diff --git a/web/js/pqueue.ui.workflow.js b/web/js/pqueue.ui.workflow.js
new file mode 100644
index 0000000..4f41130
--- /dev/null
+++ b/web/js/pqueue.ui.workflow.js
@@ -0,0 +1,61 @@
+(function () {
+    "use strict";
+
+    const UI = (window.PQueue && window.PQueue.UI) || window.UI;
+    const copyText = (window.PQueue && window.PQueue.copyText) || window.copyText;
+
+    UI.ensureWorkflowModal = function ensureWorkflowModal() {
+        if (UI.workflowOverlay) return;
+        const overlay = UI.el("div", { class: "pqueue-modal" });
+        const dialog = UI.el("div", { class: "pqueue-modal__dialog" });
+        const header = UI.el("header", { class: "pqueue-modal__header" });
+        const title = UI.el("h3", { class: "pqueue-modal__title" });
+        const subtitle = UI.el("div", { class: "pqueue-modal__subtitle" });
+        const copyBtn = UI.button({ icon: "ti ti-copy", text: "Copy JSON", variant: "ghost", subtle: true });
+        copyBtn.dataset.action = "workflow-copy";
+        const closeBtn = UI.button({ icon: "ti ti-x", variant: "ghost", subtle: true, title: "Close" });
+        closeBtn.addEventListener("click", UI.closeWorkflowModal);
+        header.appendChild(title);
+        header.appendChild(subtitle);
+        header.appendChild(UI.el("div", { class: "pqueue-modal__actions" }, [copyBtn, closeBtn]));
+        const body = UI.el("div", { class: "pqueue-modal__body" });
+        const code = UI.el("pre", { class: "pqueue-modal__code" });
+        body.appendChild(code);
+        dialog.appendChild(header);
+        dialog.appendChild(body);
+        overlay.appendChild(dialog);
+        overlay.addEventListener("click", (e) => {
+            if (e.target === overlay) UI.closeWorkflowModal();
+        });
+        document.body.appendChild(overlay);
+        UI.workflowOverlay = overlay;
+        UI.workflowDialog = dialog;
+        UI.workflowTitle = title;
+        UI.workflowSubtitle = subtitle;
+        UI.workflowCode = code;
+        UI.workflowCopyBtn = copyBtn;
+        UI.workflowCopyBtn.addEventListener("click", () => {
+            if (UI.workflowCode?.textContent) copyText(UI.workflowCode.textContent);
+        });
+        UI.workflowKeyHandler = (e) => {
+            if (e.key === "Escape") UI.closeWorkflowModal();
+        };
+        document.addEventListener("keydown", UI.workflowKeyHandler);
+    };
+
+    UI.openWorkflowModal = function openWorkflowModal({ promptId, workflowText, sourceLabel }) {
+        UI.ensureWorkflowModal();
+        UI.workflowOverlay.style.display = "flex";
+        UI.workflowTitle.textContent = `Workflow for ${promptId}`;
+        UI.workflowSubtitle.textContent = sourceLabel ? `Source: ${sourceLabel}` : "";
+        UI.workflowCode.textContent = workflowText;
+    };
+
+    UI.closeWorkflowModal = function closeWorkflowModal() {
+        if (UI.workflowOverlay) UI.workflowOverlay.style.display = "none";
+    };
+})();
+
+
+
+