v3.79.0

changelog.md

@@ -1,5 +1,27 @@
 # Changelog
 
+## 2026-04-16 - 3.79.0 - feat(dees-progressbar)
+add status panels, terminal output, and legacy progress input support
+
+- Extend dees-progressbar with label, statusText, terminalLines, statusRows, indeterminate, and showPercentage properties.
+- Support legacy value input and normalized progress values while clamping and formatting percentages consistently.
+- Add fixed-height status and terminal-style output with spinner animation and auto-scroll behavior for live activity updates.
+- Refresh the progressbar demo and readme examples to showcase determinate, indeterminate, terminal, and compatibility usage patterns.
+
+## 2026-04-14 - 3.78.3 - fix(dees-table)
+stabilize live updates by reusing row DOM and avoiding redundant layout recalculations
+
+- reuse keyed table rows across live-sorted updates so existing row elements persist while cells reorder
+- limit flash animation restarts to changed cells by tracking per-cell flash tokens
+- avoid repeated column width measurements unless table layout inputs actually change
+- replace async header and footer action rendering with direct mapped output to prevent comment node growth during updates
+- add Chromium live update tests covering width measurement stability, comment growth, and row DOM reuse
+
+## 2026-04-12 - 3.78.2 - fix(deps)
+bump @design.estate/dees-wcctools to ^3.9.0
+
+- Updates the @design.estate/dees-wcctools dependency from ^3.8.4 to ^3.9.0 in package.json.
+
 ## 2026-04-12 - 3.78.1 - fix(dees-simple-login)
 use dees-tile for the login credentials container
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@design.estate/dees-catalog",
-  "version": "3.78.1",
+  "version": "3.79.0",
   "private": false,
   "description": "A comprehensive library that provides dynamic web components for building sophisticated and modern web applications using JavaScript and TypeScript.",
   "main": "dist_ts_web/index.js",
@@ -18,7 +18,7 @@
   "dependencies": {
     "@design.estate/dees-domtools": "^2.5.4",
     "@design.estate/dees-element": "^2.2.4",
-    "@design.estate/dees-wcctools": "^3.8.4",
+    "@design.estate/dees-wcctools": "^3.9.0",
     "@fortawesome/fontawesome-svg-core": "^7.2.0",
     "@fortawesome/free-brands-svg-icons": "^7.2.0",
     "@fortawesome/free-regular-svg-icons": "^7.2.0",

pnpm-lock.yaml

@@ -15,8 +15,8 @@ importers:
         specifier: ^2.2.4
         version: 2.2.4
       '@design.estate/dees-wcctools':
-        specifier: ^3.8.4
+        specifier: ^3.9.0
-        version: 3.8.4
+        version: 3.9.0
       '@fortawesome/fontawesome-svg-core':
         specifier: ^7.2.0
         version: 7.2.0
@@ -323,8 +323,8 @@ packages:
   '@design.estate/dees-element@2.2.4':
     resolution: {integrity: sha512-O9cA6flBMMd+pBwMQrZXwAWel9yVxgokolb+Em6gvkXxPJ0P/B5UDn4Vc2d4ts3ta55PTBm+l2dPeDVGx/bl7Q==}
 
-  '@design.estate/dees-wcctools@3.8.4':
+  '@design.estate/dees-wcctools@3.9.0':
-    resolution: {integrity: sha512-KpFK/azK+a/Xpq33pXKcho+tdFKVHhKZM5ArvHqo9QMwTczgp5DZZgowTDUuqAofjZwnuVfCPHK/Pw9e64N46A==}
+    resolution: {integrity: sha512-0vZBaGBEGIbl8hx+8BezIIea3U5T7iSHHF9VqlJZGf+nOFIW4zBAxcCljH8YzZ1Yayp6BEjxp/pQXjHN2YB3Jg==}
 
   '@emnapi/core@1.8.1':
     resolution: {integrity: sha512-AvT9QFpxK0Zd8J0jopedNm+w/2fIzvtPKPjqyw9jwvBaReTTqPBk9Hixaz7KbjimP+QNz605/XnjFcDAL2pqBg==}
@@ -2070,6 +2070,12 @@ packages:
   '@types/debug@4.1.12':
     resolution: {integrity: sha512-vIChWdVG3LG1SMxEvI/AK+FWJthlrqlTu7fbrlywTkkaONwk/UAGaULXRlf8vkzFBLVm0zkMdCquhL5aOjhXPQ==}
 
+  '@types/dom-mediacapture-transform@0.1.11':
+    resolution: {integrity: sha512-Y2p+nGf1bF2XMttBnsVPHUWzRRZzqUoJAKmiP10b5umnO6DDrWI0BrGDJy1pOHoOULVmGSfFNkQrAlC5dcj6nQ==}
+
+  '@types/dom-webcodecs@0.1.13':
+    resolution: {integrity: sha512-O5hkiFIcjjszPIYyUSyvScyvrBoV3NOEEZx/pMlsu44TKzWNkLVBBxnxJz42in5n3QIolYOcBYFCPZZ0h8SkwQ==}
+
   '@types/fs-extra@11.0.4':
     resolution: {integrity: sha512-yTbItCNreRooED33qjunPthRcSjERP1r4MqCZc7wv0u2sUkzTFp45tgUfS5+r7FrZPdmCCNflLhVSP/o+SemsQ==}
 
@@ -3136,6 +3142,9 @@ packages:
   mdurl@2.0.0:
     resolution: {integrity: sha512-Lf+9+2r+Tdp5wXDXC4PcIBjTDtq4UKjCPMQhKIuzpJNW0b96kVqSwW0bT7FhRSfmAiFYgP+SCRvdrDozfh0U5w==}
 
+  mediabunny@1.40.1:
+    resolution: {integrity: sha512-HU/stGzAkdWaJIly6ypbUVgAUvT9kt39DIg0IaErR7/1fwtTmgUYs4i8uEPYcgcjPjbB9gtBmUXOLnXi6J2LDw==}
+
   memory-pager@1.5.0:
     resolution: {integrity: sha512-ZS4Bp4r/Zoeq6+NLJpP+0Zzm0pR8whtGPf1XExKLJBAczGMnSi3It14OiNCStjQjM6NU1okjQGSxgEZN8eBYKg==}
 
