 && <tr><td colSpan={5}>No mock messages captured in this run.</td></tr>}
-                </tbody>
-              </table>
-            </div>
+            <DataGrid
+              id={`campaign-${campaignId}-mock-mailbox`}
+              rows={mockMailboxMessages}
+              columns={mockMailboxColumns(openMockMessage)}
+              getRowKey={(message, index) => String(message.id ?? index)}
+              emptyText="No mock messages captured in this run."
+              className="data-table-wrap data-table compact-table"
+            />
+
 
 
           </div>
@@ -271,8 +233,8 @@ export default function SendDataPage({ settings, campaignId }: { settings: ApiSe
       </Card>
 
       <Card title="Send campaign" actions={<span className="muted small-note">Requires a validated, locked and built version. Sending makes it final.</span>}>
-        {!readyForDelivery && <div className="alert warning compact-alert">Validate and lock this version in Review before dry-run or sending.</div>}
-        {readyForDelivery && !hasBuild && <div className="alert warning compact-alert">Build the queue in Review before dry-run or sending.</div>}
+        {!readyForDelivery && <DismissibleAlert tone="warning" compact>Validate and lock this version in Review before dry-run or sending.</DismissibleAlert>}
+        {readyForDelivery && !hasBuild && <DismissibleAlert tone="warning" compact>Build the queue in Review before dry-run or sending.</DismissibleAlert>}
         <div className="button-row compact-actions">
           <Button onClick={() => void runSendNow(true)} disabled={!version || loading || sendBusy || !readyForDelivery || !hasBuild}>Dry run</Button>
           <Button variant="primary" onClick={() => setSendConfirmOpen(true)} disabled={!version || loading || sendBusy || !readyForDelivery || !hasBuild}>
@@ -292,22 +254,14 @@ export default function SendDataPage({ settings, campaignId }: { settings: ApiSe
               Attempted {String(sendResult.attempted_count ?? "—")}, sent {String(sendResult.sent_count ?? "—")}, failed {String(sendResult.failed_count ?? "—")}, skipped {String(sendResult.skipped_count ?? "—")}.
             </p>
             {resultRows.length > 0 && (
-              <div className="app-table-wrap data-table-wrap">
-                <table className="app-table data-table compact-table">
-                  <thead>
-                    <tr><th>Status</th><th>Job</th><th>Message</th></tr>
-                  </thead>
-                  <tbody>
-                    {resultRows.slice(0, 10).map((row, index) => (
-                      <tr key={index}>
-                        <td><StatusBadge status={String(row.status ?? "info")} /></td>
-                        <td>{String(row.job_id ?? row.version_id ?? "—")}</td>
-                        <td>{String(row.message ?? stringifyPreview(row, 180))}</td>
-                      </tr>
-                    ))}
-                  </tbody>
-                </table>
-              </div>
+              <DataGrid
+                id={`campaign-${campaignId}-send-results`}
+                rows={resultRows.slice(0, 10)}
+                columns={sendResultColumns()}
+                getRowKey={(_row, index) => `send-result-${index}`}
+                emptyText="No send results returned."
+                className="data-table-wrap data-table compact-table"
+              />
             )}
           </div>
         )}
@@ -372,6 +326,54 @@ export default function SendDataPage({ settings, campaignId }: { settings: ApiSe
 }
 
 
+function mockStepColumns(): DataGridColumn<Record<string, unknown>>[] {
+  return [
+    { id: "step", header: "Step", width: 190, sortable: true, filterable: true, sticky: "start", value: (step) => String(step.label ?? step.key ?? "") },
+    { id: "status", header: "Status", width: 140, sortable: true, filterable: true, render: (step) => <StatusBadge status={String(step.status ?? "info")} />, value: (step) => String(step.status ?? "info") },
+    { id: "summary", header: "Summary", width: "minmax(320px, 1fr)", filterable: true, render: (step) => stringifyPreview(asRecord(step.summary), 240), value: (step) => stringifyPreview(asRecord(step.summary), 240) }
+  ];
+}
+
+function mockBuiltMessageColumns(): DataGridColumn<Record<string, unknown>>[] {
+  return [
+    { id: "number", header: "#", width: 80, sortable: true, sticky: "start", value: (message) => String(message.entry_index ?? "—") },
+    { id: "recipient", header: "Recipient", width: 240, resizable: true, sortable: true, filterable: true, value: (message) => asArray(message.to).map(asRecord).map((item) => String(item.email ?? "")).filter(Boolean).join(", ") || "—" },
+    { id: "subject", header: "Subject", width: "minmax(260px, 1fr)", resizable: true, sortable: true, filterable: true, value: (message) => String(message.subject ?? "—") },
+    { id: "validation", header: "Validation", width: 150, sortable: true, filterable: true, render: (message) => <StatusBadge status={String(message.validation_status ?? "unknown")} />, value: (message) => String(message.validation_status ?? "unknown") },
+    { id: "attachments", header: "Attachments", width: 130, sortable: true, filterable: true, value: (message) => String(message.attachment_count ?? 0) },
+    { id: "issues", header: "Issues", width: 260, resizable: true, filterable: true, value: (message) => { const issues = asArray(message.issues).map(asRecord); return issues.length === 0 ? "—" : issues.map((issue) => String(issue.message ?? issue.code ?? "issue")).join(" · "); } }
+  ];
+}
+
+function mockSendResultColumns(): DataGridColumn<Record<string, unknown>>[] {
+  return [
+    { id: "number", header: "#", width: 80, sortable: true, sticky: "start", value: (row, index) => String(row.entry_index ?? index + 1) },
+    { id: "status", header: "Status", width: 140, sortable: true, filterable: true, render: (row) => <StatusBadge status={String(row.status ?? "info")} />, value: (row) => String(row.status ?? "info") },
+    { id: "recipient", header: "Recipient", width: 240, resizable: true, sortable: true, filterable: true, value: (row) => asArray(row.to).map(asRecord).map((item) => String(item.email ?? "")).filter(Boolean).join(", ") || "—" },
+    { id: "smtp", header: "SMTP", width: 190, sortable: true, filterable: true, value: (row) => String(row.smtp_message_id ?? row.status ?? "—") },
+    { id: "imap", header: "IMAP", width: 190, sortable: true, filterable: true, value: (row) => String(row.imap_message_id ?? row.imap_status ?? "—") },
+    { id: "message", header: "Message", width: "minmax(260px, 1fr)", filterable: true, value: (row) => String(row.message ?? "—") }
+  ];
+}
+
+function mockMailboxColumns(openMockMessage: (id: string) => Promise<void>): DataGridColumn<Record<string, unknown>>[] {
+  return [
+    { id: "kind", header: "Kind", width: 130, sortable: true, filterable: true, sticky: "start", render: (message) => <span className="status-badge neutral">{String(message.kind ?? "mock")}</span>, value: (message) => String(message.kind ?? "mock") },
+    { id: "subject", header: "Subject", width: "minmax(240px, 1fr)", sortable: true, filterable: true, value: (message) => String(message.subject ?? "—") },
+    { id: "envelope", header: "Envelope / folder", width: 300, resizable: true, filterable: true, value: (message) => `${String(message.envelope_from ?? message.folder ?? "—")} → ${asArray(message.envelope_recipients).join(", ") || String(message.folder ?? "—")}` },
+    { id: "attachments", header: "Attachments", width: 130, sortable: true, filterable: true, value: (message) => String(message.attachment_count ?? 0) },
+    { id: "actions", header: "Actions", width: 110, sticky: "end", render: (message) => <Button onClick={() => void openMockMessage(String(message.id))}>Open</Button> }
+  ];
+}
+
+function sendResultColumns(): DataGridColumn<Record<string, unknown>>[] {
+  return [
+    { id: "status", header: "Status", width: 140, sortable: true, filterable: true, sticky: "start", render: (row) => <StatusBadge status={String(row.status ?? "info")} />, value: (row) => String(row.status ?? "info") },
+    { id: "job", header: "Job", width: 180, sortable: true, filterable: true, value: (row) => String(row.job_id ?? row.version_id ?? "—") },
+    { id: "message", header: "Message", width: "minmax(320px, 1fr)", filterable: true, value: (row) => String(row.message ?? stringifyPreview(row, 180)) }
+  ];
+}
+
 function mockMessageMetaItems(message: MockMailboxMessage) {
   return [
     { label: "From", value: message.from_header || message.envelope_from || "—" },

