chore: establish local platform baseline

cmd/rtc-conformance/main.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"data-terminal-cloud/internal/rtcconformance"
+)
+
+func main() {
+	capturePath := flag.String("capture", "", "real-device-rtc-capture-v1 JSON")
+	candidateVersion := flag.String("candidate-version", "", "release candidate version")
+	buildDigest := flag.String("build-digest", "", "sha256 immutable build digest")
+	outputPath := flag.String("output", "", "absolute output report path")
+	flag.Parse()
+	if *capturePath == "" || strings.TrimSpace(*candidateVersion) == "" || strings.TrimSpace(*buildDigest) == "" || !filepath.IsAbs(*outputPath) {
+		fmt.Fprintln(os.Stderr, "usage: rtc-conformance -capture capture.json -candidate-version VERSION -build-digest sha256:... -output ABSOLUTE.json")
+		os.Exit(2)
+	}
+	content, err := os.ReadFile(*capturePath)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "read RTC capture:", err)
+		os.Exit(2)
+	}
+	capture, err := rtcconformance.ParseCapture(content)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(2)
+	}
+	report := rtcconformance.Evaluate(capture, *candidateVersion, *buildDigest, time.Now().UTC())
+	report.InputSHA256["rtc_capture"] = rtcconformance.SHA256(content)
+	encoded, _ := json.MarshalIndent(report, "", "  ")
+	encoded = append(encoded, '\n')
+	if err = os.WriteFile(*outputPath, encoded, 0o600); err != nil {
+		fmt.Fprintln(os.Stderr, "write RTC report:", err)
+		os.Exit(2)
+	}
+	fmt.Printf("real device RTC conformance %s: %s\n", report.Result, *outputPath)
+	if report.Result != "PASS" {
+		os.Exit(1)
+	}
+}