@@ -4711,7 +4720,7 @@ snapshots:
     dependencies:
       '@design.estate/dees-domtools': 2.5.4
       '@design.estate/dees-element': 2.2.4
-      '@design.estate/dees-wcctools': 3.8.4
+      '@design.estate/dees-wcctools': 3.9.0
       '@fortawesome/fontawesome-svg-core': 7.2.0
       '@fortawesome/free-brands-svg-icons': 7.2.0
       '@fortawesome/free-regular-svg-icons': 7.2.0
@@ -4787,12 +4796,13 @@ snapshots:
       - supports-color
       - vue
 
-  '@design.estate/dees-wcctools@3.8.4':
+  '@design.estate/dees-wcctools@3.9.0':
     dependencies:
       '@design.estate/dees-domtools': 2.5.4
       '@design.estate/dees-element': 2.2.4
       '@push.rocks/smartdelay': 3.0.5
       lit: 3.3.2
+      mediabunny: 1.40.1
     transitivePeerDependencies:
       - '@nuxt/kit'
       - react
@@ -7245,6 +7255,12 @@ snapshots:
     dependencies:
       '@types/ms': 2.1.0
 
+  '@types/dom-mediacapture-transform@0.1.11':
+    dependencies:
+      '@types/dom-webcodecs': 0.1.13
+
+  '@types/dom-webcodecs@0.1.13': {}
+
   '@types/fs-extra@11.0.4':
     dependencies:
       '@types/jsonfile': 6.1.4
@@ -8468,6 +8484,11 @@ snapshots:
 
   mdurl@2.0.0: {}
 
+  mediabunny@1.40.1:
+    dependencies:
+      '@types/dom-mediacapture-transform': 0.1.11
+      '@types/dom-webcodecs': 0.1.13
+
   memory-pager@1.5.0: {}
 
   micromark-core-commonmark@2.0.3:

readme.md

@@ -1524,15 +1524,25 @@ Multi-step navigation component for guided user flows.
 ```
 
 #### `DeesProgressbar`
-Progress indicator component for tracking completion status.
+Progress indicator component for tracking completion status, with optional fixed-height status text or terminal-style recent activity output.
 
