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/src/offchain/mod.rs

@@ -0,0 +1,101 @@
+// 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 offchain API.
+
+#[cfg(test)]
+mod tests;
+
+use self::error::Error;
+use jsonrpsee::{core::async_trait, Extensions};
+use parking_lot::RwLock;
+use pezsc_rpc_api::check_if_safe;
+/// Re-export the API for backward compatibility.
+pub use pezsc_rpc_api::offchain::*;
+use pezsp_core::{
+	offchain::{OffchainStorage, StorageKind},
+	Bytes,
+};
+use std::sync::Arc;
+
+/// Offchain API
+#[derive(Debug)]
+pub struct Offchain<T: OffchainStorage> {
+	/// Offchain storage
+	storage: Arc<RwLock<T>>,
+}
+
+impl<T: OffchainStorage> Offchain<T> {
+	/// Create new instance of Offchain API.
+	pub fn new(storage: T) -> Self {
+		Offchain { storage: Arc::new(RwLock::new(storage)) }
+	}
+}
+
+#[async_trait]
+impl<T: OffchainStorage + 'static> OffchainApiServer for Offchain<T> {
+	fn set_local_storage(
+		&self,
+		ext: &Extensions,
+		kind: StorageKind,
+		key: Bytes,
+		value: Bytes,
+	) -> Result<(), Error> {
+		check_if_safe(ext)?;
+
+		let prefix = match kind {
+			StorageKind::PERSISTENT => pezsp_offchain::STORAGE_PREFIX,
+			StorageKind::LOCAL => return Err(Error::UnavailableStorageKind),
+		};
+		self.storage.write().set(prefix, &key, &value);
+		Ok(())
+	}
+
+	fn clear_local_storage(
+		&self,
+		ext: &Extensions,
+		kind: StorageKind,
+		key: Bytes,
+	) -> Result<(), Error> {
+		check_if_safe(ext)?;
+
+		let prefix = match kind {
+			StorageKind::PERSISTENT => pezsp_offchain::STORAGE_PREFIX,
+			StorageKind::LOCAL => return Err(Error::UnavailableStorageKind),
+		};
+		self.storage.write().remove(prefix, &key);
+
+		Ok(())
+	}
+
+	fn get_local_storage(
+		&self,
+		ext: &Extensions,
+		kind: StorageKind,
+		key: Bytes,
+	) -> Result<Option<Bytes>, Error> {
+		check_if_safe(ext)?;
+
+		let prefix = match kind {
+			StorageKind::PERSISTENT => pezsp_offchain::STORAGE_PREFIX,
+			StorageKind::LOCAL => return Err(Error::UnavailableStorageKind),
+		};
+
+		Ok(self.storage.read().get(prefix, &key).map(Into::into))
+	}
+}