src/features/campaigns/TemplateDataPage.tsx

@@ -5,6 +5,7 @@ import Card from "../../components/Card";
 import FormField from "../../components/FormField";
 import PageTitle from "../../components/PageTitle";
 import LoadingFrame from "../../components/LoadingFrame";
+import DismissibleAlert from "../../components/DismissibleAlert";
 import LockedVersionNotice from "./components/LockedVersionNotice";
 import VersionLine from "./components/VersionLine";
 import MessagePreviewOverlay, { type MessagePreviewAttachment } from "./components/MessagePreviewOverlay";
@@ -141,8 +142,8 @@ export default function TemplateDataPage({ settings, campaignId }: { settings: A
         </div>
       </div>
 
-      {error && <div className="alert danger">{error}</div>}
-      {localError && <div className="alert danger">{localError}</div>}
+      {error && <DismissibleAlert tone="danger" resetKey={error}>{error}</DismissibleAlert>}
+      {localError && <DismissibleAlert tone="danger" resetKey={localError}>{localError}</DismissibleAlert>}
       {locked && <LockedVersionNotice settings={settings} campaignId={campaignId} version={version} reload={reload} message="Create an editable copy before changing the template." />}
 
       <LoadingFrame loading={loading || !draft} label="Loading campaign draft…">
@@ -197,7 +198,7 @@ export default function TemplateDataPage({ settings, campaignId }: { settings: A
             <div className="template-side-stack">
               <Card title="Fields">
                 {invalidNamespacePlaceholders.length > 0 && (
-                  <div className="alert warning">Undefined placeholder namespace detected: {invalidNamespacePlaceholders.map((field) => field.namespace || field.raw).join(", ")}.</div>
+                  <DismissibleAlert tone="warning" resetKey={invalidNamespacePlaceholders.map((field) => field.namespace || field.raw).join(",")}>Undefined placeholder namespace detected: {invalidNamespacePlaceholders.map((field) => field.namespace || field.raw).join(", ")}.</DismissibleAlert>
                 )}
                 {usedPlaceholders.length === 0 && <p className="muted">No template placeholders detected yet.</p>}
                 <p className="muted small-note">Click a field to insert it at the current cursor position as a namespaced placeholder.</p>
@@ -263,7 +264,7 @@ export default function TemplateDataPage({ settings, campaignId }: { settings: A
             </header>
             <div className="modal-body">
               <p>The template uses <code>{`{{${undefinedDialog.raw}}}`}</code>, but it cannot be matched to a known field.</p>
-              {undefinedDialog.reason === "invalid-namespace" && <div className="alert warning">Use the namespace <code>global:</code> or <code>local:</code>.</div>}
+              {undefinedDialog.reason === "invalid-namespace" && <DismissibleAlert tone="warning">Use the namespace <code>global:</code> or <code>local:</code>.</DismissibleAlert>}
               {undefinedDialog.reason === "missing-field" && <p className="muted">You can add the name <strong>{undefinedDialog.name}</strong> as a campaign field, or remove this placeholder from subject, plain text and HTML.</p>}
             </div>
             <footer className="modal-footer">