 ```typescript
 <dees-progressbar
-  value={75}
+  .percentage=${75}
   label="Uploading"
-  showPercentage
+  statusText="Uploading thumbnails to edge cache..."
-  type="determinate"  // Options: determinate, indeterminate
+  .statusRows=${2}
-  status="normal"     // Options: normal, success, warning, error
+></dees-progressbar>
+
+<dees-progressbar
+  label="Installing dependencies"
+  .indeterminate=${true}
+  .statusRows=${4}
+  .terminalLines=${[
+    'Resolving workspace packages',
+    'Downloading tarballs',
+    'Linking local binaries'
+  ]}
 ></dees-progressbar>
 ```
 

test/test.dees-table-liveupdates.chromium.ts

@@ -0,0 +1,167 @@
+import { expect, tap } from '@git.zone/tstest/tapbundle';
+import * as deesCatalog from '../ts_web/index.js';
+import type {
+  Column,
+  ISortDescriptor,
+} from '../ts_web/elements/00group-dataview/dees-table/index.js';
+
+interface ITestRow {
+  id: string;
+  score: number;
+  label: string;
+}
+
+const testColumns: Column<ITestRow>[] = [
+  { key: 'id', header: 'ID' },
+  { key: 'score', header: 'Score' },
+  { key: 'label', header: 'Label' },
+];
+
+const scoreSort: ISortDescriptor[] = [{ key: 'score', dir: 'desc' }];
+
+const waitForNextFrame = async () => {
+  await new Promise<void>((resolve) => {
+    requestAnimationFrame(() => resolve());
+  });
+};
+
+const waitForMacrotask = async () => {
+  await new Promise<void>((resolve) => {
+    window.setTimeout(() => resolve(), 0);
+  });
+};
+
+const settleTable = async (table: deesCatalog.DeesTable<ITestRow>) => {
+  await table.updateComplete;
+  await waitForNextFrame();
+  await waitForMacrotask();
+  await table.updateComplete;
+};
+
+const createRows = (iteration: number): ITestRow[] => {
+  const cycle = iteration % 3;
+
+  if (cycle === 0) {
+    return [
+      { id: 'alpha', score: 60, label: `Alpha ${iteration}` },
+      { id: 'beta', score: 20, label: `Beta ${iteration}` },
+      { id: 'gamma', score: 40, label: `Gamma ${iteration}` },
+    ];
+  }
+
+  if (cycle === 1) {
+    return [
+      { id: 'alpha', score: 30, label: `Alpha ${iteration}` },
+      { id: 'beta', score: 70, label: `Beta ${iteration}` },
+      { id: 'gamma', score: 50, label: `Gamma ${iteration}` },
+    ];
+  }
+
+  return [
+    { id: 'alpha', score: 55, label: `Alpha ${iteration}` },
+    { id: 'beta', score: 35, label: `Beta ${iteration}` },
+    { id: 'gamma', score: 75, label: `Gamma ${iteration}` },
+  ];
+};
+
+const createTable = (
+  rows: ITestRow[],
+  highlightUpdates: 'none' | 'flash'
+): deesCatalog.DeesTable<ITestRow> => {
+  const table = new deesCatalog.DeesTable<ITestRow>();
+  table.searchable = false;
+  table.columns = testColumns;
+  table.rowKey = 'id';
+  table.sortBy = scoreSort;
+  table.highlightUpdates = highlightUpdates;
+  table.data = rows;
+  document.body.appendChild(table);
+  return table;
+};
+
+const countComments = (root: Node): number => {
+  const walker = document.createTreeWalker(root, NodeFilter.SHOW_COMMENT);
+  let count = 0;
+  while (walker.nextNode()) count++;
+  return count;
+};
+
+const getBodyRows = (table: deesCatalog.DeesTable<ITestRow>): HTMLTableRowElement[] =>
+  Array.from(
+    table.shadowRoot?.querySelectorAll('tbody tr[data-row-idx]') ?? []
+  ) as HTMLTableRowElement[];
+
+const getRenderedRowIds = (table: deesCatalog.DeesTable<ITestRow>): string[] =>
+  getBodyRows(table).map((row) => row.cells[0]?.textContent?.trim() ?? '');
+
+const getRenderedRowMap = (
+  table: deesCatalog.DeesTable<ITestRow>
+): Map<string, HTMLTableRowElement> => {
+  const rowMap = new Map<string, HTMLTableRowElement>();
+  for (const row of getBodyRows(table)) {
+    const rowId = row.cells[0]?.textContent?.trim() ?? '';
+    if (rowId) rowMap.set(rowId, row);
+  }
+  return rowMap;
+};
+
+tap.test('dees-table avoids repeated width measurement and comment growth on live updates', async () => {
+  const table = new deesCatalog.DeesTable<ITestRow>();
+  let widthMeasureCalls = 0;
+  const originalDetermineColumnWidths = table.determineColumnWidths.bind(table);
+  table.determineColumnWidths = (async () => {
+    widthMeasureCalls++;
+    await originalDetermineColumnWidths();
+  }) as typeof table.determineColumnWidths;
+
+  table.searchable = false;
+  table.columns = testColumns;
+  table.rowKey = 'id';
+  table.sortBy = scoreSort;
+  table.highlightUpdates = 'none';
+  table.data = createRows(0);
+  document.body.appendChild(table);
+
+  try {
+    await settleTable(table);
+
+    const initialWidthMeasureCalls = widthMeasureCalls;
+    const initialCommentCount = countComments(table.shadowRoot!);
+
+    expect(initialWidthMeasureCalls).toBeGreaterThan(0);
+
+    for (let iteration = 1; iteration <= 10; iteration++) {
+      table.data = createRows(iteration);
+      await settleTable(table);
+    }
+
+    expect(widthMeasureCalls).toEqual(initialWidthMeasureCalls);
+    expect(countComments(table.shadowRoot!)).toEqual(initialCommentCount);
+  } finally {
+    table.remove();
+  }
+});
+
+tap.test('dees-table reuses row DOM while flashing live-sorted updates', async () => {
+  const table = createTable(createRows(0), 'flash');
+
+  try {
+    await settleTable(table);
+
+    const initialRowMap = getRenderedRowMap(table);
+
+    table.data = createRows(1);
+    await settleTable(table);
+
+    const updatedRowMap = getRenderedRowMap(table);
+
+    expect(getRenderedRowIds(table)).toEqual(['beta', 'gamma', 'alpha']);
+    expect(updatedRowMap.get('alpha')).toEqual(initialRowMap.get('alpha'));
+    expect(updatedRowMap.get('beta')).toEqual(initialRowMap.get('beta'));
+    expect(updatedRowMap.get('gamma')).toEqual(initialRowMap.get('gamma'));
+  } finally {
+    table.remove();
+  }
+});
+
+export default tap.start();

ts_web/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@design.estate/dees-catalog',
-  version: '3.78.1',
+  version: '3.79.0',
   description: 'A comprehensive library that provides dynamic web components for building sophisticated and modern web applications using JavaScript and TypeScript.'
 }

ts_web/elements/00group-dataview/dees-table/dees-table.ts

@@ -293,9 +293,9 @@ export class DeesTable<T> extends DeesElement {
   private accessor __floatingActive: boolean = false;
 
   // ─── Flash-on-update state (only populated when highlightUpdates === 'flash') ──
-  /** rowId → set of colKey strings currently flashing. */
+  /** rowId → (colKey → flash token) for cells currently flashing. */
   @state()
-  private accessor __flashingCells: Map<string, Set<string>> = new Map();
+  private accessor __flashingCells: Map<string, Map<string, number>> = new Map();
 
   /** rowId → (colKey → last-seen resolved cell value). Populated per diff pass. */
   private __prevSnapshot?: Map<string, Map<string, unknown>>;
@@ -303,7 +303,7 @@ export class DeesTable<T> extends DeesElement {
   /** Single shared timer that clears __flashingCells after highlightDuration ms. */
   private __flashClearTimer?: ReturnType<typeof setTimeout>;
 
-  /** Monotonic counter bumped each flash batch so directives.keyed recreates the cell node and restarts the animation. */
+  /** Monotonic counter bumped per flash batch so only changed cells restart their animation. */
   private __flashTick: number = 0;
 
   /** One-shot console.warn gate for missing rowKey in flash mode. */
