SquidUp testfixture — deterministic HTTP endpoints for monitoring tests.

/status/:code[/:body]          return given status, optional body
/delay/:ms[/:code]             sleep ms then respond
/redirect/:n                   n hops before final 200
/redirect-loop                 infinite redirect
/json                          simple JSON body
/json/complex                  nested JSON, good for json_path_equals
/json/invalid                  malformed JSON with Content-Type: application/json
/html                          small HTML with keyword "healthy"
/text                          plain text
/empty                         zero-byte 200
/large/:bytes                  N bytes body (cap 20 MiB)
/basic-auth/:user/:pass        require Basic auth matching
/bearer                        require Authorization: Bearer <non-empty>
/api-key/:header               require header :header with any value
/flaky/:rate[/:code]           fail rate% deterministically per-minute
/toggle/:name (GET)            200 if on, 503 if off
/toggle/:name (POST)           flip the switch
/graphql                       fake GraphQL; body.query: "error"/"null"/else
/echo                          reflects method, path, headers, body
/headers                       reflects only headers
/healthz                       always 200 {"status":"up"}
/ok                            always 200 "ok"
/version                       fixture version