feat: Rebrand Polkadot/Substrate references to PezkuwiChain

This commit systematically rebrands various references from Parity Technologies'
Polkadot/Substrate ecosystem to PezkuwiChain within the kurdistan-sdk.

Key changes include:
- Updated external repository URLs (zombienet-sdk, parity-db, parity-scale-codec, wasm-instrument) to point to pezkuwichain forks.
- Modified internal documentation and code comments to reflect PezkuwiChain naming and structure.
- Replaced direct references to  with  or specific paths within the  for XCM, Pezkuwi, and other modules.
- Cleaned up deprecated  issue and PR references in various  and  files, particularly in  and  modules.
- Adjusted image and logo URLs in documentation to point to PezkuwiChain assets.
- Removed or rephrased comments related to external Polkadot/Substrate PRs and issues.

This is a significant step towards fully customizing the SDK for the PezkuwiChain ecosystem.

bizinikiwi/client/rpc-api/src/mixnet/error.rs

@@ -0,0 +1,48 @@
+// This file is part of Bizinikiwi.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+//! Mixnet RPC module errors.
+
+use jsonrpsee::types::error::{ErrorObject, ErrorObjectOwned};
+use pezsc_mixnet::{PostErr, RemoteErr, TopologyErr};
+
+/// Mixnet RPC error type.
+pub struct Error(pub pezsc_mixnet::Error);
+
+/// Base code for all mixnet errors.
+const BASE_ERROR: i32 = crate::error::base::MIXNET;
+
+impl From<Error> for ErrorObjectOwned {
+	fn from(err: Error) -> Self {
+		let code = match err.0 {
+			pezsc_mixnet::Error::ServiceUnavailable => BASE_ERROR + 1,
+			pezsc_mixnet::Error::NoReply => BASE_ERROR + 2,
+			pezsc_mixnet::Error::BadReply => BASE_ERROR + 3,
+			pezsc_mixnet::Error::Post(PostErr::TooManyFragments) => BASE_ERROR + 101,
+			pezsc_mixnet::Error::Post(PostErr::SessionMixnodesNotKnown(_)) => BASE_ERROR + 102,
+			pezsc_mixnet::Error::Post(PostErr::SessionDisabled(_)) => BASE_ERROR + 103,
+			pezsc_mixnet::Error::Post(PostErr::Topology(TopologyErr::NoConnectedGatewayMixnodes)) =>
+				BASE_ERROR + 151,
+			pezsc_mixnet::Error::Post(PostErr::Topology(_)) => BASE_ERROR + 150,
+			pezsc_mixnet::Error::Post(_) => BASE_ERROR + 100,
+			pezsc_mixnet::Error::Remote(RemoteErr::Other(_)) => BASE_ERROR + 200,
+			pezsc_mixnet::Error::Remote(RemoteErr::Decode(_)) => BASE_ERROR + 201,
+		};
+		ErrorObject::owned(code, err.0.to_string(), None::<()>)
+	}
+}

bizinikiwi/client/rpc-api/src/mixnet/mod.rs

@@ -0,0 +1,32 @@
+// This file is part of Bizinikiwi.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+//! Bizinikiwi mixnet API.
+
+pub mod error;
+
+use error::Error;
+use jsonrpsee::proc_macros::rpc;
+use pezsp_core::Bytes;
+
+#[rpc(client, server)]
+pub trait MixnetApi {
+	/// Submit encoded extrinsic over the mixnet for inclusion in block.
+	#[method(name = "mixnet_submitExtrinsic")]
+	async fn submit_extrinsic(&self, extrinsic: Bytes) -> Result<(), Error>;
+}