@@ -317,7 +317,7 @@ export class DeesTable<T> extends DeesElement {
     columns: any;
     augment: boolean;
     displayFunction: any;
-    data: any;
+    displayShapeKey: string;
     out: Column<T>[];
   };
   private __memoViewData?: {
@@ -329,8 +329,13 @@ export class DeesTable<T> extends DeesElement {
     effectiveColumns: Column<T>[];
     out: T[];
   };
-  /** Tracks the (data, columns) pair that `determineColumnWidths()` last sized for. */
+  /** Tracks the layout inputs that `determineColumnWidths()` last sized for. */
-  private __columnsSizedFor?: { data: any; columns: any };
+  private __columnsSizedFor?: {
+    effectiveColumns: Column<T>[];
+    showSelectionCheckbox: boolean;
+    inRowActionCount: number;
+    table: HTMLTableElement;
+  };
 
   // ─── Virtualization state ────────────────────────────────────────────
   /** Estimated row height (px). Measured once from the first rendered row. */
@@ -409,15 +414,7 @@ export class DeesTable<T> extends DeesElement {
         const view: T[] = (this as any)._lastViewData ?? [];
         const item = view.find((r) => this.getRowId(r) === this.__focusedCell!.rowId);
         if (!item) return;
-        const allCols: Column<T>[] =
+        const allCols = this.__getEffectiveColumns();
-          Array.isArray(this.columns) && this.columns.length > 0
-            ? computeEffectiveColumnsFn(
-                this.columns,
-                this.augmentFromDisplayFunction,
-                this.displayFunction,
-                this.data
-              )
-            : computeColumnsFromDisplayFunctionFn(this.displayFunction, this.data);
         const col = allCols.find((c) => String(c.key) === this.__focusedCell!.colKey);
         if (!col || !this.__isColumnEditable(col)) return;
         eventArg.preventDefault();
@@ -469,15 +466,24 @@ export class DeesTable<T> extends DeesElement {
    * that affect it. Avoids re-running `computeEffectiveColumnsFn` /
    * `computeColumnsFromDisplayFunctionFn` on every Lit update.
    */
+  private __getDisplayFunctionShapeKey(): string {
+    if (!this.data || this.data.length === 0) return '';
+    const firstTransformedItem = this.displayFunction(this.data[0]) ?? {};
+    return Object.keys(firstTransformedItem).join('\u0000');
+  }
+
   private __getEffectiveColumns(): Column<T>[] {
     const usingColumns = Array.isArray(this.columns) && this.columns.length > 0;
+    const displayShapeKey = !usingColumns || this.augmentFromDisplayFunction
+      ? this.__getDisplayFunctionShapeKey()
+      : '';
     const cache = this.__memoEffectiveCols;
     if (
       cache &&
       cache.columns === this.columns &&
       cache.augment === this.augmentFromDisplayFunction &&
       cache.displayFunction === this.displayFunction &&
-      cache.data === this.data
+      cache.displayShapeKey === displayShapeKey
     ) {
       return cache.out;
     }
@@ -493,7 +499,7 @@ export class DeesTable<T> extends DeesElement {
       columns: this.columns,
       augment: this.augmentFromDisplayFunction,
       displayFunction: this.displayFunction,
-      data: this.data,
+      displayShapeKey,
       out,
     };
     return out;
@@ -543,6 +549,9 @@ export class DeesTable<T> extends DeesElement {
   public render(): TemplateResult {
     const effectiveColumns = this.__getEffectiveColumns();
     const viewData = this.__getViewData(effectiveColumns);
+    const headerActions = this.getActionsForType('header');
+    const footerActions = this.getActionsForType('footer');
+    const inRowActions = this.getActionsForType('inRow');
     (this as any)._lastViewData = viewData;
 
     // Virtualization slice — only the rows in `__virtualRange` actually
@@ -572,29 +581,22 @@ export class DeesTable<T> extends DeesElement {
             <div class="heading heading2">${this.heading2}</div>
           </div>
           <div class="headerActions">
-            ${directives.resolveExec(async () => {
+            ${headerActions.map(
-              const resultArray: TemplateResult[] = [];
+              (action) => html`<div
-              for (const action of this.dataActions) {
+                class="headerAction"
-                if (!action.type?.includes('header')) continue;
+                @click=${() => {
-                resultArray.push(
+                  action.actionFunc({
-                  html`<div
+                    item: this.selectedDataRow,
-                    class="headerAction"
+                    table: this,
-                    @click=${() => {
+                  });
-                      action.actionFunc({
+                }}
-                        item: this.selectedDataRow,
+              >
-                        table: this,
+                ${action.iconName
-                      });
+                  ? html`<dees-icon .iconSize=${14} .icon=${action.iconName}></dees-icon>
-                    }}
+                      ${action.name}`
-                  >
+                  : action.name}
-                    ${action.iconName
+              </div>`
-                      ? html`<dees-icon .iconSize=${14} .icon=${action.iconName}></dees-icon>
+            )}
-                          ${action.name}`
-                      : action.name}
-                  </div>`
-                );
-              }
-              return resultArray;
-            })}
           </div>
         </div>
         <div class="headingSeparation"></div>
@@ -658,11 +660,11 @@ export class DeesTable<T> extends DeesElement {
                     : html``}
                   ${directives.repeat(
                     renderRows,
-                    (itemArg, sliceIdx) => `${this.getRowId(itemArg)}::${renderStart + sliceIdx}`,
+                    (itemArg) => this.getRowId(itemArg),
                     (itemArg, sliceIdx) => {
                     const rowIndex = renderStart + sliceIdx;
                     const rowId = this.getRowId(itemArg);
-                    const flashSet = this.__flashingCells.get(rowId);
+                    const flashTokens = this.__flashingCells.get(rowId);
                     return html`
                       <tr
                         data-row-idx=${rowIndex}
@@ -694,7 +696,8 @@ export class DeesTable<T> extends DeesElement {
                             const isEditing =
                               this.__editingCell?.rowId === rowId &&
                               this.__editingCell?.colKey === editKey;
-                            const isFlashing = !!flashSet?.has(editKey);
+                            const flashToken = flashTokens?.get(editKey);
+                            const isFlashing = flashToken !== undefined;
                             const useFlashBorder = isFlashing && !!col.flashBorder;
                             const cellClasses = [
                               isEditable ? 'editable' : '',
@@ -720,7 +723,7 @@ export class DeesTable<T> extends DeesElement {
                               >
                                 ${isFlashing
                                   ? directives.keyed(
-                                      `${rowId}:${editKey}:${this.__flashTick}`,
+                                      `${rowId}:${editKey}:${flashToken}`,
