zenno: add stat charts

zenno/package.json

@@ -23,8 +23,10 @@
 		"@sveltejs/kit": "^2.60.1",
 		"@sveltejs/vite-plugin-svelte": "^6.2.4",
 		"@tailwindcss/vite": "^4.3.0",
+		"@types/d3": "^7.4.3",
 		"@types/node": "^22.19.19",
 		"@vitest/browser-playwright": "^4.1.0",
+		"d3": "^7.9.0",
 		"eslint": "^10.4.0",
 		"eslint-config-prettier": "^10.1.8",
 		"eslint-plugin-svelte": "^3.17.1",
@@ -41,5 +43,8 @@
 		"vite": "^7.3.3",
 		"vitest": "^4.1.0",
 		"vitest-browser-svelte": "^2.1.1"
+	},
+	"dependencies": {
+		"@observablehq/plot": "^0.6.17"
 	}
 }