src/features/campaigns/components/AttachmentRulesOverlay.tsx

@@ -1,6 +1,7 @@
 import { useMemo, useState } from "react";
 import { createPortal } from "react-dom";
 import Button from "../../../components/Button";
+import DataGrid, { type DataGridColumn } from "../../../components/table/DataGrid";
 import ToggleSwitch from "../../../components/ToggleSwitch";
 import { getBool, getText } from "../utils/draftEditor";
 import { createAttachmentRule, mockAttachmentFiles, summarizeAttachmentRules, type AttachmentBasePath, type AttachmentRule } from "../utils/attachments";
@@ -22,6 +23,7 @@ type AttachmentRulesTableProps = {
   disabled?: boolean;
   emptyText?: string;
   basePaths?: AttachmentBasePath[];
+  id?: string;
   showAddButton?: boolean;
   activeChooserRuleIndex?: number | null;
   onOpenFileChooser?: (ruleIndex: number) => void;
@@ -124,25 +126,44 @@ export default function AttachmentRulesOverlay({
 }
 
 export function AttachmentRulesTable({
+  showAddButton = true,
+  onChange,
+  ...tableProps
+}: AttachmentRulesTableProps) {
+  function addRule() {
+    onChange([...tableProps.rules, createAttachmentRule(tableProps.basePaths?.[0]?.path ?? "")]);
+  }
+
+  return (
+    <div className="attachment-rules-editor">
+      <div className="attachment-rules-main">
+        <AttachmentRulesDataGrid {...tableProps} onChange={onChange} />
+        {showAddButton && (
+          <div className="button-row compact-actions attachment-rules-footer-actions">
+            <Button onClick={addRule} disabled={tableProps.disabled}>Add file</Button>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+}
+
+export function AttachmentRulesDataGrid({
   rules,
   disabled = false,
   emptyText = "No attachment files or matching rules configured yet.",
   basePaths = [],
-  showAddButton = true,
+  id = "attachment-rules",
   activeChooserRuleIndex = null,
   onOpenFileChooser,
   onChange
-}: AttachmentRulesTableProps) {
+}: Omit<AttachmentRulesTableProps, "showAddButton">) {
   const [fileChooser, setFileChooser] = useState<FileChooserState | null>(null);
 
   function patchRule(index: number, patch: Partial<AttachmentRule>) {
     onChange(rules.map((rule, currentIndex) => currentIndex === index ? { ...rule, ...patch } : rule));
   }
 
-  function addRule() {
-    onChange([...rules, createAttachmentRule(basePaths[0]?.path ?? "")]);
-  }
-
   function removeRule(index: number) {
     setFileChooser(null);
     onChange(rules.filter((_, currentIndex) => currentIndex !== index));
@@ -169,75 +190,20 @@ export function AttachmentRulesTable({
     : "";
 
   return (
-    <div className="attachment-rules-editor">
-      <div className="attachment-rules-main">
-        {rules.length === 0 ? (
-          <p className="muted attachment-rules-empty">{emptyText}</p>
-        ) : (
-          <div className="app-table-wrap attachment-rules-table-wrap">
-            <table className="app-table attachment-rules-table">
-              <thead>
-                <tr>
-                  <th>Label</th>
-                  <th>Base path</th>
-                  <th>File / pattern</th>
-                  <th>Required</th>
-                  <th>Subdirs</th>
-                  <th></th>
-                </tr>
-              </thead>
-              <tbody>
-                {rules.map((rule, index) => {
-                  const currentBasePath = getText(rule, "base_dir", basePaths[0]?.path ?? "");
-                  const isChoosingFile = (activeChooserRuleIndex ?? fileChooser?.ruleIndex) === index;
-                  return (
-                    <tr key={String(rule.id ?? index)} className={isChoosingFile ? "is-choosing-file" : undefined}>
-                      <td><input value={getText(rule, "label")} disabled={disabled} placeholder="Attachment label" onChange={(event) => patchRule(index, { label: event.target.value })} /></td>
-                      <td>
-                        {basePaths.length > 0 ? (
-                          <select value={currentBasePath} disabled={disabled} onChange={(event) => patchRule(index, { base_dir: event.target.value })}>
-                            {basePaths.map((basePath) => <option key={basePath.id} value={basePath.path}>{basePath.name || basePath.path}</option>)}
-                          </select>
-                        ) : (
-                          <input value={currentBasePath} disabled={disabled} readOnly placeholder="optional/folder" />
-                        )}
-                      </td>
-                      <td>
-                        <div className="field-with-action">
-                          <input
-                            className="chooser-display-input"
-                            value={getText(rule, "file_filter")}
-                            disabled={disabled}
-                            readOnly
-                            tabIndex={-1}
-                            placeholder="file.pdf or {{local:id}}.pdf"
-                            onClick={() => !disabled && openFileChooser(index)}
-                            onKeyDown={(event) => {
-                              if (!disabled && (event.key === "Enter" || event.key === " ")) {
-                                event.preventDefault();
-                                openFileChooser(index);
-                              }
-                            }}
-                          />
-                          <Button onClick={() => openFileChooser(index)} disabled={disabled}>Choose</Button>
-                        </div>
-                      </td>
-                      <td><ToggleSwitch label="Required" checked={getBool(rule, "required", true)} disabled={disabled} onChange={(checked) => patchRule(index, { required: checked })} /></td>
-                      <td><ToggleSwitch label="Subdirs" checked={getBool(rule, "include_subdirs")} disabled={disabled} onChange={(checked) => patchRule(index, { include_subdirs: checked })} /></td>
-                      <td className="table-action-cell"><Button variant="danger" onClick={() => removeRule(index)} disabled={disabled}>Remove</Button></td>
-                    </tr>
-                  );
-                })}
-              </tbody>
-            </table>
-          </div>
-        )}
-        {showAddButton && (
-          <div className="button-row compact-actions attachment-rules-footer-actions">
-            <Button onClick={addRule} disabled={disabled}>Add file</Button>
-          </div>
-        )}
-      </div>
+    <>
+      {rules.length === 0 ? (
+        <p className="muted attachment-rules-empty">{emptyText}</p>
+      ) : (
+        <DataGrid
+          id={id}
+          rows={rules}
+          columns={attachmentRuleColumns({ disabled, basePaths, activeChooserRuleIndex: activeChooserRuleIndex ?? fileChooser?.ruleIndex ?? null, patchRule, openFileChooser, removeRule })}
+          getRowKey={(rule, index) => String(rule.id ?? index)}
+          emptyText={emptyText}
+          className="attachment-rules-table-wrap attachment-rules-table"
+          rowClassName={(_rule, index) => (activeChooserRuleIndex ?? fileChooser?.ruleIndex) === index ? "is-choosing-file" : undefined}
+        />
+      )}
       {fileChooser && (
         <MockFileChooserOverlay
           basePath={activeBasePath}
@@ -245,10 +211,75 @@ export function AttachmentRulesTable({
           onClose={() => setFileChooser(null)}
         />
       )}
-    </div>
+    </>
   );
 }
 
