fix: use u16 for NetUidStorageIndex in hash computation

Subtensor's NetUidStorageIndex is a newtype over u16, not u32.
SCALE encoding: u16 = 2 bytes vs u32 = 4 bytes.
This was the root cause of InvalidRevealCommitHashNotMatch errors.

Updated bittensor-rs to 52e9c1f with the same fix.

Author: EchoBT

Cargo.lock

@@ -30,7 +30,7 @@ license = "MIT"
 
 [workspace.dependencies]
 # Bittensor
-bittensor-rs = { git = "https://github.com/CortexLM/bittensor-rs", rev = "32c6bfa" }
+bittensor-rs = { git = "https://github.com/CortexLM/bittensor-rs", rev = "52e9c1f" }
 
 # Async runtime
 tokio = { version = "1.40", features = ["full", "sync", "macros", "rt-multi-thread"] }

Cargo.toml

@@ -247,13 +247,15 @@ pub fn compute_subtensor_hash(
     // In subtensor: netuid_index = get_mechanism_storage_index(netuid, mecid)
     // GLOBAL_MAX_SUBNET_COUNT = 4096
     // Formula: mecid * 4096 + netuid
-    let mecid = mechanism_id.unwrap_or(0) as u32;
-    let netuid_index: u32 = mecid * 4096 + (netuid as u32);
+    // IMPORTANT: NetUidStorageIndex is u16 in subtensor, not u32!
+    let mecid = mechanism_id.unwrap_or(0) as u16;
+    let netuid_index: u16 = mecid.saturating_mul(4096).saturating_add(netuid);
 
     // Create SCALE-encodable tuple matching subtensor's format
+    // NetUidStorageIndex is a newtype over u16, so it SCALE encodes as u16
     let data = (
         account,         // [u8; 32] - AccountId
-        netuid_index,    // u32 - NetUidStorageIndex
+        netuid_index,    // u16 - NetUidStorageIndex (NOT u32!)
         uids.to_vec(),   // Vec<u16>
         values.to_vec(), // Vec<u16>
         salt.to_vec(),   // Vec<u16>