Redesign UI with onboarding walkthrough and query presets

src/components/Walkthrough.tsx

@@ -0,0 +1,87 @@
+import { useState } from 'react';
+
+export const WALK_STORAGE_KEY = 'nem-walk-seen';
+
+interface WalkthroughProps {
+  onClose: () => void;
+}
+
+const steps = [
+  {
+    label: 'Step 01 / 03',
+    title: 'Point it at a relay',
+    render: () => (
+      <>
+        Nostr is a network of relays — public servers that hold events. Add at least one{' '}
+        <code>wss://</code> URL to query. You can add several and this tool will query them in parallel.
+      </>
+    ),
+  },
+  {
+    label: 'Step 02 / 03',
+    title: 'Filter by Kind or NIP',
+    render: () => (
+      <>
+        Each event has a numeric <code>kind</code>. If you know it, use <strong>Kind</strong>. If not,
+        search by <strong>NIP</strong> — the spec number — and we'll resolve its kinds automatically.
+        Then narrow with author, tags, or time range.
+      </>
+    ),
+  },
+  {
+    label: 'Step 03 / 03',
+    title: 'Search vs Stream',
+    render: () => (
+      <>
+        <strong>Search</strong> fetches a snapshot (past events, bounded by <code>limit</code>).{' '}
+        <strong>Stream</strong> keeps a live socket open and prints new events as they land.
+        Use Stream to debug relays or watch a kind in real time.
+      </>
+    ),
+  },
+];
+
+export function Walkthrough({ onClose }: WalkthroughProps) {
+  const [step, setStep] = useState(0);
+  const s = steps[step];
+  const isLast = step === steps.length - 1;
+
+  return (
+    <div
+      className="walk-overlay"
+      onClick={onClose}
+      role="dialog"
+      aria-modal="true"
+      aria-labelledby="walk-title"
+    >
+      <div className="walk-card" onClick={(e) => e.stopPropagation()}>
+        <div className="walk-step">{s.label}</div>
+        <h2 id="walk-title" className="walk-title">{s.title}</h2>
+        <p className="walk-desc">{s.render()}</p>
+        <div className="walk-nav">
+          <div className="walk-dots">
+            {steps.map((_, i) => (
+              <span key={i} className={`walk-dot ${i <= step ? 'on' : ''}`} />
+            ))}
+          </div>
+          <div style={{ display: 'flex', gap: '8px' }}>
+            <button
+              type="button"
+              onClick={onClose}
+              className="h-8 px-3 text-xs bg-accent/10 border border-accent/30 hover:bg-accent/20 rounded"
+            >
+              Skip
+            </button>
+            <button
+              type="button"
+              onClick={() => (isLast ? onClose() : setStep(step + 1))}
+              className="h-8 px-4 text-xs bg-accent/80 hover:bg-accent border-accent/50 rounded"
+            >
+              {isLast ? 'Start monitoring' : 'Next'}
+            </button>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}

src/data/presets.ts

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+export const SUGGESTED_RELAYS: string[] = [
+  'relay.damus.io',
+  'relay.primal.net',
+  'nos.lol',
+  'relay.nostr.band',
+  'relay.mostro.network',
+];
+
+export interface QueryPreset {
+  id: string;
+  title: string;
+  desc: string;
+  kind: string;
+}
+
+export const PRESETS: QueryPreset[] = [
+  { id: 'notes', title: 'Recent notes', desc: 'kind:1 · short text notes', kind: '1' },
+  { id: 'mostro', title: 'Mostro P2P orders', desc: 'kind:38383 · NIP-69', kind: '38383' },
+  { id: 'zaps', title: 'Zap receipts', desc: 'kind:9735 · NIP-57', kind: '9735' },
+  { id: 'profiles', title: 'User metadata', desc: 'kind:0 · profile updates', kind: '0' },
+];