+type AttachmentRuleColumnContext = {
+  disabled: boolean;
+  basePaths: AttachmentBasePath[];
+  activeChooserRuleIndex: number | null;
+  patchRule: (index: number, patch: Partial<AttachmentRule>) => void;
+  openFileChooser: (ruleIndex: number) => void;
+  removeRule: (index: number) => void;
+};
+
+function attachmentRuleColumns({ disabled, basePaths, activeChooserRuleIndex: _activeChooserRuleIndex, patchRule, openFileChooser, removeRule }: AttachmentRuleColumnContext): DataGridColumn<AttachmentRule>[] {
+  return [
+    { id: "label", header: "Label", width: 190, resizable: true, sortable: true, filterable: true, sticky: "start", render: (rule, index) => <input value={getText(rule, "label")} disabled={disabled} placeholder="Attachment label" onChange={(event) => patchRule(index, { label: event.target.value })} />, value: (rule) => getText(rule, "label") },
+    {
+      id: "base_path",
+      header: "Base path",
+      width: 250,
+      sortable: true,
+      filterable: true,
+      render: (rule, index) => {
+        const currentBasePath = getText(rule, "base_dir", basePaths[0]?.path ?? "");
+        return basePaths.length > 0 ? (
+          <select value={currentBasePath} disabled={disabled} onChange={(event) => patchRule(index, { base_dir: event.target.value })}>
+            {basePaths.map((basePath) => <option key={basePath.id} value={basePath.path}>{basePath.name || basePath.path}</option>)}
+          </select>
+        ) : (
+          <input value={currentBasePath} disabled={disabled} readOnly placeholder="optional/folder" />
+        );
+      },
+      value: (rule) => getText(rule, "base_dir", basePaths[0]?.path ?? "")
+    },
+    {
+      id: "file_filter",
+      header: "File / pattern",
+      width: "minmax(260px, 1fr)",
+      resizable: true,
+      sortable: true,
+      filterable: true,
+      render: (rule, index) => (
+        <div className="field-with-action">
+          <input
+            className="chooser-display-input"
+            value={getText(rule, "file_filter")}
+            disabled={disabled}
+            readOnly
+            tabIndex={-1}
+            placeholder="file.pdf or {{local:id}}.pdf"
+            onClick={() => !disabled && openFileChooser(index)}
+            onKeyDown={(event) => {
+              if (!disabled && (event.key === "Enter" || event.key === " ")) {
+                event.preventDefault();
+                openFileChooser(index);
+              }
+            }}
+          />
+          <Button onClick={() => openFileChooser(index)} disabled={disabled}>Choose</Button>
+        </div>
+      ),
+      value: (rule) => getText(rule, "file_filter")
+    },
+    { id: "required", header: "Required", width: 175, sortable: true, filterable: true, render: (rule, index) => <ToggleSwitch label="Required" checked={getBool(rule, "required", true)} disabled={disabled} onChange={(checked) => patchRule(index, { required: checked })} />, value: (rule) => getBool(rule, "required", true) ? "required" : "optional" },
+    { id: "subdirs", header: "Subdirs", width: 165, sortable: true, filterable: true, render: (rule, index) => <ToggleSwitch label="Subdirs" checked={getBool(rule, "include_subdirs")} disabled={disabled} onChange={(checked) => patchRule(index, { include_subdirs: checked })} />, value: (rule) => getBool(rule, "include_subdirs") ? "subdirs" : "current" },
+    { id: "actions", header: "", width: 120, sticky: "end", render: (_rule, index) => <Button variant="danger" onClick={() => removeRule(index)} disabled={disabled}>Remove</Button> }
+  ];
+}
+
 function MockFileChooserOverlay({ basePath, onSelect, onClose }: { basePath: string; onSelect: (fileFilter: string) => void; onClose: () => void }) {
   return createPortal(
     <div className="overlay-backdrop" role="dialog" aria-modal="true" aria-labelledby="mock-file-chooser-title">

src/features/campaigns/components/ReviewWorkflowCards.tsx

@@ -4,7 +4,9 @@ import type { CampaignSummary, CampaignVersionDetail } from "../../../api/campai
 import { buildVersion, validateVersion } from "../../../api/campaigns";
 import Button from "../../../components/Button";
 import Card from "../../../components/Card";
+import DismissibleAlert from "../../../components/DismissibleAlert";
 import StatusBadge from "../../../components/StatusBadge";
+import DataGrid, { type DataGridColumn } from "../../../components/table/DataGrid";
 import {
   asArray,
   asRecord,
@@ -105,7 +107,7 @@ export default function ReviewWorkflowCards({
 
   return (
     <>
-      {actionMessage && <div className="alert info">{actionMessage}</div>}
+      {actionMessage && <DismissibleAlert tone="info" resetKey={actionMessage}>{actionMessage}</DismissibleAlert>}
 
       <Card
         title="Review actions"
@@ -262,46 +264,29 @@ export default function ReviewWorkflowCards({
           </p>
         )}
         {issues.length > 0 && (
-          <div className="app-table-wrap data-table-wrap">
-            <table className="app-table data-table">
-              <thead>
-                <tr>
-                  <th>Severity</th>
-                  <th>Location</th>
-                  <th>Code</th>
-                  <th>Message</th>
-                </tr>
-              </thead>
-              <tbody>
-                {issues.map((issue, index) => (
-                  <tr key={String(issue.issueKey ?? index)}>
-                    <td>
-                      <StatusBadge status={String(issue.severity || "info")} />
-                    </td>
-                    <td>
-                      {String(
-                        issue.path ||
-                          issue.source ||
-                          issue.section ||
-                          issue.field ||
-                          "—",
-                      )}
-                    </td>
-                    <td>{String(issue.code || "—")}</td>
-                    <td>
-                      {String(issue.message || stringifyPreview(issue, 220))}
-                    </td>
-                  </tr>
-                ))}
-              </tbody>
-            </table>
-          </div>
+          <DataGrid
+            id={`campaign-${version?.campaign_id ?? "unknown"}-validation-issues`}
+            rows={issues}
+            columns={validationIssueColumns()}
+            getRowKey={(issue, index) => String(issue.issueKey ?? index)}
+            emptyText="No validation issues are stored for this version."
+            className="data-table-wrap data-table"
+          />
         )}
       </Card>
     </>
   );
 }
 
+function validationIssueColumns(): DataGridColumn<Record<string, unknown>>[] {
+  return [
+    { id: "severity", header: "Severity", width: 140, sortable: true, filterable: true, sticky: "start", render: (issue) => <StatusBadge status={String(issue.severity || "info")} />, value: (issue) => String(issue.severity || "info") },
+    { id: "location", header: "Location", width: 220, resizable: true, sortable: true, filterable: true, render: (issue) => String(issue.path || issue.source || issue.section || issue.field || "—"), value: (issue) => String(issue.path || issue.source || issue.section || issue.field || "") },
+    { id: "code", header: "Code", width: 180, resizable: true, sortable: true, filterable: true, render: (issue) => String(issue.code || "—"), value: (issue) => String(issue.code || "") },
+    { id: "message", header: "Message", width: "minmax(320px, 1fr)", resizable: true, sortable: true, filterable: true, render: (issue) => String(issue.message || stringifyPreview(issue, 220)), value: (issue) => String(issue.message || stringifyPreview(issue, 220)) }
+  ];
+}
+
 function SummaryTile({
   label,
   value,

src/features/campaigns/utils/campaignView.ts

@@ -58,7 +58,16 @@ export function isUserLockedVersion(version: CampaignVersionDetail | CampaignVer
 
 export function isFinalLockedVersion(version: CampaignVersionDetail | CampaignVersionListItem | null): boolean {
   if (!version) return false;
-  return ["queued", "sending", "completed", "archived", "cancelled"].includes(version.workflow_state ?? "");
+  return [
+    "queued",
+    "sending",
+    "sent",
+    "completed",
+    "failed_partial",
+    "partially_sent",
+    "archived",
+    "cancelled"
+  ].includes((version.workflow_state ?? "").toLowerCase());
 }
 
 export function isVersionReadyForDelivery(version: CampaignVersionDetail | CampaignVersionListItem | null): boolean {

src/features/campaigns/wizard/CreateWizard.tsx

@@ -4,6 +4,7 @@ import type { ApiSettings, WizardStep } from "../../../types";
 import Stepper from "../../../components/Stepper";
 import Card from "../../../components/Card";
 import Button from "../../../components/Button";
+import DismissibleAlert from "../../../components/DismissibleAlert";
 import PageTitle from "../../../components/PageTitle";
 import LockedVersionNotice from "../components/LockedVersionNotice";
 import { validatePartial } from "../../../api/campaigns";
@@ -116,8 +117,8 @@ export default function CreateWizard({ settings, campaignId }: { settings: ApiSe
             </div>
             <div className="save-state">{saveState}</div>
           </div>
-          {localError && <div className="alert danger">{localError}</div>}
-          {validationMessage && <div className="alert info">{validationMessage}</div>}
+          {localError && <DismissibleAlert tone="danger" resetKey={localError}>{localError}</DismissibleAlert>}
+          {validationMessage && <DismissibleAlert tone="info" resetKey={validationMessage}>{validationMessage}</DismissibleAlert>}
           <Card>
             {draft && activeStep === "basics" && <BasicsStep draft={draft} patch={patch} />}
             {draft && activeStep === "sender" && <SenderStep draft={draft} patch={patch} />}

src/features/files/FilesPage.tsx

@@ -4,6 +4,7 @@ import Card from "../../components/Card";
 import PageTitle from "../../components/PageTitle";
 import StatusBadge from "../../components/StatusBadge";
 import ModuleSubnav, { type ModuleSubnavGroup } from "../../layout/ModuleSubnav";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 
 type StorageRecord = {
   id: string;
@@ -82,6 +83,30 @@ const demoFiles = [
   { name: "global_notice.pdf", path: "/shared/global_notice.pdf", size: "81 KB", updatedAt: "2026-06-06 09:44", status: "ready" }
 ];
 
