Add Technical Kiwi website with Go, templ, and HTMX.

Single-page site with gallery by album and event, contact form over SMTP,
Docker dev/prod setup, and on-server image derivatives. Gallery photos stay
local (app/images/ is gitignored).

Co-authored-by: Cursor <cursoragent@cursor.com>

app/templates/home.templ

@@ -0,0 +1,153 @@
+package templates
+
+import (
+	"fmt"
+	"technical.kiwi/website/internal/gallery"
+)
+
+templ Home(images []gallery.Image, hero gallery.Image, hasHero bool, contactEnabled bool) {
+	@Layout("Technical Kiwi Limited", heroPreload(hero, hasHero), homeContent(images, hero, hasHero, contactEnabled))
+}
+
+func heroPreload(hero gallery.Image, hasHero bool) string {
+	if !hasHero {
+		return ""
+	}
+	return hero.HeroURL
+}
+
+templ homeContent(images []gallery.Image, hero gallery.Image, hasHero bool, contactEnabled bool) {
+	<section class="hero">
+		<div class="hero-copy">
+			<p class="eyebrow">Technical Kiwi Limited</p>
+			<h1>Electronic engineering, DevOps, and interactive art</h1>
+			<p class="lead">
+				We design and build lighting installations, embedded systems, and the infrastructure
+				that keeps creative technology running — from workshop bench to stage.
+			</p>
+			<div class="hero-actions">
+				<a href="#gallery" class="btn btn-primary">View our work</a>
+				<a href="#contact" class="btn btn-ghost">Get in touch</a>
+			</div>
+		</div>
+		if hasHero && hero.HeroURL != "" {
+			<figure class="hero-visual">
+				<img
+					src={ hero.HeroURL }
+					alt="Technical Kiwi — Connection machine"
+					loading="eager"
+					decoding="sync"
+					fetchpriority="high"
+				/>
+			</figure>
+		}
+	</section>
+	<section id="services" class="services">
+		<h2>What we do</h2>
+		<div class="service-grid">
+			<article class="service-card">
+				<h3>Electronic engineering</h3>
+				<p>Custom LED systems, control electronics, PCB design, and fabrication for installations and products.</p>
+			</article>
+			<article class="service-card">
+				<h3>DevOps &amp; infrastructure</h3>
+				<p>Servers, CI/CD, monitoring, and reliable deployments — so your systems stay up when the show goes live.</p>
+			</article>
+			<article class="service-card">
+				<h3>Interactive art</h3>
+				<p>Lighting, sound-reactive visuals, and experiential tech for events, venues, and public spaces.</p>
+			</article>
+		</div>
+	</section>
+	<section id="code" class="code-section">
+		<div class="section-head">
+			<h2>Code</h2>
+			<p>
+				All repositories on
+				<a href="https://git.technical.kiwi/" rel="noopener noreferrer" target="_blank">git.technical.kiwi</a>
+				are written and maintained by Technical Kiwi — firmware, lighting control, web services,
+				and the infrastructure behind them.
+			</p>
+		</div>
+		<a
+			href="https://git.technical.kiwi/"
+			class="code-card"
+			rel="noopener noreferrer"
+			target="_blank"
+		>
+			<div class="code-card-copy">
+				<h3>git.technical.kiwi</h3>
+				<p>
+					Source for installations, internal tools, and open components we ship or deploy
+					{ "for" } clients. Browse projects, history, and releases in one place.
+				</p>
+			</div>
+			<span class="btn btn-primary">Browse repositories</span>
+		</a>
+	</section>
+	<section id="gallery" class="gallery-section">
+		<div class="section-head">
+			<h2>Gallery</h2>
+			<p>Installations, prototypes, and behind-the-scenes work.</p>
+		</div>
+		@GalleryControls(images)
+		@GalleryCollectionControls(images)
+		<div id="gallery-grid" class="gallery-grid">
+			@GalleryGrid(images)
+		</div>
+	</section>
+	@ContactForm(contactEnabled)
+}
+
+templ GalleryControls(images []gallery.Image) {
+	<div class="gallery-controls">
+		<button
+			type="button"
+			class="filter-btn active"
+			hx-get="/gallery"
+			hx-target="#gallery-grid"
+			hx-swap="innerHTML"
+		>
+			All
+		</button>
+		for _, album := range gallery.Albums(images) {
+			<button
+				type="button"
+				class="filter-btn"
+				hx-get={ fmt.Sprintf("/gallery?album=%s", album) }
+				hx-target="#gallery-grid"
+				hx-swap="innerHTML"
+			>
+				{ gallery.AlbumLabel(album) }
+			</button>
+		}
+	</div>
+}
+
+templ GalleryCollectionControls(images []gallery.Image) {
+	if len(gallery.Collections(images, "templeoftechno")) > 0 {
+		<div class="gallery-controls gallery-controls-collections">
+			<span class="gallery-controls-label">Temple of techno</span>
+			<button
+				type="button"
+				class="filter-btn"
+				hx-get="/gallery?album=templeoftechno"
+				hx-target="#gallery-grid"
+				hx-swap="innerHTML"
+			>
+				All events
+			</button>
+			for _, key := range gallery.Collections(images, "templeoftechno") {
+				<button
+					type="button"
+					class="filter-btn"
+					hx-get={ fmt.Sprintf("/gallery?album=templeoftechno&collection=%s", key) }
+					hx-target="#gallery-grid"
+					hx-swap="innerHTML"
+				>
+					{ gallery.CollectionLabel(key, images) }
+				</button>
+			}
+		</div>
+	}
+}