48a13c43ee
The hand-rolled sequential accept loop, its SO_RCVTIMEO band-aid, and the whole src/server/http.sx module are retired: distd is now a std.http handler. Server.init gets the store directory through the ctx word; route() fills a Response instead of writing to a socket; every handler ports mechanically (respond_error/load_or_503/respond_render take *Response; bodies allocate from the per-request arena, never the stack, since serialization happens after the handler returns). Downloads keep X-Checksum-SHA256 via extra_headers; auth takes the extracted Authorization value; the 411 contract (POST/PUT must declare Content-Length) moves into the handler, pinned as before. Config: 512 MiB read cap (whole-body artifact uploads), 120s request deadline, 5s keepalive, 200 requests per connection. Idle connections now cost nothing — timeouts evict, never block. http_client gains its own 10s read timeout (the old shared helper's secs->ms change had silently shrunk it to 10ms). tests/server_http.sx pins the architecture: a request answers within 1s while SIX idle preconnects are held open (the retired loop paid 250ms-2s per idle socket serially), and two requests ride one keep-alive connection. make test 24/24 green.