                                       innerHtml
                                     )
                                   : innerHtml}
@@ -728,11 +731,11 @@ export class DeesTable<T> extends DeesElement {
                             `;
                           })}
                         ${(() => {
-                          if (this.dataActions && this.dataActions.length > 0) {
+                          if (inRowActions.length > 0) {
                             return html`
                               <td class="actionsCol">
                                 <div class="actionsContainer">
-                                  ${this.getActionsForType('inRow').map(
+                                  ${inRowActions.map(
                                     (actionArg) => html`
                                       <div
                                         class="action"
@@ -780,29 +783,22 @@ export class DeesTable<T> extends DeesElement {
             selected
           </div>
           <div class="footerActions">
-            ${directives.resolveExec(async () => {
+            ${footerActions.map(
-              const resultArray: TemplateResult[] = [];
+              (action) => html`<div
-              for (const action of this.dataActions) {
+                class="footerAction"
-                if (!action.type?.includes('footer')) continue;
+                @click=${() => {
-                resultArray.push(
+                  action.actionFunc({
-                  html`<div
+                    item: this.selectedDataRow,
-                    class="footerAction"
+                    table: this,
-                    @click=${() => {
+                  });
-                      action.actionFunc({
+                }}
-                        item: this.selectedDataRow,
+              >
-                        table: this,
+                ${action.iconName
-                      });
+                  ? html`<dees-icon .iconSize=${14} .icon=${action.iconName}></dees-icon>
-                    }}
+                      ${action.name}`
-                  >
+                  : action.name}
-                    ${action.iconName
+              </div>`
-                      ? html`<dees-icon .iconSize=${14} .icon=${action.iconName}></dees-icon>
+            )}
-                          ${action.name}`
-                      : action.name}
-                  </div>`
-                );
-              }
-              return resultArray;
-            })}
           </div>
         </div>
       </dees-tile>
@@ -1160,7 +1156,7 @@ export class DeesTable<T> extends DeesElement {
   /**
    * Measures the height of the first rendered body row and stores it for
    * subsequent virtualization math. Idempotent — only measures once per
-   * `data`/`columns` pair (cleared in `updated()` when those change).
+   * rendered table layout (cleared in `updated()` when that layout changes).
    */
   private __measureRowHeight() {
     if (!this.virtualized || this.__rowHeightMeasured) return;
@@ -1426,20 +1422,16 @@ export class DeesTable<T> extends DeesElement {
     if (newlyFlashing.size === 0) return;
 
     // Merge with any in-flight flashes from a rapid second update so a cell
-    // that changes twice before its animation ends gets a single clean
+    // that changes twice before its animation ends gets a clean restart,
-    // restart (via __flashTick / directives.keyed) instead of stacking.
+    // while unrelated cells keep their existing DOM subtree.
+    const flashToken = ++this.__flashTick;
+    const nextFlashingCells = new Map(this.__flashingCells);
     for (const [rowId, cols] of newlyFlashing) {
-      const existing = this.__flashingCells.get(rowId);
+      const existing = new Map(nextFlashingCells.get(rowId) ?? []);
-      if (existing) {
+      for (const colKey of cols) existing.set(colKey, flashToken);
-        for (const c of cols) existing.add(c);
+      nextFlashingCells.set(rowId, existing);
-      } else {
-        this.__flashingCells.set(rowId, cols);
-      }
     }
-    this.__flashTick++;
+    this.__flashingCells = nextFlashingCells;
-    // Reactivity nudge: we've mutated the Map in place, so give Lit a fresh
-    // reference so the @state change fires for render.
-    this.__flashingCells = new Map(this.__flashingCells);
     if (this.__flashClearTimer) clearTimeout(this.__flashClearTimer);
     this.__flashClearTimer = setTimeout(() => {
       this.__flashingCells = new Map();
@@ -1449,6 +1441,9 @@ export class DeesTable<T> extends DeesElement {
 
   public async updated(changedProperties: Map<string | number | symbol, unknown>): Promise<void> {
     super.updated(changedProperties);
+    const effectiveColumns = this.__getEffectiveColumns();
+    const currentTable = this.shadowRoot?.querySelector('table') ?? null;
+    const inRowActionCount = this.getActionsForType('inRow').length;
 
     // Feed highlightDuration into the CSS variable so JS and CSS stay in
     // sync via a single source of truth.
@@ -1456,15 +1451,23 @@ export class DeesTable<T> extends DeesElement {
       this.style.setProperty('--dees-table-flash-duration', `${this.highlightDuration}ms`);
     }
 
-    // Only re-measure column widths when the data or schema actually changed
+    // Only re-measure column widths when layout-affecting inputs changed or
-    // (or on first paint). `determineColumnWidths` is the single biggest
+    // when a new <table> element was rendered after previously having none.
-    // first-paint cost — it forces multiple layout flushes per row.
+    const columnLayoutChanged =
-    const dataOrColsChanged =
+      !!currentTable && (
-      !this.__columnsSizedFor ||
+        !this.__columnsSizedFor ||
-      this.__columnsSizedFor.data !== this.data ||
+        this.__columnsSizedFor.effectiveColumns !== effectiveColumns ||
-      this.__columnsSizedFor.columns !== this.columns;
+        this.__columnsSizedFor.showSelectionCheckbox !== this.showSelectionCheckbox ||
-    if (dataOrColsChanged) {
+        this.__columnsSizedFor.inRowActionCount !== inRowActionCount ||
-      this.__columnsSizedFor = { data: this.data, columns: this.columns };
+        this.__columnsSizedFor.table !== currentTable
+      );
+    if (currentTable && columnLayoutChanged) {
+      this.__columnsSizedFor = {
+        effectiveColumns,
+        showSelectionCheckbox: this.showSelectionCheckbox,
+        inRowActionCount,
+        table: currentTable,
+      };
       this.determineColumnWidths();
       // Force re-measure of row height; structure may have changed.
       this.__rowHeightMeasured = false;
@@ -1502,7 +1505,7 @@ export class DeesTable<T> extends DeesElement {
     if (
       !this.fixedHeight &&
       this.data.length > 0 &&
-      (this.__floatingActive || dataOrColsChanged)
+      (this.__floatingActive || columnLayoutChanged)
     ) {
       this.__syncFloatingHeader();
     }
@@ -1804,10 +1807,7 @@ export class DeesTable<T> extends DeesElement {
    * Used by the modal helper to render human-friendly labels.
    */
   private _lookupColumnByKey(key: string): Column<T> | undefined {
-    const usingColumns = Array.isArray(this.columns) && this.columns.length > 0;
+    const effective = this.__getEffectiveColumns();
