This adds the HTMLRewriter-based bookmark unfurler to the demo server.
It moves the unfurler into worker-shared, and adds some better shared
error handling across our workers.
I removed the fallback bookmark fetcher where we try and fetch websites
locally. This will almost never work, as it requires sites to set public
CORS.
### Change type
- [x] `other`
Adds an assets server to the demo worker, and reworks the existing asset
server to use the same code. There are a few simplifications to the code
due to some DX improvements working with R2 and caches. I also removed
the `HEAD` request from the assets server: i took a look at our logs and
it's not actually used at all.
This also fixes an issue where users could overwrite the contents of the
asset uploads bucket.
### Change type
- [x] `other`
Describe what your pull request does. If you can, add GIFs or images
showing the before and after of your change.
### Change type
- [x] `bugfix`
- [ ] `improvement`
- [ ] `feature`
- [ ] `api`
- [ ] `other`
### Test plan
1. Create a shape...
2.
- [ ] Unit tests
- [ ] End to end tests
### Release notes
- Fixed a bug with...
---------
Co-authored-by: alex <alex@dytry.ch>
Sets up preview deploys etc. for bemo worker.
There's enough going on here that I wanted to make it its own PR. I'll
rework david's spike on top of it once it's landed.
### Change Type
- [x] `internal` — Does not affect user-facing stuff
- [x] `chore` — Updating dependencies, other boring stuff
---------
Co-authored-by: David Sheldrick <d.j.sheldrick@gmail.com>
