perf(explorer): client side explorer (#1810)

* start work on client side explorer

* fix tests

* fmt

* generic test flag

* add prenav hook

* add highlight class

* make flex more consistent, remove transition

* open folders that are prefixes of current path

* make mobile look nice

* more style fixes

quartz/plugins/emitters/contentIndex.tsx

@@ -11,6 +11,7 @@ import DepGraph from "../../depgraph"
 
 export type ContentIndexMap = Map<FullSlug, ContentDetails>
 export type ContentDetails = {
+  slug: FullSlug
   title: string
   links: SimpleSlug[]
   tags: string[]
@@ -124,6 +125,7 @@ export const ContentIndex: QuartzEmitterPlugin<Partial<Options>> = (opts) => {
         const date = getDate(ctx.cfg.configuration, file.data) ?? new Date()
         if (opts?.includeEmptyFiles || (file.data.text && file.data.text !== "")) {
           linkIndex.set(slug, {
+            slug,
             title: file.data.frontmatter?.title!,
             links: file.data.links ?? [],
             tags: file.data.frontmatter?.tags ?? [],