-    const effective = usingColumns
-      ? computeEffectiveColumnsFn(this.columns, this.augmentFromDisplayFunction, this.displayFunction, this.data)
-      : computeColumnsFromDisplayFunctionFn(this.displayFunction, this.data);
     return effective.find((c) => String(c.key) === key);
   }
 
@@ -2543,9 +2543,7 @@ export class DeesTable<T> extends DeesElement {
     const view: T[] = (this as any)._lastViewData ?? [];
     if (view.length === 0) return;
     // Recompute editable columns from the latest effective set.
-    const allCols: Column<T>[] = Array.isArray(this.columns) && this.columns.length > 0
+    const allCols = this.__getEffectiveColumns();
-      ? computeEffectiveColumnsFn(this.columns, this.augmentFromDisplayFunction, this.displayFunction, this.data)
-      : computeColumnsFromDisplayFunctionFn(this.displayFunction, this.data);
     const editableCols = this.__editableColumns(allCols);
     if (editableCols.length === 0) return;
 

ts_web/elements/00group-feedback/dees-progressbar/dees-progressbar.demo.ts

@@ -1,11 +1,245 @@
-import { html } from '@design.estate/dees-element';
+import { html, css, cssManager } from '@design.estate/dees-element';
-
+import '@design.estate/dees-wcctools/demotools';
-import { DeesProgressbar } from '../dees-progressbar/dees-progressbar.js';
+import type { DeesProgressbar } from './dees-progressbar.js';
 
 export const demoFunc = () => {
+  const terminalSnapshots = [
+    ['Resolving workspace packages'],
+    ['Resolving workspace packages', 'Downloading ui-assets.tar.gz'],
+    ['Resolving workspace packages', 'Downloading ui-assets.tar.gz', 'Verifying checksum'],
+    ['Resolving workspace packages', 'Downloading ui-assets.tar.gz', 'Verifying checksum', 'Extracting release bundle'],
+    ['Resolving workspace packages', 'Downloading ui-assets.tar.gz', 'Verifying checksum', 'Extracting release bundle', 'Restarting application'],
+  ];
+
+  const getUploadStatus = (percentage: number): string => {
+    if (percentage >= 100) {
+      return 'Upload complete. Finalizing package manifest...';
+    }
+
+    if (percentage >= 82) {
+      return 'Verifying checksums before handoff...';
+    }
+
+    if (percentage >= 55) {
+      return 'Uploading thumbnails to edge cache...';
+    }
+
+    if (percentage >= 25) {
+      return 'Streaming source files to the remote worker...';
+    }
+
+    return 'Preparing archive and dependency graph...';
+  };
+
   return html`
-    <dees-progressbar
+    <dees-demowrapper .runAfterRender=${async (elementArg: HTMLElement) => {
-      .percentage=${50}
+      const liveProgressbar = elementArg.querySelector('#live-progress') as DeesProgressbar | null;
-    ></dees-progressbar>
+      const terminalProgressbar = elementArg.querySelector('#terminal-progress') as DeesProgressbar | null;
+      const demoElement = elementArg as HTMLElement & {
+        __progressbarDemoIntervalId?: number;
+      };
+
+      if (!liveProgressbar || !terminalProgressbar) {
+        return;
+      }
+
+      if (demoElement.__progressbarDemoIntervalId) {
+        window.clearInterval(demoElement.__progressbarDemoIntervalId);
+      }
+
+      let livePercentage = 12;
+      let terminalSnapshotIndex = 0;
+
+      const updateDemo = () => {
+        liveProgressbar.percentage = livePercentage;
+        liveProgressbar.statusText = getUploadStatus(livePercentage);
+
+        terminalProgressbar.terminalLines = [...terminalSnapshots[terminalSnapshotIndex]];
+        terminalProgressbar.percentage = Math.min(100, (terminalSnapshotIndex + 1) * 20);
+        terminalProgressbar.indeterminate = terminalSnapshotIndex < terminalSnapshots.length - 1;
+
+        livePercentage = livePercentage >= 100 ? 12 : Math.min(100, livePercentage + 11);
+        terminalSnapshotIndex = terminalSnapshotIndex >= terminalSnapshots.length - 1 ? 0 : terminalSnapshotIndex + 1;
+      };
+
+      updateDemo();
+      demoElement.__progressbarDemoIntervalId = window.setInterval(updateDemo, 1400);
+    }}>
+      <style>
+        ${css`
+          .demoBox {
+            position: relative;
+            background: ${cssManager.bdTheme('hsl(0 0% 95%)', 'hsl(0 0% 9%)')};
+            width: 100%;
+            height: 100%;
+            box-sizing: border-box;
+            padding: 40px;
+            display: flex;
+            flex-direction: column;
+            gap: 24px;
+          }
+
+          .demoIntro {
+            max-width: 720px;
+            color: ${cssManager.bdTheme('hsl(215 20% 30%)', 'hsl(215 18% 76%)')};
+            font-size: 14px;
+            line-height: 1.6;
+          }
+
+          .showcaseGrid {
+            display: grid;
+            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
+            gap: 18px;
+          }
+
+          .showcaseCard {
+            background: ${cssManager.bdTheme('rgba(255,255,255,0.78)', 'rgba(255,255,255,0.04)')};
+            border: 1px solid ${cssManager.bdTheme('hsl(210 22% 86%)', 'hsl(210 10% 18%)')};
+            border-radius: 16px;
+            padding: 20px;
+            display: flex;
+            flex-direction: column;
+            gap: 16px;
+            backdrop-filter: blur(8px);
+          }
+
+          .showcaseCard.wide {
+            grid-column: span 2;
+          }
+
+          .showcaseCard h3 {
+            margin: 0;
+            font-size: 15px;
+            font-weight: 600;
+          }
+
+          .showcaseCard p {
+            margin: 0;
+            color: ${cssManager.bdTheme('hsl(215 14% 40%)', 'hsl(215 10% 66%)')};
+            font-size: 13px;
+            line-height: 1.55;
+          }
+
+          .progressStack {
+            display: flex;
+            flex-direction: column;
+            gap: 14px;
+          }
+
+          .codeLabel {
+            font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
+            font-size: 11px;
+            color: ${cssManager.bdTheme('hsl(215 14% 44%)', 'hsl(215 10% 70%)')};
+            letter-spacing: 0.03em;
+            text-transform: uppercase;
+          }
+
+          @media (max-width: 900px) {
+            .demoBox {
+              padding: 24px;
+            }
+
+            .showcaseCard.wide {
+              grid-column: span 1;
+            }
+          }
+        `}
+      </style>
+      <div class="demoBox">
+        <div class="demoIntro">
+          <code>dees-progressbar</code> can now pair a classic progress bar with a fixed-height status area. Use simple status text for clear user-facing updates or switch to terminal-like lines when you want recent steps to stay visible without causing layout jumps.
+        </div>
+        <div class="showcaseGrid">
+          <section class="showcaseCard">
+            <div class="codeLabel">Determinate</div>
+            <h3>Percentage plus current task</h3>
+            <p>Use a label, a percentage, and one short status line when the work is measurable.</p>
+            <div class="progressStack">
+              <dees-progressbar
+                label="Media upload"
+                .percentage=${68}
+                statusText="Uploading thumbnails to edge cache..."
+                .statusRows=${2}
+              ></dees-progressbar>
+              <dees-progressbar
+                label="Asset sync"
+                .percentage=${100}
