fix(status): full-width tables + better diagnosis

src/terminal/table.test.ts

@@ -1,5 +1,6 @@
 import { describe, expect, it } from "vitest";
 
+import { visibleWidth } from "./ansi.js";
 import { renderTable } from "./table.js";
 
 describe("renderTable", () => {
@@ -16,4 +17,19 @@ describe("renderTable", () => {
     expect(out).toContain("Dashboard");
     expect(out).toMatch(/│ Dashboard\s+│/);
   });
+
+  it("expands flex columns to fill available width", () => {
+    const width = 60;
+    const out = renderTable({
+      width,
+      columns: [
+        { key: "Item", header: "Item", minWidth: 10 },
+        { key: "Value", header: "Value", flex: true, minWidth: 24 },
+      ],
+      rows: [{ Item: "OS", Value: "macos 26.2 (arm64)" }],
+    });
+
+    const firstLine = out.trimEnd().split("\n")[0] ?? "";
+    expect(visibleWidth(firstLine)).toBe(width);
+  });
 });