Forge success label and real progress bar tied to server compile stages.

Replace Dispensed with Forged in the reveal modal, poll builder/progress with indeterminate-until-first-byte UX, and emit interpolated compile progress during long garble builds.

server/web/src/hooks/useForgeProgressPoll.ts

@@ -0,0 +1,57 @@
+import { useEffect, useRef } from 'react';
+import { useForge } from '../context/ForgeContext';
+
+const FORGE_POLL_MS = 1000;
+
+/** Poll GET /api/v1/builder/progress/{token} while a forge is running. */
+export function useForgeProgressPoll(
+  active: boolean,
+  cancelTokenRef: React.RefObject<string>,
+) {
+  const { startForge, endForge, setStage } = useForge();
+  const timerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
+
+  useEffect(() => {
+    if (!active) {
+      endForge();
+      if (timerRef.current) clearTimeout(timerRef.current);
+      return;
+    }
+    startForge();
+
+    const token = cancelTokenRef.current;
+    if (!token) return;
+
+    let alive = true;
+
+    const poll = async () => {
+      if (!alive) return;
+      try {
+        const { authHeaders } = await import('../api/auth');
+        const res = await fetch(`/api/v1/builder/progress/${encodeURIComponent(token)}`, {
+          headers: authHeaders(),
+        });
+        if (res.ok) {
+          const data: { stage?: string; pct?: number } = await res.json();
+          const pct = typeof data.pct === 'number' ? data.pct : 0;
+          if (alive && (data.stage || pct > 0)) {
+            setStage(data.stage || 'Forging...', pct);
+          }
+        }
+      } catch {
+        // network hiccup — keep polling
+      }
+      if (alive) {
+        timerRef.current = setTimeout(poll, FORGE_POLL_MS);
+      }
+    };
+
+    poll();
+
+    return () => {
+      alive = false;
+      if (timerRef.current) clearTimeout(timerRef.current);
+    };
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [active]);
+}