chore(rust): gap-fill progress lines; slow-statement warning at 30 s

rust/Cargo.toml

@@ -15,6 +15,7 @@ repository = "https://git.b4l.co.th/B4L/Northern-Thailand-Ping-River-Monitor"
 anyhow = "1"
 chrono = { version = "0.4", default-features = false, features = ["std", "clock", "serde"] }
 clap = { version = "4", features = ["derive"] }
+log = "0.4"
 # native-tls (OpenSSL on Linux, SChannel on Windows), not rustls: app.rid.go.th (dams)
 # offers only TLS 1.2 CBC suites (ECDHE-RSA-AES256-SHA384), which rustls refuses.
 reqwest = { version = "0.12", default-features = false, features = ["native-tls", "json"] }