Add startup logging for debugging

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

main.go

@@ -28,11 +28,16 @@ var (
 )
 
 func init() {
+	log.Println("starting up")
+
 	templates = template.Must(template.New("").ParseGlob("static/*.html"))
 	template.Must(templates.ParseGlob("static/*.js"))
 
+	pgconn := os.Getenv("PGCONN")
+	log.Println("connecting to database:", pgconn[:min(len(pgconn), 30)]+"...")
+
 	var err error
-	db, err = sql.Open("postgres", os.Getenv("PGCONN"))
+	db, err = sql.Open("postgres", pgconn)
 	if err != nil {
 		log.Fatal("[ERROR] failed to open database: ", err)
 	}