Merge pull request #112 from infraspecdev/feat/disable-keepalive-flag

feat: add --disable-keepalive

Merge pull request #109 from infraspecdev/feat/disable-redirects

feat: add option to disable redirects

Merge pull request #107 from infraspecdev/feat/custom-user-agent

feat: add custom User-Agent header (goperf/<version>)

Merge pull request #104 from infraspecdev/feat/install-script

feat: add installation script for goperf binaries

Merge pull request #101 from infraspecdev/feat/ux-improvements-eshaan

feat: ux improvements

Merge pull request #100 from infraspecdev/fix/root-cmd-help

fix: return help menu on empty arguments

Merge pull request #99 from infraspecdev/feat/error-categorization

feat: add detailed status code and error categorization tracking.

Merge pull request #98 from infraspecdev/feat/latency-formatting

feat: add decimal latency formatting and update CLI help

Merge pull request #96 from infraspecdev/feat/json-output

feat: add JSON output support to goperf

Merge pull request #89 from infraspecdev/test/engine-accuracy-tests

fix: distinguish per-request timeouts from shutdown cancellation and add engine accuracy tests