feat(theme): 六类页面渲染与路由分派

单一动态路由 [...slug].astro 读 routes.json html 纯路径行分派六模板
（home/typeKey 详情/分类前缀列表/news 主列表），无法分派即构建明错；
404 独立静态页。夹具扩展为六页集（真实 hesupipe 抽样形状脱敏化：
knownFields.postDate/title、media 块 attachmentRefs.* fieldPath、
/products/ 内容页占据、编码路径 + .html 字面路径防御）。

字面 .html 路径对齐钩子（astro.config 内联 integration）：Astro 页面
产物在 directory/file/preserve 三态均产不出 dist/news/x.html 字面文件，
构建收尾把包装目录折平为字面文件——target_file 契约对齐。

构建级测试 8 例（render-cases）：全量映射/编码字节原样/首页截断/
产品参数相册/新闻字面 .html/列表两类/SEO 基线。372 → 380。

Co-Authored-By: Claude Code <noreply@anthropic.com>

themes/pilot-minimal/test/fixtures/render-input/render-manifest.json

@@ -1 +1 @@
-{"counts":{"assets":1,"contents":3,"routes":7,"taxonomies":1},"generatedAt":"2026-10-22T00:00:00.000Z","renderSnapshotVersion":1,"sourceHashes":{"asset":"cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc","content":"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","route":"bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"},"urlRewrite":{"rewritten":1,"unresolved":0},"versions":{"adapter":"0.1.0","mapping":"0.1.0","parser":"0.1.0","sanitizer":"0.1.0"}}
+{"counts":{"assets":3,"contents":11,"routes":15,"taxonomies":1},"generatedAt":"2026-10-22T00:00:00.000Z","renderSnapshotVersion":1,"sourceHashes":{"asset":"2983bb5bd0383029c9e0d6f7892e034f7096004ed0c601eadb9c9aab3df456f0","content":"c57c18ddacc964c11b6f70c3b27d00420288aeb052261d86f6f93abebe7512c4","route":"8137f1efc594e7ae0b1d62398aee3fb64958ce2f33bee73be2a89dc2cec08948"},"urlRewrite":{"rewritten":1,"unresolved":0},"versions":{"adapter":"0.1.0","mapping":"0.1.0","parser":"0.1.0","sanitizer":"0.1.0"}}