feat(transactions): update cuelume; bring back improved volume user setting

frontend/package-lock.json

@@ -25,7 +25,7 @@
         "chart.js": "^4.5.1",
         "chartjs-chart-sankey": "^0.14.3",
         "chartjs-plugin-zoom": "^2.2.0",
-        "cuelume": "^0.1.2",
+        "cuelume": "^0.2.2",
         "daisyui": "5.5.20",
         "htmx.org": "^2.0.10",
         "hyperscript.org": "^0.9.91",
@@ -1319,9 +1319,9 @@
       }
     },
     "node_modules/cuelume": {
-      "version": "0.1.2",
-      "resolved": "https://registry.npmjs.org/cuelume/-/cuelume-0.1.2.tgz",
-      "integrity": "sha512-VxL0k9l1fyKGot3VKM+wm5Xd2K75fVeBHdNTrR1EHiqKRtD6S5Dxy/vY7hwl9gXp3QT/TIywFXUos77n39YZVQ==",
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/cuelume/-/cuelume-0.2.2.tgz",
+      "integrity": "sha512-TiNzJRjhddjC4jy4M7sv63V/86VaFhdIs6iHUCrc4CKhqypaxRBv1aedCBGebrz/cO7nroPkEfqHe/P7fOE2GQ==",
       "license": "MIT"
     },
     "node_modules/daisyui": {

frontend/package.json

@@ -32,7 +32,7 @@
     "chart.js": "^4.5.1",
     "chartjs-chart-sankey": "^0.14.3",
     "chartjs-plugin-zoom": "^2.2.0",
-    "cuelume": "^0.1.2",
+    "cuelume": "^0.2.2",
     "daisyui": "5.5.20",
     "htmx.org": "^2.0.10",
     "hyperscript.org": "^0.9.91",

frontend/src/js/sounds.js

@@ -1,4 +1,11 @@
 import { play } from "cuelume";
 
 
-window.playSound = play;
+// User volume is stored as 0-10 (0 = muted); cuelume expects a 0-1 gain.
+// Loudness is perceived logarithmically, so a linear mapping makes adjacent
+// steps sound nearly identical. Squaring spreads them out (10 → 0dB, 5 → -12dB, 1 → -40dB).
+// Pass `volume` to override the user's saved volume (e.g. to preview a new value).
+window.playSound = (name, volume) => {
+  volume ??= JSON.parse(document.getElementById("volume")?.textContent ?? "10");
+  play(name, { volume: (volume / 10) ** 2 });
+};