Make old project runnable on Go 1.27 with mise and READMEHEADmaster

- init go.mod (Go 1.27, progressbar/v3 v3.19.1) and fix import
- fix FMin returning max, remove deprecated RenderBlank, apply go fix range loops
- add mise.toml (go 1.27, tasks: build/run/check with go fix -diff/clean)
- add focused README and update .gitignore for build artifacts

1 files changed, 12 insertions, 0 deletions

diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..d32608b
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,12 @@
+module goraytracer
+
+go 1.27
+
+require github.com/schollz/progressbar/v3 v3.19.1
+
+require (
+	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	golang.org/x/sys v0.46.0 // indirect
+	golang.org/x/term v0.44.0 // indirect
+)