feat: all key wallet/key wallet manager and key wallet ffi tests passing (#114)

* fixes

* fixes

* fixes

* fixes

* key-wallet passing

* key-wallet is good

* more work

* more work

* more work

* cleaned everything up

* cleaned everything up

Author: QuantumExplorer

CLAUDE.md

@@ -29,7 +29,7 @@ rust-dashcore is a Rust implementation of the Dash cryptocurrency protocol libra
 - `dash-spv-ffi/` - C-compatible FFI bindings for SPV client
 
 ### Wallet & Keys
-- `key-wallet/` - HD wallet implementation
+- `key-wallet/` - Comprehensive HD wallet implementation with multi-account support, address pools, and transaction management (see key-wallet/CLAUDE.md for detailed architecture)
 - `key-wallet-ffi/` - C-compatible FFI bindings for wallet functionality
 
 ### RPC & Integration

Cargo.toml

@@ -7,6 +7,8 @@ version = "0.39.6"
 
 [patch.crates-io]
 dashcore_hashes = { path = "hashes" }
+# Use fixed version of elliptic-curve-tools with DefaultIsZeroes trait bound
+elliptic-curve-tools = { git = "https://github.com/mikelodder7/elliptic-curve-tools", branch = "main" }
 
 [profile.release]
 # Default to unwinding for most crates