Adds 'hyperguild brain pass-rate <skill> [--window 7d] [--json]'
calling the new /pass-rate endpoint. Human output:
tdd: 47 / 50 = 94% (window: 7d)
or 'no data (window: 7d)' when pass_rate is null.
PassRateResult mirrors the response envelope; PassRate is *float64
so null is preserved across decode.
The brain HTTP REST /query endpoint accepts POST with JSON
{query, limit}, not GET with URL query string. Surfaced by
Task 7 smoke testing — GET returned 405 Method Not Allowed.
The response shape ({results:[...]}) is unchanged; only the
request side flips to POST + JSON body. brainClient.Write was
already using POST + JSON body and is unaffected.
Tests updated to assert POST + JSON body on the Query path.
Reads markdown from stdin, POSTs to the brain's /write endpoint with
type + slug, prints the resulting path. Pairs with 'brain query' for
shell-friendly read/write access to the brain HTTP REST API.
Tests cover success, missing args, backend error propagation, and
empty stdin (which produces an empty content payload — the brain
server's responsibility to validate).
Adds 'hyperguild brain query <topic>' against the brain HTTP REST
/query endpoint. Default human output prints path + score + title;
--json passes through the response envelope. --limit overrides the
default 5-result cap.
runBrainWrite remains a stub for Task 5.
mathias