+                statusText="All files are synced and available."
+                .statusRows=${2}
+              ></dees-progressbar>
+            </div>
+          </section>
+
+          <section class="showcaseCard">
+            <div class="codeLabel">Indeterminate</div>
+            <h3>Spinner-style text indicator</h3>
+            <p>When there is no trustworthy percentage yet, keep the bar moving and let the text explain what is happening.</p>
+            <div class="progressStack">
+              <dees-progressbar
+                label="Dependency install"
+                .indeterminate=${true}
+                statusText="Downloading package metadata..."
+                .statusRows=${2}
+              ></dees-progressbar>
+              <dees-progressbar
+                label="Queued job"
+                .percentage=${32}
+                .showPercentage=${false}
+                statusText="Waiting for a worker slot to become available..."
+                .statusRows=${2}
+              ></dees-progressbar>
+            </div>
+          </section>
+
+          <section class="showcaseCard wide">
+            <div class="codeLabel">Terminal Lines</div>
+            <h3>Fixed-height terminal-style status output</h3>
+            <p>The panel stays the same height while the latest step stays visible. This is useful for update flows, downloads, and staged background work.</p>
+            <dees-progressbar
+              id="terminal-progress"
+              label="Release bundle"
+              .percentage=${20}
+              .indeterminate=${true}
+              .statusRows=${4}
+              .terminalLines=${terminalSnapshots[0]}
+            ></dees-progressbar>
+          </section>
+
+          <section class="showcaseCard">
+            <div class="codeLabel">Live Demo</div>
+            <h3>Updating percentage and text together</h3>
+            <p>A single component can express both how far the job is and which phase is currently active.</p>
+            <dees-progressbar
+              id="live-progress"
+              label="Customer export"
+              .percentage=${12}
+              statusText="Preparing archive and dependency graph..."
+              .statusRows=${2}
+            ></dees-progressbar>
+          </section>
+
+          <section class="showcaseCard">
+            <div class="codeLabel">Compatibility</div>
+            <h3>Legacy <code>value</code> and <code>progress</code> inputs</h3>
+            <p>Existing usages can keep passing percentages directly or normalized progress values from 0 to 1.</p>
+            <div class="progressStack">
+              <dees-progressbar
+                label="From value"
+                .value=${75}
+                statusText="Migrating existing readme-style usage..."
+                .statusRows=${2}
+              ></dees-progressbar>
+              <dees-progressbar
+                label="From progress"
+                .progress=${0.42}
+                .showPercentage=${false}
+                statusText="Rendering normalized progress input..."
+                .statusRows=${2}
+              ></dees-progressbar>
+            </div>
+          </section>
+        </div>
+      </div>
+    </dees-demowrapper>
   `;
-}
+};

ts_web/elements/00group-feedback/dees-progressbar/dees-progressbar.ts

@@ -1,4 +1,3 @@
-import * as plugins from '../../00plugins.js';
 import * as colors from '../../00colors.js';
 import { demoFunc } from './dees-progressbar.demo.js';
 import {
@@ -6,94 +5,342 @@ import {
   html,
   DeesElement,
   property,
-  type TemplateResult,
   cssManager,
   css,
-  type CSSResult,
-  unsafeCSS,
-  unsafeHTML,
   state,
 } from '@design.estate/dees-element';
-
-import * as domtools from '@design.estate/dees-domtools';
 import { themeDefaultStyles } from '../../00theme.js';
 
+declare global {
+  interface HTMLElementTagNameMap {
+    'dees-progressbar': DeesProgressbar;
+  }
+}
+
 @customElement('dees-progressbar')
 export class DeesProgressbar extends DeesElement {
-  // STATIC
   public static demo = demoFunc;
   public static demoGroups = ['Feedback'];
 
-  // INSTANCE
   @property({
     type: Number,
   })
   accessor percentage = 0;
 
+  // `value` and `progress` keep existing readme/internal usages working.
+  @property({
+    type: Number,
+  })
+  accessor value: number | null = null;
+
+  @property({
+    type: Number,
+  })
+  accessor progress: number | null = null;
+
+  @property({
+    type: String,
+  })
+  accessor label = '';
+
+  @property({
+    type: String,
+  })
+  accessor statusText = '';
+
+  @property({
+    type: Array,
+  })
+  accessor terminalLines: string[] = [];
+
+  @property({
+    type: Number,
+  })
+  accessor statusRows = 3;
+
+  @property({
+    type: Boolean,
+  })
+  accessor indeterminate = false;
+
+  @property({
+    type: Boolean,
+  })
+  accessor showPercentage = true;
+
+  @state()
+  accessor activeSpinnerFrame = 0;
+
+  private spinnerIntervalId: number | null = null;
+  private readonly spinnerFrames = ['|', '/', '-', '\\'];
+
   public static styles = [
     themeDefaultStyles,
     cssManager.defaultStyles,
     css`
-      /* TODO: Migrate hardcoded values to --dees-* CSS variables */
       :host {
+        display: block;
         color: ${cssManager.bdTheme(colors.bright.text, colors.dark.text)};
       }
+
       .progressBarContainer {
-        padding: 8px;
         min-width: 200px;
+        padding: 8px;
+        box-sizing: border-box;
+      }
+
+      .progressHeader {
+        display: flex;
+        justify-content: space-between;
+        align-items: baseline;
+        gap: 12px;
+        margin-bottom: 8px;
+      }
+
+      .progressLabel {
+        font-size: 14px;
+        font-weight: 500;
+        line-height: 1.3;
+      }
+
+      .progressValue {
+        font-size: 12px;
+        line-height: 1.3;
+        color: ${cssManager.bdTheme('hsl(215 15% 40%)', 'hsl(215 15% 70%)')};
+        font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
       }
 
       .progressBar {
-        background: ${cssManager.bdTheme('#eeeeeb', '#444')};
+        position: relative;
-        height: 8px;
+        overflow: hidden;
         width: 100%;
-        border-radius: 4px;
+        height: 8px;
-        border-top: 0.5px solid ${cssManager.bdTheme('none', '#555')};
+        border-radius: 999px;
+        background: ${cssManager.bdTheme('#eeeeeb', '#444')};
+        border-top: 0.5px solid ${cssManager.bdTheme('transparent', '#555')};
       }
 
       .progressBarFill {
+        height: 100%;
+        border-radius: inherit;
         background: ${cssManager.bdTheme(colors.dark.blueActive, colors.bright.blueActive)};
-        height: 8px;
+        transition: width 0.2s ease;
-        margin-top: -0.5px;
-        transition: 0.2s width;
-        border-radius: 4px;
-        width: 0px;
-        border-top: 0.5 solid ${cssManager.bdTheme('none', '#398fff')};
       }
 
-      .progressText {
+      .progressBarFill.indeterminate {
-        padding: 8px;
+        width: 34%;
+        transition: none;
+        animation: indeterminateSlide 1.2s ease-in-out infinite;
+      }
+
+      .statusPanel {
+        margin-top: 10px;
+        height: calc(var(--status-rows, 3) * 1.35em + 16px);
