security: add Trivy container scan to Docker publish workflow (#399)

* feat(admin): add backup manager UI with 1-click restore

* feat(admin): collapse older backup entries by default

* fix(theme): isolate admin layout, instant DOM theme updates, and add Light/Dark mode toggle

* feat(admin): replace text controls for Photo Frame and Hero Style with visual preview cards

* fix(admin): define missing CSS rules for button system (.btn, .preset-btn)

* feat(admin): redesign theme settings with segmented mode toggle, accent color swatches, and custom iOS-style toggle cards

* feat(admin): upgrade all settings tabs with visual grid previews, Google SEO snippet preview, and toggle cards

* feat(admin): overhaul Pages Builder UX with slide-over drawer, card hover badges, real-time search, and floating save bar

* fix(admin): remove leftover dangling syntax snippet in PageBuilder.tsx

* fix(admin): add position: relative to subpage-tile so hover overlay is contained inside the tile

* style(admin): replace all emojis with clean Leica-style vector SVG icons

* fix(types): extend IconProps with SVGProps to allow style prop on Leica SVG icons

* feat(admin): add subpage live-preview, privacy analytics, and asset protection settings

* fix(typecheck): fix AlbumEntry property access in subpage drawer preview mode

* fix(types): fix ImmichAlbumInfo property names thumbnailAssetId and albumName in PageBuilder.tsx

* fix(types): add protection and watermark optional properties to AppConfig interface

* feat(settings): add toggle for disabling analytics tracking (defaults to enabled)

* feat(ux): show status banner when analytics tracking is disabled + add live sync indicator

* feat(watermark): render customizable watermark overlay on Lightbox images + rename section to Portfolio Features & Modules

* fix(types): import type LightboxWatermark in PhotoGrid.tsx

* fix(types): destructure watermark prop in PhotoGrid function signature

* feat(seo): add configurable subpage title template and metadata descriptions

* feat(seo): add generateMetadata to about page for title template support

* feat(proofing): add client proofing, favorites selection, compact URL bitmasking, and export modal

* feat(essay): add Photo Essay storytelling mode with RSC markdown parser and fullbleed/pair layouts

* feat(subpages): add page enabled toggle to deactivate subpages without deleting them

* feat(admin): add visual essay block builder for photo essay storytelling pages

* security: add Trivy container scan to Docker publish workflow

Scans the built image for CRITICAL/HIGH CVEs on every release and
uploads results to the GitHub Security tab. Non-blocking for now
(exit-code 0) so releases aren't gated on findings. Also documents
the scan and existing Dependabot coverage in the README.

---------

Co-authored-by: ralksta <ralksta@users.noreply.github.com>

components/Lightbox.module.css

@@ -252,6 +252,39 @@
   opacity: 1;
 }
 
+/* ── Watermark Overlay ────────────────────────────── */
+.watermark {
+  position: absolute;
+  z-index: 10;
+  pointer-events: none;
+  font-family: var(--font-sans);
+  font-size: 0.85rem;
+  font-weight: 600;
+  letter-spacing: 0.1em;
+  text-transform: uppercase;
+  color: #ffffff;
+  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.9), 0 0 10px rgba(0, 0, 0, 0.7);
+  padding: 12px 16px;
+  user-select: none;
+}
+
+.watermark_bottom_right {
+  bottom: 12px;
+  right: 16px;
+}
+
+.watermark_bottom_left {
+  bottom: 12px;
+  left: 16px;
+}
+
+.watermark_center {
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+}
+
+
 @media (hover: none) {
   .close,
   .nav,