feat(tf-logging): structured logging with sensitive field redaction (Story 0-5)

Cargo.toml

@@ -25,6 +25,11 @@ serde = { version = "1.0", features = ["derive"] }
 serde_yaml = "0.9"
 serde_json = "1.0"
 
+# Logging & Tracing
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["json", "env-filter", "fmt"] }
+tracing-appender = "0.2"
+
 # Error handling
 thiserror = "2.0"
 anyhow = "1.0"