+function storageColumns(openStorage: (storageId: string) => void): DataGridColumn<StorageRecord>[] {
+  return [
+    { id: "storage", header: "Storage", width: "minmax(240px, 1.4fr)", sortable: true, filterable: true, sticky: "start", render: (storage) => <div className="module-title-cell"><strong>{storage.name}</strong><span>{storage.description}</span></div>, value: (storage) => `${storage.name} ${storage.description}` },
+    { id: "type", header: "Type", width: 220, sortable: true, filterable: true, value: (storage) => storage.type },
+    { id: "scope", header: "Scope", width: 160, sortable: true, filterable: true, value: (storage) => storage.scope },
+    { id: "files", header: "Files", width: 110, sortable: true, filterable: true, value: (storage) => storage.files },
+    { id: "used", header: "Used", width: 120, sortable: true, filterable: true, value: (storage) => storage.used },
+    { id: "retention", header: "Retention", width: 190, sortable: true, filterable: true, value: (storage) => storage.retention },
+    { id: "updated", header: "Updated", width: 170, sortable: true, filterable: true, render: (storage) => <span className="muted small-text">{storage.updatedAt}</span>, value: (storage) => storage.updatedAt },
+    { id: "actions", header: "Actions", width: 110, sticky: "end", render: (storage) => <Button onClick={() => openStorage(storage.id)}>Open</Button> }
+  ];
+}
+
+function fileColumns(): DataGridColumn<(typeof demoFiles)[number]>[] {
+  return [
+    { id: "name", header: "Name", width: "minmax(180px, 1fr)", sortable: true, filterable: true, sticky: "start", value: (file) => file.name },
+    { id: "path", header: "Path", width: 260, sortable: true, filterable: true, resizable: true, render: (file) => <code>{file.path}</code>, value: (file) => file.path },
+    { id: "size", header: "Size", width: 100, sortable: true, filterable: true, value: (file) => file.size },
+    { id: "updated", header: "Updated", width: 170, sortable: true, filterable: true, render: (file) => <span className="muted small-text">{file.updatedAt}</span>, value: (file) => file.updatedAt },
+    { id: "status", header: "Status", width: 130, sortable: true, filterable: true, render: (file) => <StatusBadge status={file.status} />, value: (file) => file.status },
+    { id: "actions", header: "Actions", width: 120, sticky: "end", render: () => <Button disabled>Download</Button> }
+  ];
+}
+
 export default function FilesPage() {
   const [selectedStorageId, setSelectedStorageId] = useState<string | null>(null);
   const [active, setActive] = useState<StorageSection>("browse");
@@ -146,41 +171,14 @@ export default function FilesPage() {
           </div>
         }
       >
-        <div className="app-table-wrap compact-table-wrap module-table-wrap">
-          <table className="app-table module-table module-entry-table">
-            <thead>
-              <tr>
-                <th>Storage</th>
-                <th>Type</th>
-                <th>Scope</th>
-                <th>Files</th>
-                <th>Used</th>
-                <th>Retention</th>
-                <th>Updated</th>
-                <th aria-label="Actions" />
-              </tr>
-            </thead>
-            <tbody>
-              {storages.map((storage) => (
-                <tr key={storage.id}>
-                  <td>
-                    <div className="module-title-cell">
-                      <strong>{storage.name}</strong>
-                      <span>{storage.description}</span>
-                    </div>
-                  </td>
-                  <td>{storage.type}</td>
-                  <td>{storage.scope}</td>
-                  <td>{storage.files}</td>
-                  <td>{storage.used}</td>
-                  <td>{storage.retention}</td>
-                  <td><span className="muted small-text">{storage.updatedAt}</span></td>
-                  <td className="table-action-cell"><Button onClick={() => openStorage(storage.id)}>Open</Button></td>
-                </tr>
-              ))}
-            </tbody>
-          </table>
-        </div>
+        <DataGrid
+          id="file-storages"
+          rows={storages}
+          columns={storageColumns(openStorage)}
+          getRowKey={(storage) => storage.id}
+          emptyText="No file storages configured."
+          className="compact-table-wrap module-table-wrap module-entry-table"
+        />
       </Card>
     </div>
   );
@@ -192,24 +190,14 @@ function StorageBrowse({ storage }: { storage: StorageRecord }) {
       title="Browse content"
       actions={<div className="button-row compact-actions"><Button disabled>Upload</Button><Button disabled>Download selected</Button><Button variant="danger" disabled>Delete selected</Button></div>}
     >
-      <div className="app-table-wrap compact-table-wrap module-table-wrap">
-        <table className="app-table module-table">
-          <thead><tr><th>Name</th><th>Path</th><th>Size</th><th>Updated</th><th>Status</th><th></th></tr></thead>
-          <tbody>
-            {(storage.id === "campaign-files" ? demoFiles : []).map((file) => (
-              <tr key={file.path}>
-                <td>{file.name}</td>
-                <td><code>{file.path}</code></td>
-                <td>{file.size}</td>
-                <td><span className="muted small-text">{file.updatedAt}</span></td>
-                <td><StatusBadge status={file.status} /></td>
-                <td className="table-action-cell"><Button disabled>Download</Button></td>
-              </tr>
-            ))}
-            {storage.id !== "campaign-files" && <tr><td colSpan={6} className="muted">Files will appear here when this storage is connected.</td></tr>}
-          </tbody>
-        </table>
-      </div>
+      <DataGrid
+        id={`files-${storage.id}`}
+        rows={storage.id === "campaign-files" ? demoFiles : []}
+        columns={fileColumns()}
+        getRowKey={(file) => file.path}
+        emptyText="Files will appear here when this storage is connected."
+        className="compact-table-wrap module-table-wrap module-table"
+      />
     </Card>
   );
 }

src/features/templates/TemplatesPage.tsx

@@ -5,6 +5,7 @@ import PageTitle from "../../components/PageTitle";
 import FieldLabel from "../../components/help/FieldLabel";
 import StatusBadge from "../../components/StatusBadge";
 import ModuleSubnav, { type ModuleSubnavGroup } from "../../layout/ModuleSubnav";
+import DataGrid, { type DataGridColumn } from "../../components/table/DataGrid";
 
 type TemplateRecord = {
   id: string;
@@ -81,6 +82,26 @@ const templateSubnav = (onBack: () => void): ModuleSubnavGroup<TemplateDetailSec
   }
 ];
 
