Script, GH action to check that all go files compile, and any tests pass. (#16)

ci-check.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+set -e
+set -u
+set -o pipefail
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$ROOT"
+
+echo "== CI: Format code =="
+go fmt ./...
+echo "OK: formatting complete"
+
+echo "== CI: Run go vet =="
+if ! go vet ./...; then
+  echo "ERROR: go vet failed."
+  exit 1
+fi
+echo "OK: go vet passed"
+
+echo "== CI: Build all packages =="
+if ! go build ./...; then
+  echo "ERROR: go build ./... failed."
+  exit 1
+fi
+echo "OK: packages built"
+
+echo "== CI: Build example apps under internal/examples =="
+if [ -d "internal/examples" ]; then
+  count=0
+  while IFS= read -r -d '' mainfile; do
+    dir="$(dirname "$mainfile")"
+    echo "Building $dir"
+    if ! (cd "$dir" && go build); then
+      echo "ERROR: example build failed: $dir"
+      exit 1
+    fi
+    count=$((count + 1))
+  done < <(find internal/examples -type f -name "main.go" -print0)
+
+  if [ "$count" -eq 0 ]; then
+    echo "NOTE: no example main.go files found under internal/examples"
+  else
+    echo "OK: built $count example(s)"
+  fi
+else
+  echo "NOTE: internal/examples not found, skipping example builds"
+fi
+
+echo "== CI: Run tests =="
+if ! go test ./... 2>&1 | grep -v '\[no test files\]'; then
+  echo "ERROR: tests failed."
+  exit 1
+fi
+
+echo "SUCCESS: All checks passed."
+exit 0