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/state/error.rs

@@ -0,0 +1,68 @@
+// 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/>.
+
+//! State RPC errors.
+
+use jsonrpsee::types::error::{ErrorObject, ErrorObjectOwned};
+
+/// State RPC Result type.
+pub type Result<T> = std::result::Result<T, Error>;
+
+/// State RPC errors.
+#[derive(Debug, thiserror::Error)]
+pub enum Error {
+	/// Client error.
+	#[error("Client error: {}", .0)]
+	Client(#[from] Box<dyn std::error::Error + Send + Sync>),
+	/// Provided block range couldn't be resolved to a list of blocks.
+	#[error("Cannot resolve a block range ['{:?}' ... '{:?}]. {}", .from, .to, .details)]
+	InvalidBlockRange {
+		/// Beginning of the block range.
+		from: String,
+		/// End of the block range.
+		to: String,
+		/// Details of the error message.
+		details: String,
+	},
+	/// Provided count exceeds maximum value.
+	#[error("count exceeds maximum value. value: {}, max: {}", .value, .max)]
+	InvalidCount {
+		/// Provided value
+		value: u32,
+		/// Maximum allowed value
+		max: u32,
+	},
+	/// Call to an unsafe RPC was denied.
+	#[error(transparent)]
+	UnsafeRpcCalled(#[from] crate::policy::UnsafeRpcError),
+}
+
+/// Base code for all state errors.
+const BASE_ERROR: i32 = crate::error::base::STATE;
+
+impl From<Error> for ErrorObjectOwned {
+	fn from(e: Error) -> ErrorObjectOwned {
+		match e {
+			Error::InvalidBlockRange { .. } =>
+				ErrorObject::owned(BASE_ERROR + 1, e.to_string(), None::<()>),
+			Error::InvalidCount { .. } =>
+				ErrorObject::owned(BASE_ERROR + 2, e.to_string(), None::<()>),
+			e => ErrorObject::owned(BASE_ERROR + 3, e.to_string(), None::<()>),
+		}
+	}
+}