Fix buildBonsai split error: Astro 6 githubSlug transforms 'i.bonsai' to
'ibonsai' breaking the semtree root lookup. Added custom generateId to the
index collection and switched to doc.id directly as bonsaiText key.
Move buildBonsai from module-level await to per-component call so it runs
after the content store is ready.
Add /entries index page listing all wiki pages.
brutsalvadi
5786fd827f