Import AITURK IDE 1.0.0-beta.1 from Hermes 63279301; preserve MIT license

apps/shared/src/data-url-read-max.ts

@@ -0,0 +1,27 @@
+/**
+ * Size cap for local files Desktop loads as data URLs (composer attach, image
+ * preview, …).
+ *
+ * Main owns the persisted value; the renderer mirrors it in Settings → Chat and
+ * clamps optimistically before sending. Both ends have to agree on the default
+ * and the bounds, so they live here rather than as two constants with a
+ * "keep these in sync" comment between them.
+ *
+ * The whole file is base64-buffered in main, so this is a memory guard, not a
+ * model limit. The ceiling is only a typo guard — values well below it can
+ * still OOM the app.
+ */
+
+export const DATA_URL_READ_DEFAULT_MAX_MB = 16
+export const DATA_URL_READ_MIN_MAX_MB = 1
+export const DATA_URL_READ_MAX_MAX_MB = 4096
+
+export function clampDataUrlReadMaxMb(value: unknown): number {
+  const parsed = Number(value)
+
+  if (!Number.isFinite(parsed)) {
+    return DATA_URL_READ_DEFAULT_MAX_MB
+  }
+
+  return Math.min(DATA_URL_READ_MAX_MAX_MB, Math.max(DATA_URL_READ_MIN_MAX_MB, Math.round(parsed)))
+}