Second half of the staging Firefox boot failure: the bucket stores
artifacts brotli-compressed (publish-wasm --compress br) with
Content-Encoding in the object metadata, but the worker returned them
with the default encodeBody:'automatic' — the runtime drops a user-set
Content-Encoding and re-negotiates, and on workers.dev that served the
raw brotli bytes with NO encoding header. The editor <script> tags
loaded binary garbage: Firefox fires onload and silently executes
nothing, so wxElementRegistry/Module never appeared even after the 206
fix. encodeBody:'manual' passes the header+body through untouched
(verified against local workerd with a br-encoded seeded object).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PmR6goSk7JC17h7fkgGvHG
2b9ba1a6db