Starting a fill no longer POSTs the cache id to /_fill. Instead:
- the created page links the cache's webkey, /cache/#<cache id>: a
skeleton page, the same for every key, that reads the key from the
fragment (never sent to the server or in a Referer)
- its script trades the key in-band for a capability over Cap'n Web at
/api: CacheApi.cache(key) returns a CacheCap facet (fill, status,
fingerprint, the public companion's fill) and never the DO's wiring
methods; malformed and unknown keys get one refusal that never echoes
the key, and each refusal is logged without it
- then calls startFill(): trade and call pipeline into one round trip
- the worker serves capnweb's browser build itself at /_capnweb.js (a
wrangler Text rule), so no third-party script sits beside the key
The /_fill route and its forms are gone. Tests run the real capnweb
client against the worker (fetch routed to worker.fetch).
Generated-by: Claude Opus 5.5
dckc
8c221abe6f