refactor: remove Storybook UI components and related scripts

- Updated `extract_template_body` function to simplify closure definition.
- Removed Storybook commands from `scripts.md`.
- Changed status from planned to in-progress in the removal spec for Storybook UI components.
- Updated `turbo.json` to remove Storybook configuration and outputs.

Author: tikazyq

Makefile

@@ -52,9 +52,6 @@ dev-web:
 dev-desktop:
 	pnpm dev:desktop
 
-dev-storybook:
-	turbo run storybook --filter=@leanspec/ui-components
-
 # Build & Test
 build:
 	pnpm build

packages/ui-components/.storybook/main.ts

@@ -235,9 +235,6 @@ pnpm install
 # Build the library
 pnpm build
 
-# Run Storybook
-pnpm storybook
-
 # Run tests
 pnpm test
 ```

packages/ui-components/.storybook/preview.ts

@@ -28,9 +28,7 @@
     "build:types": "tsc --emitDeclarationOnly --outDir dist",
     "typecheck": "tsc --noEmit",
     "test": "vitest run",
-    "test:watch": "vitest",
-    "storybook": "storybook dev -p 6006",
-    "build-storybook": "storybook build"
+    "test:watch": "vitest"
   },
   "keywords": [
     "leanspec",
@@ -74,12 +72,6 @@
     "tailwind-merge": "^3.4.0"
   },
   "devDependencies": {
-    "@storybook/addon-essentials": "^8.6.14",
-    "@storybook/addon-interactions": "^8.6.14",
-    "@storybook/addon-links": "^8.6.15",
-    "@storybook/react": "^8.6.15",
-    "@storybook/react-vite": "^8.6.15",
-    "@storybook/test": "^8.6.15",
     "@tailwindcss/typography": "^0.5.19",
     "@types/node": "^20.19.27",
     "@types/react": "^19.2.7",
@@ -89,7 +81,6 @@
     "postcss": "^8.5.6",
     "react": "19.2.0",
     "react-dom": "19.2.0",
-    "storybook": "^8.6.15",
     "tailwindcss": "^3.4.19",
     "typescript": "^5.9.3",
     "vite": "^6.4.1",