+        min-height: calc(var(--status-rows, 3) * 1.35em + 16px);
+        padding: 8px 10px;
+        box-sizing: border-box;
+        border-radius: 8px;
+        border: 1px solid ${cssManager.bdTheme('hsl(210 20% 86%)', 'hsl(210 10% 26%)')};
+        background: ${cssManager.bdTheme('hsl(210 33% 98%)', 'hsl(220 20% 10%)')};
+        font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
+        font-size: 12px;
+        line-height: 1.35;
+        overflow: hidden;
+      }
+
+      .statusTextRow,
+      .terminalLine {
+        display: flex;
+        align-items: flex-start;
+        gap: 8px;
+        min-height: 1.35em;
+      }
+
+      .terminalScroller {
+        height: 100%;
+        overflow: auto;
+      }
+
+      .terminalScroller::-webkit-scrollbar {
+        width: 6px;
+      }
+
+      .terminalScroller::-webkit-scrollbar-thumb {
+        background: ${cssManager.bdTheme('hsl(215 18% 78%)', 'hsl(215 10% 34%)')};
+        border-radius: 999px;
+      }
+
+      .terminalScroller::-webkit-scrollbar-track {
+        background: transparent;
+      }
+
+      .linePrefix {
+        width: 1ch;
+        flex: 0 0 1ch;
+        color: ${cssManager.bdTheme(colors.dark.blueActive, colors.bright.blueActive)};
         text-align: center;
       }
-    `
+
+      .lineText {
+        flex: 1;
+        min-width: 0;
+        color: ${cssManager.bdTheme('hsl(220 15% 25%)', 'hsl(210 15% 86%)')};
+        white-space: pre-wrap;
+        word-break: break-word;
+      }
+
+      .terminalLine:not(.current) .lineText {
+        color: ${cssManager.bdTheme('hsl(215 12% 42%)', 'hsl(215 12% 63%)')};
+      }
+
+      @keyframes indeterminateSlide {
+        0% {
+          transform: translateX(-120%);
+        }
+
+        100% {
+          transform: translateX(320%);
+        }
+      }
+    `,
   ];
 
+  public async connectedCallback(): Promise<void> {
+    await super.connectedCallback();
+    this.syncSpinnerState();
+  }
+
+  public async disconnectedCallback(): Promise<void> {
+    this.stopSpinner();
+    await super.disconnectedCallback();
+  }
+
+  public updated(changedProperties: Map<string | number | symbol, unknown>): void {
+    super.updated(changedProperties);
+    this.syncSpinnerState();
+
+    if (changedProperties.has('terminalLines') && this.terminalLines.length > 0) {
+      this.scrollTerminalToBottom();
+    }
+  }
+
   public render() {
+    const effectivePercentage = this.getEffectivePercentage();
+    const showHeader = Boolean(this.label) || (this.showPercentage && !this.indeterminate);
+    const hasTerminalLines = this.terminalLines.length > 0;
+    const hasStatusContent = hasTerminalLines || this.statusText.trim().length > 0;
+    const renderedRows = this.getRenderedStatusRows();
+    const spinnerFrame = this.spinnerFrames[this.activeSpinnerFrame] ?? this.spinnerFrames[0];
+
     return html`
       <div class="progressBarContainer">
+        ${showHeader ? html`
+          <div class="progressHeader">
+            <div class="progressLabel">${this.label}</div>
+            ${this.showPercentage && !this.indeterminate ? html`
+              <div class="progressValue">${this.formatPercentage(effectivePercentage)}%</div>
+            ` : ''}
+          </div>
+        ` : ''}
         <div class="progressBar">
-          <div class="progressBarFill"></div>
+          <div
-          <div class="progressText">
+            class="progressBarFill ${this.indeterminate ? 'indeterminate' : ''}"
-            ${this.percentage}%
+            style="${this.indeterminate ? '' : `width: ${effectivePercentage}%;`}"
-          <div>
+          ></div>
         </div>
+        ${hasStatusContent ? html`
+          <div
+            class="statusPanel"
+            style="--status-rows: ${renderedRows};"
+            aria-live="polite"
+            aria-atomic="true"
+          >
+            ${hasTerminalLines ? html`
+              <div class="terminalScroller">
+                ${this.terminalLines.map((line, index) => {
+                  const isCurrentLine = index === this.terminalLines.length - 1;
+                  const prefix = this.indeterminate && isCurrentLine ? spinnerFrame : '>';
+                  return html`
+                    <div class="terminalLine ${isCurrentLine ? 'current' : ''}">
+                      <span class="linePrefix">${prefix}</span>
+                      <span class="lineText">${line}</span>
+                    </div>
+                  `;
+                })}
+              </div>
+            ` : html`
+              <div class="statusTextRow">
+                <span class="linePrefix">${this.indeterminate ? spinnerFrame : '>'}</span>
+                <span class="lineText">${this.statusText}</span>
+              </div>
+            `}
+          </div>
+        ` : ''}
       </div>
-    `
+    `;
   }
 
-  firstUpdated (_changedProperties: Map<string | number | symbol, unknown>): void {
+  private getEffectivePercentage(): number {
-    super.firstUpdated(_changedProperties);
+    if (typeof this.value === 'number' && Number.isFinite(this.value)) {
-    this.updateComplete.then(() => {
+      return this.clampPercentage(this.value);
-      this.updatePercentage();
+    }
+
+    if (typeof this.progress === 'number' && Number.isFinite(this.progress)) {
+      const normalizedProgress = this.progress >= 0 && this.progress <= 1
+        ? this.progress * 100
+        : this.progress;
+      return this.clampPercentage(normalizedProgress);
+    }
+
+    return this.clampPercentage(this.percentage);
+  }
+
+  private getRenderedStatusRows(): number {
+    const rows = Number.isFinite(this.statusRows) ? Math.floor(this.statusRows) : 3;
+    return Math.max(1, rows);
+  }
+
+  private clampPercentage(input: number): number {
+    return Math.max(0, Math.min(100, input));
+  }
+
+  private formatPercentage(input: number): string {
+    return Number.isInteger(input) ? `${input}` : input.toFixed(1).replace(/\.0$/, '');
+  }
+
+  private syncSpinnerState(): void {
+    const shouldAnimate = this.indeterminate && (this.statusText.trim().length > 0 || this.terminalLines.length > 0);
+
+    if (shouldAnimate && this.spinnerIntervalId === null) {
+      this.spinnerIntervalId = window.setInterval(() => {
+        this.activeSpinnerFrame = (this.activeSpinnerFrame + 1) % this.spinnerFrames.length;
+      }, 120);
+      return;
+    }
+
+    if (!shouldAnimate) {
+      this.stopSpinner();
+    }
+  }
+
+  private stopSpinner(): void {
+    if (this.spinnerIntervalId !== null) {
+      window.clearInterval(this.spinnerIntervalId);
+      this.spinnerIntervalId = null;
+    }
+
+    this.activeSpinnerFrame = 0;
+  }
+
+  private scrollTerminalToBottom(): void {
+    const terminalScroller = this.shadowRoot?.querySelector('.terminalScroller') as HTMLElement | null;
+
+    if (!terminalScroller) {
+      return;
+    }
+
+    window.requestAnimationFrame(() => {
+      terminalScroller.scrollTop = terminalScroller.scrollHeight;
     });
   }
-
+}
-  public async updatePercentage() {
-    const progressBarFill = this.shadowRoot!.querySelector('.progressBarFill') as HTMLElement;
-    progressBarFill.style.width = `${this.percentage}%`;
-  }
-
-  updated(){
-    this.updatePercentage();
-  }
-}