Implement path-based secret loading

package.json

@@ -9,7 +9,8 @@
 		"build": "react-router build",
 		"dev": "HEADPLANE_LOAD_ENV_OVERRIDES=true HEADPLANE_CONFIG_PATH=./config.example.yaml react-router dev",
 		"start": "node build/server/index.js",
-		"typecheck": "tsc"
+		"typecheck": "tsc",
+		"test": "vitest run"
 	},
 	"dependencies": {
 		"@dnd-kit/core": "^6.3.1",
@@ -29,7 +30,7 @@
 		"@uiw/codemirror-theme-github": "^4.23.7",
 		"@uiw/codemirror-theme-xcode": "^4.23.8",
 		"@uiw/react-codemirror": "^4.23.7",
-		"arktype": "^2.0.4",
+		"arktype": "^2.1.20",
 		"clsx": "^2.1.1",
 		"dotenv": "^16.4.7",
 		"isbot": "^5.1.19",
@@ -57,10 +58,12 @@
 		"@babel/preset-typescript": "^7.26.0",
 		"@biomejs/biome": "^1.9.4",
 		"@react-router/dev": "^7.4.0",
+		"@types/node": "^22.15.17",
 		"@types/websocket": "^1.0.10",
 		"@types/ws": "^8.5.13",
 		"autoprefixer": "^10.4.21",
 		"babel-plugin-react-compiler": "19.0.0-beta-55955c9-20241229",
+		"js-yaml": "^4.1.0",
 		"lefthook": "^1.10.9",
 		"postcss": "^8.5.3",
 		"react-router-dom": "^7.4.0",
@@ -72,7 +75,8 @@
 		"vite": "^6.2.2",
 		"vite-node": "^3.0.8",
 		"vite-plugin-babel": "^1.3.0",
-		"vite-tsconfig-paths": "^5.1.4"
+		"vite-tsconfig-paths": "^5.1.4",
+		"vitest": "^3.1.3"
 	},
 	"packageManager": "pnpm@10.4.0",
 	"engines": {