Use styled modal dialogs for confirmations

static/css/components.css

@@ -489,9 +489,9 @@
   display: flex;
   align-items: center;
   justify-content: center;
-  background: rgba(0, 0, 0, 0.72);
-  backdrop-filter: blur(6px);
-  -webkit-backdrop-filter: blur(6px);
+  background: color-mix(in srgb, var(--bg-void) 44%, transparent);
+  backdrop-filter: blur(2px);
+  -webkit-backdrop-filter: blur(2px);
 }
 
 .auth-card {
@@ -559,6 +559,27 @@
   margin: 0;
 }
 
+.confirm-card {
+  max-width: 420px;
+}
+
+.confirm-card__icon--danger {
+  color: var(--red);
+  background: color-mix(in srgb, var(--red) 12%, transparent);
+  border-color: color-mix(in srgb, var(--red) 30%, transparent);
+}
+
+.confirm-card__actions {
+  width: 100%;
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: var(--space-3);
+}
+
+.confirm-card__actions .btn {
+  width: 100%;
+}
+
 /* ── Quick shortcuts ─────────────────────────────────────────────────────── */
 
 .shortcuts-container {

static/js/app.js

@@ -27,6 +27,64 @@ export function toast(message, type = 'info') {
   }, 3000);
 }
 
+export function confirmDialog({
+  title,
+  message,
+  confirmText = 'Confirm',
+  cancelText = 'Cancel',
+  confirmClass = 'btn--danger',
+}) {
+  document.getElementById('confirm-modal')?.remove();
+
+  return new Promise((resolve) => {
+    const overlay = document.createElement('div');
+    overlay.id = 'confirm-modal';
+    overlay.className = 'auth-overlay';
+    overlay.tabIndex = -1;
+    overlay.innerHTML = `
+      <div class="auth-card confirm-card fade-in" role="dialog" aria-modal="true" aria-labelledby="confirm-title">
+        <div class="auth-card__icon confirm-card__icon confirm-card__icon--danger">
+          <svg width="32" height="32" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
+            <path d="M12 9v4"/>
+            <path d="M12 17h.01"/>
+            <path d="M10.29 3.86 1.82 18a2 2 0 0 0 1.71 3h16.94a2 2 0 0 0 1.71-3L13.71 3.86a2 2 0 0 0-3.42 0z"/>
+          </svg>
+        </div>
+        <h2 id="confirm-title" class="auth-card__title">${title}</h2>
+        <p class="auth-card__desc">${message}</p>
+        <div class="confirm-card__actions">
+          <button type="button" class="btn btn--ghost" data-action="cancel">${cancelText}</button>
+          <button type="button" class="btn ${confirmClass}" data-action="confirm">${confirmText}</button>
+        </div>
+      </div>
+    `;
+
+    document.body.appendChild(overlay);
+
+    const cancelBtn = overlay.querySelector('[data-action="cancel"]');
+    const confirmBtn = overlay.querySelector('[data-action="confirm"]');
+
+    const close = (result) => {
+      overlay.remove();
+      resolve(result);
+    };
+
+    overlay.addEventListener('click', (e) => {
+      if (e.target === overlay) close(false);
+    });
+
+    cancelBtn.addEventListener('click', () => close(false));
+    confirmBtn.addEventListener('click', () => close(true));
+
+    overlay.addEventListener('keydown', (e) => {
+      if (e.key === 'Escape') close(false);
+    });
+
+    overlay.focus();
+    confirmBtn.focus();
+  });
+}
+
 // ── Token auth modal ──────────────────────────────────────────────────────
 
 function showTokenModal(onSuccess) {

static/js/instructions.js

@@ -6,7 +6,7 @@
 
 import { state } from './state.js';
 import { api } from './api.js';
-import { toast } from './app.js';
+import { confirmDialog, toast } from './app.js';
 
 // ── SVG icon helpers ──────────────────────────────────────────────────────
 
@@ -137,7 +137,14 @@ function renderPendingCard(item, index) {
   });
 
   deleteBtn.addEventListener('click', async () => {
-    if (!confirm('Delete this instruction?')) return;
+    const confirmed = await confirmDialog({
+      title: 'Delete instruction?',
+      message: 'This removes the pending instruction from the queue before any agent can consume it.',
+      confirmText: 'Delete Instruction',
+      cancelText: 'Keep Instruction',
+    });
+    if (!confirmed) return;
+
     deleteBtn.disabled = true;
     try {
       await api.deleteInstruction(item.id);
@@ -215,7 +222,14 @@ export function initInstructions() {
 
   // Clear history button
   clearHistoryBtn.addEventListener('click', async () => {
-    if (!confirm('Clear all consumed instruction history? This cannot be undone.')) return;
+    const confirmed = await confirmDialog({
+      title: 'Clear consumed history?',
+      message: 'This removes all consumed instructions from the history panel. This action cannot be undone.',
+      confirmText: 'Clear History',
+      cancelText: 'Keep History',
+    });
+    if (!confirmed) return;
+
     clearHistoryBtn.disabled = true;
     try {
       const res = await api.clearConsumed();