Migrate to org user-pages: baseurl '' and live at daslab.github.io

- Repo renamed via gh API: DasLab/daslab-website -> DasLab/DasLab.github.io
  (the 2017 redirect from old DasLab.github.io -> old-ribokit.github.io
  did not block the rename).
- _config.yml baseurl '/daslab-website' -> '' so all relative_url filters
  emit root-relative paths.
- README updated to point at https://daslab.github.io/ and the local
  preview URL.

Author: rhiju

README.md

@@ -7,7 +7,7 @@ Static Jekyll site for [daslab.stanford.edu](https://daslab.stanford.edu).
 ```bash
 bundle install
 bundle exec jekyll serve
-# open http://localhost:4000/daslab-website/
+# open http://localhost:4000/
 ```
 
 ## Editing content
@@ -25,7 +25,7 @@ Each entry is a small markdown file with a frontmatter block at the top — copy
 
 Deployed via GitHub Pages, built by the workflow at `.github/workflows/pages.yml`. Currently live at:
 
-**https://daslab.github.io/daslab-website/**
+**https://daslab.github.io/**
 
 ### DNS cutover to daslab.stanford.edu (when ready)
 

_config.yml

@@ -1,7 +1,7 @@
 title: Das Lab
 description: Stanford Biochemistry Department — model and design the RNA sequences that define and regulate living systems.
 url: "https://daslab.github.io"
-baseurl: "/daslab-website"
+baseurl: ""
 
 permalink: /:collection/:name/