fix: FilePreview fileType case + Tailwind v4 gradient transparent bug

- FilePreview.vue: add normalizedFileType computed to handle backend
  returning uppercase HTML/MD/PPTX (fixes preview/download buttons)
- FilePreview.vue: bg-gradient-to-r from-orange-500 -> bg-orange-500
  (Tailwind v4 gradient + CSS variable = transparent)
- ReportCard.vue: bg-gradient-to-r -> bg-orange-600 for selected state
- Add .opencode/, node_modules/, dist/ to .gitignore
- Initial git setup for publish project

package.json

@@ -0,0 +1,36 @@
+{
+  "name": "daily-report-frontend",
+  "version": "1.0.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite --host 0.0.0.0",
+    "build": "vite build",
+    "preview": "vite preview",
+    "test": "vitest",
+    "test:run": "vitest run",
+    "test:e2e": "playwright test",
+    "test:e2e:ui": "playwright test --ui"
+  },
+  "dependencies": {
+    "@vue-office/pptx": "^1.0.1",
+    "axios": "^1.6.8",
+    "marked": "^12.0.0",
+    "vue": "^3.4.21",
+    "vue-demi": "^0.14.6",
+    "vue-router": "^4.3.0"
+  },
+  "devDependencies": {
+    "@playwright/test": "^1.60.0",
+    "@tailwindcss/postcss": "^4.3.0",
+    "@tailwindcss/vite": "^4.3.0",
+    "@vitejs/plugin-vue": "^5.0.4",
+    "@vue/test-utils": "^2.4.6",
+    "autoprefixer": "^10.5.0",
+    "jsdom": "^24.0.0",
+    "postcss": "^8.5.15",
+    "tailwindcss": "^4.3.0",
+    "vite": "^5.2.0",
+    "vitest": "^1.4.0"
+  }
+}