refactor(routes): canonical URLs now match sablog format exactly

- /show-{id}.shtml (comments page: /show-{id}-{page}.shtml)
- /category-{cid}.shtml / /category-{cid}-{page}.shtml
- /archives-{YYYYMM}.shtml / /archives-{YYYYMM}-{page}.shtml
- /tag/{name}, /tagslist.shtml, /index-{page}.shtml
- slug 时代的 /posts/{slug} 等旧格式全部 301 到 sablog 格式

themes/sablog/views/show.blade.php

@@ -38,7 +38,7 @@
             <time datetime="{{ $post->published_at->toIso8601String() }}">{{ $post->published_at->format(blog_setting('normaltime', 'Y-m-d H:i')) }}</time>
             @if($post->author)<span>· {{ $post->author->name }}</span>@endif
             @if($post->category)
-                <span>· <a href="{{ route('category.show', $post->category->slug ?: $post->category->id) }}">{{ $post->category->name }}</a></span>
+                <span>· <a href="{{ route('category.show', $post->category->id) }}">{{ $post->category->name }}</a></span>
             @endif
             <span>· 阅读 {{ $post->views }}</span>
         </div>
@@ -52,7 +52,7 @@
         @if($post->tags->isNotEmpty())
             <div class="post-tags">
                 @foreach($post->tags as $tag)
-                    <a href="{{ route('tags.show', $tag->slug ?: $tag->name) }}" class="tag-link">#{{ $tag->name }}</a>
+                    <a href="{{ route('tags.show', $tag->name) }}" class="tag-link">#{{ $tag->name }}</a>
                 @endforeach
             </div>
         @endif