+function templateLibraryColumns(openTemplate: (templateId: string) => void): DataGridColumn<TemplateRecord>[] {
+  return [
+    { id: "template", header: "Template", width: "minmax(240px, 1.4fr)", sortable: true, filterable: true, sticky: "start", render: (template) => <div className="module-title-cell"><strong>{template.name}</strong><span>{template.description}</span></div>, value: (template) => `${template.name} ${template.description}` },
+    { id: "type", header: "Type", width: 150, sortable: true, filterable: true, value: (template) => template.type },
+    { id: "fields", header: "Fields", width: 240, filterable: true, render: (template) => <div className="chip-row compact-chip-row">{template.fields.slice(0, 3).map((field) => <span key={field} className="field-chip">{field}</span>)}</div>, value: (template) => template.fields.join(", ") },
+    { id: "updated", header: "Updated", width: 170, sortable: true, filterable: true, render: (template) => <span className="muted small-text">{template.updatedAt}</span>, value: (template) => template.updatedAt },
+    { id: "status", header: "Status", width: 130, sortable: true, filterable: true, render: (template) => <StatusBadge status={template.status} />, value: (template) => template.status },
+    { id: "actions", header: "Actions", width: 110, sticky: "end", render: (template) => <Button onClick={() => openTemplate(template.id)}>Open</Button> }
+  ];
+}
+
+function templateFieldColumns(): DataGridColumn<{ id: string; field: string; source: string; required: string }>[] {
+  return [
+    { id: "field", header: "Field", width: "minmax(180px, 1fr)", sortable: true, filterable: true, sticky: "start", render: (row) => <code>{row.field}</code>, value: (row) => row.field },
+    { id: "source", header: "Source", width: 190, sortable: true, filterable: true, value: (row) => row.source },
+    { id: "required", header: "Required", width: 120, sortable: true, filterable: true, value: (row) => row.required },
+    { id: "actions", header: "Actions", width: 130, sticky: "end", render: () => <Button disabled>Configure</Button> }
+  ];
+}
+
 export default function TemplatesPage() {
   const [selectedId, setSelectedId] = useState<string | null>(null);
   const [active, setActive] = useState<TemplateDetailSection>("overview");
@@ -145,41 +166,14 @@ export default function TemplatesPage() {
         }
         actions={<Button disabled>Refresh</Button>}
       >
-        <div className="app-table-wrap compact-table-wrap module-table-wrap">
-          <table className="app-table module-table module-entry-table">
-            <thead>
-              <tr>
-                <th>Template</th>
-                <th>Type</th>
-                <th>Fields</th>
-                <th>Updated</th>
-                <th>Status</th>
-                <th aria-label="Actions" />
-              </tr>
-            </thead>
-            <tbody>
-              {templateRecords.map((template) => (
-                <tr key={template.id}>
-                  <td>
-                    <div className="module-title-cell">
-                      <strong>{template.name}</strong>
-                      <span>{template.description}</span>
-                    </div>
-                  </td>
-                  <td>{template.type}</td>
-                  <td>
-                    <div className="chip-row compact-chip-row">
-                      {template.fields.slice(0, 3).map((field) => <span key={field} className="field-chip">{field}</span>)}
-                    </div>
-                  </td>
-                  <td><span className="muted small-text">{template.updatedAt}</span></td>
-                  <td><StatusBadge status={template.status} /></td>
-                  <td className="table-action-cell"><Button onClick={() => openTemplate(template.id)}>Open</Button></td>
-                </tr>
-              ))}
-            </tbody>
-          </table>
-        </div>
+        <DataGrid
+          id="template-library"
+          rows={templateRecords}
+          columns={templateLibraryColumns(openTemplate)}
+          getRowKey={(template) => template.id}
+          emptyText="No templates found."
+          className="compact-table-wrap module-table-wrap module-entry-table"
+        />
       </Card>
     </div>
   );
@@ -222,16 +216,14 @@ function TemplateContent({ template }: { template: TemplateRecord }) {
 function TemplateFields({ template }: { template: TemplateRecord }) {
   return (
     <Card title="Template fields" actions={<Button disabled>Add field hint</Button>}>
-      <div className="app-table-wrap compact-table-wrap module-table-wrap">
-        <table className="app-table module-table">
-          <thead><tr><th>Field</th><th>Source</th><th>Required</th><th></th></tr></thead>
-          <tbody>
-            {template.fields.map((field) => (
-              <tr key={field}><td><code>{field}</code></td><td>Detected placeholder</td><td>Yes</td><td><Button disabled>Configure</Button></td></tr>
-            ))}
-          </tbody>
-        </table>
-      </div>
+      <DataGrid
+        id={`template-${template.id}-fields`}
+        rows={template.fields.map((field) => ({ id: field, field, source: "Detected placeholder", required: "Yes" }))}
+        columns={templateFieldColumns()}
+        getRowKey={(field) => field.id}
+        emptyText="No fields detected."
+        className="compact-table-wrap module-table-wrap module-table"
+      />
     </Card>
   );
 }

