fix(database): respect Workers PBKDF2 iteration limit

worker/db-admin.js

@@ -7,7 +7,8 @@ const TABLES = {
 };
 const META = new Set(["profile", "settings", "system"]);
 const DURATION = 20 * 60 * 1000;
-const ITERATIONS = 210_000;
+// The deployed Workers runtime rejects PBKDF2 counts above 100,000.
+const ITERATIONS = 100_000;
 const body = (value, status = 200) => Response.json(value, { status, headers: { "cache-control": "no-store" } });
 const validId = value => typeof value === "string" && value.length > 0 && value.length <= 200;
 const hash = async value => [...new Uint8Array(await crypto.subtle.digest("SHA-256", new TextEncoder().encode(value)))].map(byte => byte.toString(16).padStart(2, "0")).join("");