chore(release): v0.10.0 (#400)

Photo Essay mode, client proofing, studio-modern preset, admin panel overhaul, watermark, cookieless analytics, subpage toggle, SEO title templates. Analytics API now admin-only, Trivy scan on publish. Album order mirrors the Immich timeline; map theme, admin status panel, lightbox counter and Docker health check fixed.

See CHANGELOG.md for the full list and the health-check upgrade note.

app/tokens.css

@@ -54,6 +54,55 @@
   --accent-dim: rgba(200, 0, 15, 0.08);
 }
 
+/* ── Studio Modern: Leica Precision Palette ──────── */
+[data-preset='studio-modern'] {
+  --bg-primary: #121212;
+  --bg-secondary: #0d0d0d;
+  --bg-card: #191919;
+  --bg-card-hover: #202020;
+  --bg-overlay: rgba(10, 10, 10, 0.92);
+
+  --text-primary: #f4f4f2;
+  --text-secondary: #9c9c96;
+  --text-muted: #6b6b66;
+
+  --border-subtle: rgba(255, 255, 255, 0.08);
+  --border-hover: rgba(255, 255, 255, 0.2);
+
+  --radius-sm: 0px;
+  --radius-md: 0px;
+  --radius-lg: 0px;
+
+  --max-width: 1440px;
+  --header-height: 64px;
+
+  /* Signal red. Light mode darkens whatever accent is configured so it
+     still carries on a near-white background (#e60012 -> ~#c4000f). */
+  --sm-accent: var(--accent);
+
+  /* Gutter + hairline, reused across app/themes/studio-modern.css */
+  --sm-gutter: 48px;
+  --sm-hairline: 1px solid var(--border-subtle);
+  --sm-chip-bg: rgba(0, 0, 0, 0.75);
+}
+
+[data-preset='studio-modern'][data-theme='light'] {
+  --sm-accent: color-mix(in srgb, var(--accent) 86%, #000);
+
+  --bg-primary: #fafaf8;
+  --bg-secondary: #f0f0ec;
+  --bg-card: #ffffff;
+  --bg-card-hover: #f5f5f1;
+  --bg-overlay: rgba(250, 250, 248, 0.96);
+
+  --text-primary: #161614;
+  --text-secondary: #5a5a55;
+  --text-muted: #8a8a84;
+
+  --border-subtle: rgba(0, 0, 0, 0.09);
+  --border-hover: rgba(0, 0, 0, 0.25);
+}
+
 /* ── Minimal: Swiss Brutalist Palette ────────────── */
 [data-preset='minimal'] {
   --bg-primary: #000000;