refactor: deslop — remove dead botanica preset, extract shared helpers

- Remove dead  theme preset (no CSS, not in DevToolbar)
- Extract  from closure → module-level export in lib/config/index.ts
- Extract  helper in app/[...path]/page.tsx to deduplicate password gate check
- Extract  inner component in app/page.tsx (was 4× inline in minimal/fullbleed/mosaic/split)
- Add 8 unit tests for buildSubpageGrid covering undefined, subset fields, layout fallback, and all fields

app/[...path]/page.tsx

@@ -106,6 +106,21 @@ function toPhotoItems(assets: ImmichAsset[], showExif: boolean): PhotoItem[] {
     });
 }
 
+/**
+ * Returns a PasswordGate element if the slug is protected and not yet
+ * authenticated, otherwise returns null. Centralises the duplicated
+ * cookie-check boilerplate.
+ */
+async function gateIfProtected(slug: string): Promise<React.ReactElement | null> {
+  if (!isProtected(slug)) return null;
+  const cookieStore = await cookies();
+  const getCookie = (name: string) => cookieStore.get(name)?.value;
+  if (isAuthenticated(slug, getCookie)) return null;
+  const subpageData = await immich.getSubpageAlbums(slug);
+  const title = subpageData?.subpage.name ?? slug;
+  return <PasswordGate slug={slug} title={title} />;
+}
+
 export default async function PathPage({ params }: PathPageProps) {
   const { path } = await params;
   const config = getConfig();
@@ -131,15 +146,8 @@ export default async function PathPage({ params }: PathPageProps) {
     const [subpageSlug, albumSlug] = path;
 
     // Password gate for protected subpages
-    if (isProtected(subpageSlug)) {
-      const cookieStore = await cookies();
-      const getCookie = (name: string) => cookieStore.get(name)?.value;
-      if (!isAuthenticated(subpageSlug, getCookie)) {
-        const subpageData = await immich.getSubpageAlbums(subpageSlug);
-        const subpageName = subpageData?.subpage.name ?? subpageSlug;
-        return <PasswordGate slug={subpageSlug} title={subpageName} />;
-      }
-    }
+    const gate = await gateIfProtected(subpageSlug);
+    if (gate) return gate;
 
     const album = await immich.getAlbumBySlug(albumSlug, subpageSlug);
 
@@ -172,15 +180,8 @@ export default async function PathPage({ params }: PathPageProps) {
   // Check if it's a subpage
   if (immich.isSubpageSlug(slug)) {
     // Password gate for protected subpages
-    if (isProtected(slug)) {
-      const cookieStore = await cookies();
-      const getCookie = (name: string) => cookieStore.get(name)?.value;
-      if (!isAuthenticated(slug, getCookie)) {
-        const subpageData = await immich.getSubpageAlbums(slug);
-        const subpageName = subpageData?.subpage.name ?? slug;
-        return <PasswordGate slug={slug} title={subpageName} />;
-      }
-    }
+    const gate = await gateIfProtected(slug);
+    if (gate) return gate;
 
     const result = await immich.getSubpageAlbums(slug);
     if (!result || result.albums.length === 0) {

app/page.tsx

@@ -140,6 +140,27 @@ export default async function HomePage() {
     );
   }
 
+  /** Title + optional subtitle + nav — shared by mosaic, minimal, fullbleed, split. */
+  function HeroTextContent() {
+    return (
+      <>
+        <FadeIn delay={0}>
+          <h1 className="hero__title">{config.siteTitle}</h1>
+        </FadeIn>
+        {config.siteSubtitle && (
+          <FadeIn delay={100}>
+            <p className="hero__subtitle">{config.siteSubtitle}</p>
+          </FadeIn>
+        )}
+        <FadeIn delay={200}>
+          <nav className="hero__nav">
+            <HeroNavLinks subpages={subpages} albums={albums} />
+          </nav>
+        </FadeIn>
+      </>
+    );
+  }
+
   // ── Mosaic: multi-image grid with frosted title overlay ────────
   if (heroStyle === 'mosaic') {
     return (
@@ -161,19 +182,7 @@ export default async function HomePage() {
           ))}
         </div>
         <div className="hero__mosaic-overlay">
-          <FadeIn delay={0}>
-            <h1 className="hero__title">{config.siteTitle}</h1>
-          </FadeIn>
-          {config.siteSubtitle && (
-            <FadeIn delay={100}>
-              <p className="hero__subtitle">{config.siteSubtitle}</p>
-            </FadeIn>
-          )}
-          <FadeIn delay={200}>
-            <nav className="hero__nav">
-              <HeroNavLinks subpages={subpages} albums={albums} />
-            </nav>
-          </FadeIn>
+          <HeroTextContent />
         </div>
       </div>
     );
@@ -184,19 +193,7 @@ export default async function HomePage() {
     return (
       <div className="hero hero--minimal">
         <div className="hero__content">
-          <FadeIn delay={0}>
-            <h1 className="hero__title">{config.siteTitle}</h1>
-          </FadeIn>
-          {config.siteSubtitle && (
-            <FadeIn delay={100}>
-              <p className="hero__subtitle">{config.siteSubtitle}</p>
-            </FadeIn>
-          )}
-          <FadeIn delay={200}>
-            <nav className="hero__nav">
-              <HeroNavLinks subpages={subpages} albums={albums} />
-            </nav>
-          </FadeIn>
+          <HeroTextContent />
         </div>
       </div>
     );
@@ -208,19 +205,7 @@ export default async function HomePage() {
       <div className="hero hero--fullbleed">
         <HeroCarousel images={heroData} />
         <div className="hero__fullbleed-overlay">
-          <FadeIn delay={0}>
-            <h1 className="hero__title">{config.siteTitle}</h1>
-          </FadeIn>
-          {config.siteSubtitle && (
-            <FadeIn delay={100}>
-              <p className="hero__subtitle">{config.siteSubtitle}</p>
-            </FadeIn>
-          )}
-          <FadeIn delay={200}>
-            <nav className="hero__nav">
-              <HeroNavLinks subpages={subpages} albums={albums} />
-            </nav>
-          </FadeIn>
+          <HeroTextContent />
         </div>
       </div>
     );
@@ -232,20 +217,7 @@ export default async function HomePage() {
       {/* ── Left Panel ──────────────────────────────── */}
       <div className="hero__left">
         <div className="hero__content">
-          <FadeIn delay={0}>
-            <h1 className="hero__title">{config.siteTitle}</h1>
-          </FadeIn>
-          {config.siteSubtitle && (
-            <FadeIn delay={100}>
-              <p className="hero__subtitle">{config.siteSubtitle}</p>
-            </FadeIn>
-          )}
-
-          <FadeIn delay={200}>
-            <nav className="hero__nav">
-              <HeroNavLinks subpages={subpages} albums={albums} />
-            </nav>
-          </FadeIn>
+          <HeroTextContent />
         </div>
       </div>
 

lib/__tests__/config.test.ts

@@ -12,7 +12,7 @@ vi.mock('@/lib/env', () => ({
   },
 }));
 
-import { slugify } from '@/lib/config';
+import { slugify, buildSubpageGrid } from '@/lib/config';
 
 describe('slugify', () => {
   it('converts a simple name to lowercase with hyphens', () => {
@@ -51,3 +51,50 @@ describe('slugify', () => {
     expect(slugify('Album 2024')).toBe('album-2024');
   });
 });
+
+describe('buildSubpageGrid', () => {
+  it('returns empty object when called without arguments', () => {
+    expect(buildSubpageGrid()).toEqual({});
+  });
+
+  it('returns empty object when called with undefined', () => {
+    expect(buildSubpageGrid(undefined)).toEqual({});
+  });
+
+  it('maps columns and gap correctly', () => {
+    expect(buildSubpageGrid({ columns: 4, gap: 8 })).toEqual({
+      grid: { columns: 4, gap: 8 },
+    });
+  });
+
+  it('maps aspectRatio correctly', () => {
+    expect(buildSubpageGrid({ aspectRatio: '16/9' })).toEqual({
+      grid: { aspectRatio: '16/9' },
+    });
+  });
+
+  it('preserves a valid layout value', () => {
+    expect(buildSubpageGrid({ layout: 'uniform' })).toEqual({
+      grid: { layout: 'uniform' },
+    });
+  });
+
+  it('falls back to masonry for an unknown layout', () => {
+    expect(buildSubpageGrid({ layout: 'unknown-layout' })).toEqual({
+      grid: { layout: 'masonry' },
+    });
+  });
+
+  it('omits fields that are not supplied', () => {
+    const result = buildSubpageGrid({ columns: 2 });
+    expect(result).toEqual({ grid: { columns: 2 } });
+    expect((result as { grid: object }).grid).not.toHaveProperty('gap');
+    expect((result as { grid: object }).grid).not.toHaveProperty('layout');
+  });
+
+  it('handles all fields together', () => {
+    expect(
+      buildSubpageGrid({ columns: 3, gap: 16, aspectRatio: '1', layout: 'masonry' }),
+    ).toEqual({ grid: { columns: 3, gap: 16, aspectRatio: '1', layout: 'masonry' } });
+  });
+});

lib/config/index.ts

@@ -15,6 +15,28 @@ export * from './schema';
 export * from './theme';
 
 let _config: AppConfig | null = null;
+
+/** Converts raw YAML grid overrides into a typed partial GridConfig. */
+export function buildSubpageGrid(
+  raw?: { columns?: number; gap?: number; aspectRatio?: string; layout?: string },
+): { grid: Partial<GridConfig> } | Record<string, never> {
+  if (!raw) return {};
+  return {
+    grid: {
+      ...(raw.columns != null ? { columns: raw.columns } : {}),
+      ...(raw.gap != null ? { gap: raw.gap } : {}),
+      ...(raw.aspectRatio != null ? { aspectRatio: raw.aspectRatio } : {}),
+      ...(raw.layout != null
+        ? {
+            layout: (VALID_LAYOUTS.includes(raw.layout)
+              ? raw.layout
+              : 'masonry') as GridConfig['layout'],
+          }
+        : {}),
+    },
+  };
+}
+
 export function getConfig(): AppConfig {
   const isDev = process.env.NODE_ENV !== 'production';
   if (_config && !isDev) return _config;
@@ -135,22 +157,7 @@ export function getConfig(): AppConfig {
         albumIds,
         sections,
         password: sp.password,
-        ...(sp.grid
-          ? {
-              grid: {
-                ...(sp.grid.columns != null ? { columns: sp.grid.columns } : {}),
-                ...(sp.grid.gap != null ? { gap: sp.grid.gap } : {}),
-                ...(sp.grid.aspectRatio != null ? { aspectRatio: sp.grid.aspectRatio } : {}),
-                ...(sp.grid.layout != null
-                  ? {
-                      layout: (VALID_LAYOUTS.includes(sp.grid.layout)
-                        ? sp.grid.layout
-                        : 'masonry') as GridConfig['layout'],
-                    }
-                  : {}),
-              },
-            }
-          : {}),
+        ...buildSubpageGrid(sp.grid),
       };
     });
   } else if (gallery.subpages) {
@@ -178,22 +185,7 @@ export function getConfig(): AppConfig {
         subtitle: sp.subtitle,
         albumIds: albumEntries.map((entry) => processAlbumEntry(entry, `subpage "${name}"`)),
         password: sp.password,
-        ...(sp.grid
-          ? {
-              grid: {
-                ...(sp.grid.columns != null ? { columns: sp.grid.columns } : {}),
-                ...(sp.grid.gap != null ? { gap: sp.grid.gap } : {}),
-                ...(sp.grid.aspectRatio != null ? { aspectRatio: sp.grid.aspectRatio } : {}),
-                ...(sp.grid.layout != null
-                  ? {
-                      layout: (VALID_LAYOUTS.includes(sp.grid.layout)
-                        ? sp.grid.layout
-                        : 'masonry') as GridConfig['layout'],
-                    }
-                  : {}),
-              },
-            }
-          : {}),
+        ...buildSubpageGrid(sp.grid),
       };
     });
   }

lib/config/theme.ts

@@ -61,16 +61,6 @@ export const THEME_PRESETS: Record<string, ThemeConfig> = {
     headerDot: false,
     heroStyle: 'typographic',
   },
-  botanica: {
-    preset: 'botanica',
-    accent: '#4a7c59',
-    fonts: { heading: 'Cormorant Garamond', body: 'Nunito Sans', caption: 'Inconsolata' },
-    radius: 8,
-    photoFrame: 'none',
-    grain: false,
-    headerDot: true,
-    heroStyle: 'split',
-  },
 };
 
 export const VALID_PHOTO_FRAMES = ['none', 'passepartout', 'shadow'];