FN-8480: remove redundant board header descriptions

Remove redundant readiness descriptions from Todo and In Review board headers.

- Make column descriptions optional and omit Todo/In Review entries
- Render description markup only when a description is present
- Cover empty and populated header states and add a patch changeset

Files changed:
 .../fn-8480-remove-column-header-descriptions.md   |  7 +++++
 packages/core/src/types.ts                         |  9 ++++--
 packages/dashboard/app/components/Column.tsx       |  2 +-
 .../app/components/__tests__/Column.test.tsx       | 35 ++++++++++++++++++++++
 4 files changed, 49 insertions(+), 4 deletions(-)

Fusion-Task-Id: FN-8480

Fusion-Task-Lineage: e14bcf8c-1a44-4de3-9cfe-833bf8bb697e

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>

.changeset/fn-8480-remove-column-header-descriptions.md

@@ -0,0 +1,7 @@
+---
+"@runfusion/fusion": patch
+---
+
+summary: Remove redundant readiness descriptions from Todo and In Review board headers.
+category: fix
+dev: Todo and In Review omit legacy COLUMN_DESCRIPTIONS entries so no empty description shell renders.

packages/core/src/types.ts

@@ -4428,11 +4428,14 @@ export const COLUMN_LABELS: Record<Column, string> = {
   archived: "Archived",
 };
 
-export const COLUMN_DESCRIPTIONS: Record<Column, string> = {
+/*
+FNXC:BoardColumnDescriptions 2026-07-21-00:00:
+Todo and In Review must not carry redundant status prose in board headers.
+Their omitted entries intentionally suppress the description element.
+*/
+export const COLUMN_DESCRIPTIONS: Partial<Record<Column, string>> = {
   triage: "Raw ideas — AI will plan these",
-  todo: "Specified and ready to start",
   "in-progress": "AI is working on this in a worktree",
-  "in-review": "Complete — ready to merge",
   done: "Merged and closed",
   archived: "Completed and archived",
 };

packages/dashboard/app/components/Column.tsx

@@ -835,7 +835,7 @@ function ColumnComponent({ column, tasks, projectId, maxConcurrent, showWorktree
           </div>
         )}
       </div>
-      {!isCollapsed && (workflowMode ? COLUMN_DESCRIPTIONS[column] !== undefined : true) && (
+      {!isCollapsed && COLUMN_DESCRIPTIONS[column] !== undefined && (
         <p className="column-desc">{COLUMN_DESCRIPTIONS[column]}</p>
       )}
       {!isCollapsed && inlineFeedback && (

packages/dashboard/app/components/__tests__/Column.test.tsx

@@ -214,6 +214,41 @@ describe("Column Coding (Ideas) header indicator", () => {
   });
 });
 
+/*
+FNXC:BoardColumnDescriptions 2026-07-21-00:00:
+Todo and In Review omit redundant readiness prose, and the shared Column renderer
+must leave no empty description shell across desktop/mobile and task-data states.
+*/
+describe("Column legacy descriptions", () => {
+  it.each([
+    ["Todo", "todo" as ColumnType, "Specified and ready to start"],
+    ["In Review", "in-review" as ColumnType, "Complete — ready to merge"],
+  ])("omits the description shell for an empty %s column", (label, column, removedDescription) => {
+    render(<Column {...defaultProps} column={column} tasks={[]} />);
+
+    expect(screen.getByRole("heading", { name: label, level: 2 })).toBeInTheDocument();
+    expect(screen.queryByText(removedDescription)).not.toBeInTheDocument();
+    expect(document.querySelector(".column-desc")).toBeNull();
+  });
+
+  it.each([
+    ["Todo", "todo" as ColumnType, "Specified and ready to start"],
+    ["In Review", "in-review" as ColumnType, "Complete — ready to merge"],
+  ])("omits the description shell for a populated %s column", (label, column, removedDescription) => {
+    render(<Column {...defaultProps} column={column} tasks={[{ ...makeTask("FN-8480"), column }]} />);
+
+    expect(screen.getByRole("heading", { name: label, level: 2 })).toBeInTheDocument();
+    expect(screen.queryByText(removedDescription)).not.toBeInTheDocument();
+    expect(document.querySelector(".column-desc")).toBeNull();
+  });
+
+  it("retains the description for Planning", () => {
+    render(<Column {...defaultProps} tasks={[]} />);
+
+    expect(screen.getByText("Raw ideas — AI will plan these")).toHaveClass("column-desc");
+  });
+});
+
 describe("Column workflow mode (U9)", () => {
   it("uses the workflow column display name instead of the legacy label", () => {
     render(