chore: ignore extensionless build artifacts at the repo root#61
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Compiled example programs (e.g. `chat` from `go build ./internal/examples/chat`) land at the repo root with no extension and were one `git add -A` from being committed — a 15MB binary nearly entered history. The hand-maintained per-name allowlist (/counter, /auth, ...) had drifted and never covered `chat`. Replace it with a general rule: ignore every root-level entry, then re-include directories, any file with an extension, and LICENSE (the only extensionless tracked file). Extensionless root files (build artifacts) are now ignored; a wanted one (e.g. Makefile) needs an explicit !/ line.
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Compiled example programs (e.g.
chatfromgo build ./internal/examples/chat) land at the repo root with no extension, and were onegit add -Afrom entering history — a 15MB binary was sitting untracked at root. The hand-maintained per-name allowlist (/counter,/auth, …) had drifted and never coveredchat.Change
gitignorehas no "no-extension" glob, so the rule ignores every root-level entry, then re-includes directories, any file with an extension, andLICENSE(the only extensionless tracked file). Net effect: extensionless root files (build artifacts) are ignored, everything else is tracked as normal. The drifted per-name allowlist is removed (subsumed).Caveat documented inline: a wanted extensionless root file (e.g.
Makefile) is also ignored and needs an explicit!/Makefileline. Scope is root-only — a binary built insideinternal/examples/X/isn't caught (same scope as the previous allowlist).Verification (
git check-ignore)chat,counter,coverage.out,bin,server,go.work,.claude✓LICENSE,app.go,go.mod,.golangci.yml,.gitignore,ci-check.sh,datastar.js, all source dirs ✓