fix: mx divider renders much larger, fills the terminal (3.6.1)

apps/cli/src/divider.ts

@@ -19,15 +19,21 @@ const SHOW_CURSOR = '\x1b[?25h';
  * @param text - The label to display.
  */
 export function runDivider(text: string): void {
+  // Terminal size, falling back to COLUMNS/LINES env then a default — the env
+  // fallback lets a non-TTY (piped) run render at an explicit size for preview.
+  const dims = (): [number, number] => [
+    process.stdout.columns || Number(process.env.COLUMNS) || 80,
+    process.stdout.rows || Number(process.env.LINES) || 24,
+  ];
   const paint = (): void => {
-    const cols = process.stdout.columns || 80;
-    const rows = process.stdout.rows || 24;
+    const [cols, rows] = dims();
     process.stdout.write(CLEAR + renderBanner(text, cols, rows));
   };
 
   // Non-interactive (piped) stdout: emit once and return, no hold.
   if (!process.stdout.isTTY) {
-    process.stdout.write(renderBanner(text, process.stdout.columns || 80, process.stdout.rows || 24) + '\n');
+    const [cols, rows] = dims();
+    process.stdout.write(renderBanner(text, cols, rows) + '\n');
     return;
   }
 

docs/history.md

@@ -2,6 +2,10 @@
 
 What each release brought. Reverse-chronological. Dates reflect when the corresponding tag was pushed.
 
+## 3.6.1 — 2026-07-09
+
+**`mx divider` renders much larger.** The banner now scales to fill the terminal (chunky letters at the largest cell size the width allows, height grown to match) instead of strict proportional scaling, which left a long label like `IN REVIEWS` tiny on a fullscreen window (7 rows). Also honors `COLUMNS`/`LINES` env vars as a size fallback for non-TTY (piped) output, so you can preview a size without going fullscreen. Renderer-only change in `@mx/core` (`renderBanner`) plus the CLI size fallback.
+
 ## 3.6.0 — 2026-07-08
 
 **`mx divider <text> [-o]`** — fill a terminal with `<text>` as large block letters, a visual separator for macOS Mission Control Spaces (e.g. an `IN REVIEWS` / `PR REVIEWS` window between clusters of work windows). Bare, it takes over the current terminal, draws the banner, and holds it (Ctrl-C or `q` to quit); `-o` opens a new fullscreen Terminal running the same banner (macOS). The text auto-scales to fill the terminal and re-renders on resize.

npm/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@roulabs/mx",
-  "version": "3.6.0",
+  "version": "3.6.1",
   "description": "mx — run several features in parallel across shared repos using git worktrees",
   "type": "module",
   "bin": {

packages/core/src/banner.ts

@@ -102,16 +102,18 @@ export function renderBanner(text: string, cols: number, rows: number): string {
     baseRows.push(glyphs.map((g) => g[r]).join(' '));
   }
 
-  // Pick a scale that fits both dimensions. A character cell is about twice as
-  // tall as wide, so we aim for xscale ≈ 2·yscale to keep letters looking
-  // square, but never exceed the width/height budget (each axis is clamped
-  // independently, so long text scales down instead of overflowing).
+  // Scale up to fill the terminal. Width is the usual constraint (a long label
+  // caps how wide each cell can be), so take the largest cell width that fits
+  // and then grow the height to match — capped at the same factor so letters
+  // stay chunky (roughly square in cell counts) rather than proportional-but-
+  // tiny. This fills far more of a large fullscreen window than strict
+  // proportional scaling, which is what makes the banner readable at a glance.
   const marginH = 2;
   const marginV = 2;
   const xMax = Math.floor((cols - marginH) / Math.max(1, baseW));
   const yMax = Math.floor((rows - marginV) / GLYPH_H);
-  const yscale = Math.max(1, Math.min(yMax, Math.floor(xMax / 2)));
-  const xscale = Math.max(1, Math.min(xMax, yscale * 2));
+  const xscale = Math.max(1, xMax);
+  const yscale = Math.max(1, Math.min(yMax, xscale));
 
   // Scale each base row up (horizontally by xscale, vertically by yscale).
   const scaled: string[] = [];