Top: a graph's past holds still — columns draw the peak of their own fixed slice of history

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

web/package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "dev": "vite",
     "build": "tsc --noEmit && vite build",
-    "icons": "node scripts/icons.mjs"
+    "icons": "node scripts/icons.mjs",
+    "test": "node scripts/test-graphcols.mjs"
   },
   "dependencies": {
     "@xterm/addon-fit": "^0.10.0",