feat(seo): implement dynamic metadata, sitemap, and robots.txt

Add dynamic meta tags for routes and entity detail pages
Generate sitemap.xml and robots.txt dynamically in Vite
Change default frontend port from 3000 to 20015

system-wordings.ts

@@ -64,6 +64,18 @@ export const systemWordingMessages = {
       logout: 'Log out',
       register: 'Register'
     },
+    seo: {
+      siteDescription:
+        'Browse Pokopia Wiki for Pokemon, habitats, items, recipes, daily tasks, and Life community posts for Pokemon Pokopia.',
+      pokemonDetailDescription:
+        'Read {name} details in Pokopia Wiki, including habitat, types, specialities, favourites, stats, related items, discussions, and edit history.',
+      itemDetailDescription:
+        'Browse {name} item details in Pokopia Wiki, including category, usage, acquisition methods, customization, related recipes, habitats, and Pokemon drops.',
+      habitatDetailDescription:
+        'View {name} habitat details in Pokopia Wiki, including recipes, possible Pokemon, maps, time, weather, discussions, and edit history.',
+      recipeDetailDescription:
+        'View the {name} recipe in Pokopia Wiki, including the result item, acquisition methods, materials, discussions, and edit history.'
+    },
     auth: {
       accountAccess: 'Trainer Pass',
       email: 'Email',
@@ -836,6 +848,13 @@ export const systemWordingMessages = {
       logout: '退出',
       register: '注册'
     },
+    seo: {
+      siteDescription: '浏览 Pokopia Wiki 的 Pokemon、栖息地、物品、材料单、每日清单和 Life 社区动态。',
+      pokemonDetailDescription: '查看 {name} 在 Pokopia Wiki 中的栖息地、属性、特长、喜欢的东西、六维、相关物品、讨论和编辑历史。',
+      itemDetailDescription: '查看 {name} 在 Pokopia Wiki 中的分类、用途、入手方式、自定义、相关材料单、栖息地和 Pokemon 掉落。',
+      habitatDetailDescription: '查看 {name} 在 Pokopia Wiki 中的配方、可能出现的 Pokemon、地图、时间、天气、讨论和编辑历史。',
+      recipeDetailDescription: '查看 {name} 材料单在 Pokopia Wiki 中的结果物品、入手方式、需要材料、讨论和编辑历史。'
+    },
     auth: {
       accountAccess: 'Trainer Pass',
       email: '邮箱',