Replace static Hello World with KenJim Technologies React app

- Vite + React frontend: hero, services grid, contact form
- Express + nodemailer backend for contact form → kenji@kenjim.com
- Multi-stage Docker builds; nginx inside frontend proxies /api to backend
- SMTP config via .env (see .env.example)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/components/Hero.module.css

@@ -0,0 +1,58 @@
+.hero {
+  min-height: 90vh;
+  display: flex;
+  align-items: center;
+  padding: 6rem 1.5rem;
+  background:
+    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(56,189,248,0.12) 0%, transparent 70%),
+    var(--bg);
+}
+
+.inner { max-width: 720px; }
+
+.headline {
+  font-size: clamp(2.2rem, 5vw, 3.5rem);
+  font-weight: 800;
+  line-height: 1.15;
+  margin-bottom: 1.5rem;
+}
+
+.accent { color: var(--accent); }
+
+.sub {
+  color: var(--text-muted);
+  font-size: 1.15rem;
+  line-height: 1.7;
+  margin-bottom: 2.5rem;
+  max-width: 600px;
+}
+
+.actions {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 1rem;
+}
+
+.btnPrimary, .btnSecondary {
+  padding: 0.75rem 1.75rem;
+  border-radius: 0.5rem;
+  font-weight: 600;
+  font-size: 1rem;
+  text-decoration: none;
+  transition: opacity 0.2s;
+}
+
+.btnPrimary {
+  background: var(--accent);
+  color: #080d1a;
+}
+
+.btnPrimary:hover { opacity: 0.88; text-decoration: none; }
+
+.btnSecondary {
+  border: 1px solid var(--border);
+  color: var(--text);
+  background: transparent;
+}
+
+.btnSecondary:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }