ui: separate trackers from projects; keep header dropdown on top

- /trackers index, Trackers section on the homepage and in the header nav;
  /projects lists only projects (tracker URLs unchanged)
- header is its own z-50 layer and <main> is isolated, so maps, charts and
  sticky tables no longer paint over the nav dropdowns

src/lib/projects.ts

@@ -1,3 +1,4 @@
+// Real projects (tools and experiments). Personal data trackers live in `trackers`.
 export const projects = [
 	{
 		name: 'vash esports',
@@ -5,18 +6,6 @@ export const projects = [
 		href: 'https://esports.vash.software',
 		external: true
 	},
-	{
-		name: 'game tracker',
-		subtitle: 'every pokemon in every game, and call of duty camo mastery',
-		href: '/projects/game-tracker',
-		external: false
-	},
-	{
-		name: 'animaldex',
-		subtitle: 'add neighborhood pets to the world map',
-		href: '/projects/animaldex',
-		external: false
-	},
 	{
 		name: 'osu! map finder',
 		subtitle: 'find osu! maps for Spotify songs/albums/playlists',
@@ -40,6 +29,16 @@ export const projects = [
 		subtitle: 'Dutch, Korean and English, from zero to fluent',
 		href: '/projects/language-learner',
 		external: false
+	}
+] as const;
+
+// Trackers keep their existing /projects/... URLs (no moves, so no redirects needed).
+export const trackers = [
+	{
+		name: 'game tracker',
+		subtitle: 'every pokemon in every game, and call of duty camo mastery',
+		href: '/projects/game-tracker',
+		external: false
 	},
 	{
 		name: 'money tracker',
@@ -58,5 +57,17 @@ export const projects = [
 		subtitle: 'Counter-Strike market prices across time',
 		href: '/projects/cs-prices',
 		external: false
+	},
+	{
+		name: 'animaldex',
+		subtitle: 'add neighborhood pets to the world map',
+		href: '/projects/animaldex',
+		external: false
+	},
+	{
+		name: 'lists',
+		subtitle: 'books, games, places and other things worth keeping',
+		href: '/lists',
+		external: false
 	}
 ] as const;