ditch typhon in favor of doing it raw

scripts/common.js

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+
+export const MODULE_ID = "rush-character-archive-foundry-module";
+
+export const URI_SETTING_NAME = "uri_setting";

scripts/index.js

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+import { initializeSettings } from "./settings.js";
+
+Hooks.on('init', async function () { 
+	initializeSettings();
+});
+
+Hooks.on("getActorSheetHeaderButtons", (app, buttons) => {
+	let theatreButtons = [];
+
+	theatreButtons.push({
+		label: "Archive",
+		class: "send-to-archive",
+		icon: "fas fa-mask",
+		onclick: (ev) => {
+			console.log("ARCHIVE ME!");
+		}
+	});
+
+    buttons.unshift(...theatreButtons);
+});

scripts/settings.js

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+import {MODULE_ID, URI_SETTING_NAME} from "./common.js"
+
+export function initializeSettings() {
+	game.settings.register(MODULE_ID, URI_SETTING_NAME, {
+		name: "Archive Server URI",
+		hint: "Address of the character archive server.",
+		scope: "world",
+		config: true,
+		default: "https://chararchive.cyberpunkrush.com",
+		type: String,
+	});
+}