src/styles/components.css

@@ -607,3 +607,335 @@
     transition: none;
   }
 }
+
+/* Reusable dismissible page alerts */
+.alert-dismissible {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 12px;
+  position: sticky;
+  top: 10px;
+  z-index: 30;
+  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
+}
+
+.alert-dismissible .alert-message {
+  min-width: 0;
+  flex: 1 1 auto;
+}
+
+.alert-dismiss {
+  border: 0;
+  background: transparent;
+  color: currentColor;
+  opacity: 0.78;
+  cursor: pointer;
+  line-height: 1;
+  padding: 2px;
+  border-radius: 999px;
+  flex: 0 0 auto;
+}
+
+.alert-dismiss:hover,
+.alert-dismiss:focus-visible {
+  opacity: 1;
+  background: rgba(255, 255, 255, 0.45);
+}
+
+/* Reusable data grid */
+.data-grid-shell {
+  width: 100%;
+  min-width: 0;
+  overflow: auto;
+  border: 1px solid var(--border);
+  border-radius: var(--radius-sm);
+  background: var(--surface);
+  scrollbar-gutter: stable;
+}
+
+.card-body > .data-grid-shell:only-child {
+  margin: -22px -24px;
+  width: calc(100% + 48px);
+  border-left: 0;
+  border-right: 0;
+  border-radius: 0;
+}
+
+.data-grid-container {
+  height: 100%;
+}
+
+.data-grid {
+  display: grid;
+  align-items: stretch;
+}
+
+.data-grid-has-flex {
+  width: 100%;
+  min-width: max-content;
+}
+
+.data-grid-fixed-only {
+  width: 100%;
+  min-width: max-content;
+}
+
+.data-grid-container .data-grid {
+  min-height: 100%;
+}
+
+.data-grid-cell {
+  min-width: 0;
+  padding: 11px 12px;
+  border-right: 1px solid rgba(189, 184, 176, 0.32);
+  border-bottom: 1px solid var(--border-soft, var(--line));
+  background: var(--surface);
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+
+.data-grid-cell:last-child {
+  border-right: 0;
+}
+
+.data-grid-header-cell {
+  position: sticky;
+  top: 0;
+  z-index: 4;
+  background: var(--bar);
+  border-bottom: 1px solid var(--line-dark);
+  color: #625f5a;
+  font-size: 12px;
+  font-weight: 800;
+  letter-spacing: .04em;
+  text-transform: uppercase;
+  box-shadow: none;
+}
+
+.data-grid-body-cell {
+  color: var(--text);
+}
+
+.data-grid-body-cell.data-grid-row-odd {
+  background: #fbfaf8;
+}
+
+.data-grid-body-cell.data-grid-row-even {
+  background: var(--surface);
+}
+
+.data-grid-body-cell.align-center,
+.data-grid-header-cell.align-center {
+  justify-content: center;
+  text-align: center;
+}
+
+.data-grid-body-cell.align-right,
+.data-grid-header-cell.align-right {
+  justify-content: flex-end;
+  text-align: right;
+}
+
+.data-grid-header-button {
+  all: unset;
+  display: inline-flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 7px;
+  flex: 1 1 auto;
+  min-width: 0;
+  color: inherit;
+  cursor: default;
+}
+
+.data-grid-header-button span {
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.data-grid-header-cell.is-sortable .data-grid-header-button {
+  cursor: pointer;
+}
+
+.data-grid-header-cell.is-sorted .data-grid-header-button {
+  color: var(--text-strong);
+}
+
+.data-grid-resize-handle,
+.data-grid-filter-trigger {
+  border: 0;
+  background: transparent;
+  color: rgba(98, 95, 90, .68);
+  padding: 0;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  flex: 0 0 auto;
+  border-radius: 999px;
+}
+
+.data-grid-resize-handle {
+  cursor: col-resize;
+  width: 16px;
+  align-self: stretch;
+}
+
+.data-grid-filter-trigger {
+  width: 24px;
+  height: 24px;
+  cursor: pointer;
+}
+
+.data-grid-filter-trigger:hover,
+.data-grid-filter-trigger:focus-visible,
+.data-grid-filter-trigger.is-open {
+  color: var(--text-strong);
+  background: rgba(255, 255, 255, .45);
+  outline: none;
+}
+
+.data-grid-filter-trigger.has-filter {
+  color: var(--text-strong);
+  background: rgba(255, 255, 255, .62);
+  box-shadow: inset 0 0 0 1px rgba(98, 95, 90, .24);
+}
+
+.data-grid-filter-popover {
+  position: fixed;
+  z-index: 12000;
+  border: 1px solid var(--line-dark);
+  border-radius: var(--radius-sm);
+  background: var(--surface);
+  box-shadow: var(--shadow-menu);
+  padding: 12px;
+  color: var(--text);
+}
+
+.data-grid-filter-popover-header {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  justify-content: space-between;
+  margin-bottom: 10px;
+  color: var(--text-strong);
+}
+
+.data-grid-filter-popover-header strong {
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.data-grid-filter-popover-header button,
+.data-grid-filter-input-wrap button {
+  border: 0;
+  background: transparent;
+  color: var(--muted);
+  cursor: pointer;
+  border-radius: 999px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.data-grid-filter-popover-header button:hover,
+.data-grid-filter-input-wrap button:hover,
+.data-grid-filter-popover-header button:focus-visible,
+.data-grid-filter-input-wrap button:focus-visible {
+  color: var(--text-strong);
+  background: var(--panel-soft);
+  outline: none;
+}
+
+.data-grid-filter-stack {
+  display: grid;
+  gap: 10px;
+}
+
+.data-grid-filter-field {
+  display: grid;
+  gap: 5px;
+  font-size: 12px;
+  color: var(--muted);
+  font-weight: 700;
+}
+
+.data-grid-filter-field input,
+.data-grid-filter-field select {
+  width: 100%;
+  border: 1px solid var(--line);
+  border-radius: var(--radius-sm);
+  background: #fff;
+  color: var(--text);
+  font: inherit;
+  font-weight: 500;
+  padding: 8px 10px;
+}
+
+.data-grid-filter-field input:focus,
+.data-grid-filter-field select:focus {
+  outline: none;
+  box-shadow: var(--focus-ring);
+  border-color: var(--blue);
+}
+
+.data-grid-filter-input-wrap {
+  position: relative;
+}
+
+.data-grid-filter-input-wrap input {
+  padding-right: 32px;
+}
+
+.data-grid-filter-input-wrap button {
+  position: absolute;
+  right: 6px;
+  top: 50%;
+  transform: translateY(-50%);
+  width: 22px;
+  height: 22px;
+}
+
+.data-grid-empty {
+  grid-column: 1 / -1;
+  padding: 20px;
+  color: var(--muted);
+  background: var(--surface);
+  border-bottom: 1px solid var(--line);
+}
+
+.data-grid-cell.is-sticky-start,
+.data-grid-cell.is-sticky-end {
+  position: sticky;
+  z-index: 2;
+  background-clip: padding-box;
+}
+
+.data-grid-cell.is-sticky-start {
+  border-right: 1px solid var(--line-dark);
+  box-shadow: 8px 0 14px -14px rgba(45, 43, 40, .6);
+}
+
+.data-grid-cell.is-sticky-end {
+  border-left: 1px solid var(--line-dark);
+  box-shadow: -8px 0 14px -14px rgba(45, 43, 40, .6);
+}
+
+.data-grid-header-cell.is-sticky-start,
+.data-grid-header-cell.is-sticky-end {
+  z-index: 5;
+  border-bottom: 1px solid var(--line-dark);
+  background: var(--bar);
+}
+
+.data-grid-body-cell.current-version-row,
+.data-grid-body-cell.current-recipient-row,
+.data-grid-body-cell.current-row {
+  font-weight: 700;
+}
+