probe.Measure performs an HTTP GET and records total elapsed time from
request start to body fully read. main.go prints URL, status code, and
total for each positional URL argument, exiting 1 on any failure.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Sets up project structure, working conventions (CLAUDE.md), README with
the full assignment and roadmap, seeded CHANGELOG, and a buildable Go
scaffold (Step 0) with flag parsing and stub probe types.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
