feat: add TCG Management project node to skill tree

Adds TehRiehl TCG Management (https://tcg.tehriehldeal.com) under the
Personal Tools branch at (-400, 140), continuing the existing arc past
TehRiehlBudget.

Sized `medium` rather than `small` so it reads as the most substantial
project on the tree without competing visually with the Projects hub node.
Ships a new monochrome card-stack icon following the existing convention
(white fill, 800px, tinted coral at runtime by PixiJS).

Described as a multi-TCG manager rather than a Pokemon app: the system is
game-agnostic, with games keyed on TCGCSV category ids and gameId/gameName
as first-class dimensions through the API and UI.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

src/lib/data.ts

@@ -412,6 +412,35 @@ export const treeNodes: TreeNode[] = [
 		repoUrl: 'https://git.tehriehldeal.com/TehRiehlDeal/TehRiehlBudget',
 		status: 'active'
 	},
+	{
+		id: 'proj-tcg',
+		label: 'TCG Management',
+		description:
+			'Self-hosted trading card game collection and inventory manager built to handle any TCG, with per-game catalogs and daily market prices sourced from TCGCSV. Features a camera scanner that auto-detects cards on-device using OpenCV and perceptual-hash matching, plus wishlists, trade binders, transaction history, and price-trend analytics. Runs entirely on a homelab in Docker with self-hosted CI/CD.',
+		x: -400,
+		y: 140,
+		parentId: 'proj-tools',
+		category: 'projects',
+		size: 'medium',
+		icon: '/icons/tcg.svg',
+		techStack: [
+			'React',
+			'TypeScript',
+			'NestJS',
+			'Prisma',
+			'PostgreSQL',
+			'Redis/BullMQ',
+			'OpenCV.js',
+			'Redux Toolkit',
+			'TailwindCSS',
+			'ShadCN',
+			'PWA',
+			'Docker'
+		],
+		projectUrl: 'https://tcg.tehriehldeal.com',
+		repoUrl: 'https://git.tehriehldeal.com/TehRiehlDeal/tehriehltcgmanagement',
+		status: 'active'
+	},
 
 	// ========== GAMES CHILDREN ==========
 	{