Validate label names

Cargo.toml

@@ -70,18 +70,10 @@ pile-audio = { path = "crates/pile-audio" }
 pile-dataset = { path = "crates/pile-dataset" }
 
 # Clients
-reqwest = { version = "0.12.15", features = [
-	"multipart",
-	"json",
-	"rustls-tls",
-] }
-librqbit = "8.1.1"
-librqbit-core = "5.0.0"
 tantivy = "0.25.0"
 
 # Async & Parallelism
 tokio = { version = "1.44.1", features = ["full"] }
-tokio-stream = { version = "0.1.17" }
 
 # CLI & logging
 tracing = "0.1.41"
@@ -91,17 +83,10 @@ tracing-indicatif = "0.3.13"
 anstyle = "1.0.10"
 clap = { version = "4.5.37", features = ["derive"] }
 
-# Extra types
-url = { version = "2.5.4", features = ["serde"] }
-
 # Serialization & formats
 serde = { version = "1.0.219", features = ["derive"] }
 serde_json = "1.0.140"
-blake3 = "1.8.2"
-flate2 = "1.1.2"
 base64 = "0.22.1"
-binrw = "0.15.0"
-brotli = "8.0.2"
 toml = "0.9.8"
 jsonpath-rust = "1.0.4"
 sha2 = "0.11.0-rc.3"
@@ -110,15 +95,11 @@ sha2 = "0.11.0-rc.3"
 thiserror = "2.0.12"
 anyhow = "1.0.97"
 itertools = "0.14.0"
-tempfile = "3.21.0"
 signal-hook = "0.3.18"
-parking_lot = "0.12.5"
-lru = "0.16.1"
-rayon = "1.11.0"
 rand = "0.9.2"
-regex = "1.12.2"
 strum = { version = "0.27.2", features = ["derive"] }
 walkdir = "2.5.0"
 mime = "0.3.17"
 paste = "1.0.15"
 smartstring = "1.0.1"
+chrono = "0.4.43"