fix: correct Cargo.toml syntax (hex dependency on its own line)

Cargo.toml

@@ -6,38 +6,37 @@ description = "Zero-trust medical AI triage gateway – AMD Hackathon 2026"
 
 [dependencies]
 tokio = { version = "1", features = ["full"] }
-axum = { version = "0.7", features = ["macros"] }
-tower = "0.4"
-tower-http = { version = "0.5", features = ["trace", "cors"] }
+axum = { version = "0.8", features = ["macros", "tower-http"] }
+tower-http = { version = "0.6", features = ["trace", "cors"] }
 
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 
 tracing = "0.1"
-tracing-subscriber = { version = "0.3", features = ["env-filter", "json"] }
+tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 anyhow = "1.0"
 
-# Candle — CPU only for now
+# Candle + ROCm
 candle-core = "0.8"
 candle-nn = "0.8"
 candle-transformers = "0.8"
 hf-hub = "0.3"
 
-# PII Shield
-
+# PII Shield + regex
+pii = "0.4"
 regex = "1"
 
-# Web3
-cid = "0.11"                        # re-exports multihash, we'll use that
-sha2 = "0.10"                       # manual hashing for CID
-alloy = { version = "0.7", features = ["full"] }
+# Web3 + proof
+cid = "0.11"
+multihash = "0.19"
+alloy = { version = "0.7", features = ["full", "reqwest", "hyper"] }
 alloy-provider = "0.7"
 alloy-signer-local = "0.7"
 
-# Environment
-dotenvy = "0.15"
+# Proof hash
+hex = "0.4"
 
 [profile.release]
 lto = true
 codegen-units = 1
-opt-level = 3hex = "0.4"
+opt-level = 3