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/primitives/state-machine/src/overlayed_changes/offchain.rs

@@ -0,0 +1,133 @@
+// This file is part of Bizinikiwi.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Overlayed changes for offchain indexing.
+
+use super::changeset::OverlayedMap;
+use alloc::vec::Vec;
+use pezsp_core::offchain::OffchainOverlayedChange;
+
+/// In-memory storage for offchain workers recoding changes for the actual offchain storage
+/// implementation.
+#[derive(Debug, Clone, Default)]
+pub struct OffchainOverlayedChanges(OverlayedMap<(Vec<u8>, Vec<u8>), OffchainOverlayedChange>);
+
+/// Item for iterating over offchain changes.
+///
+/// First element i a tuple of `(prefix, key)`, second element ist the actual change
+/// (remove or set value).
+type OffchainOverlayedChangesItem<'i> = (&'i (Vec<u8>, Vec<u8>), &'i OffchainOverlayedChange);
+
+/// Iterator over offchain changes, owned memory version.
+type OffchainOverlayedChangesItemOwned = ((Vec<u8>, Vec<u8>), OffchainOverlayedChange);
+
+impl OffchainOverlayedChanges {
+	/// Consume the offchain storage and iterate over all key value pairs.
+	pub fn into_iter(self) -> impl Iterator<Item = OffchainOverlayedChangesItemOwned> {
+		self.0.into_changes().map(|kv| (kv.0, kv.1.into_value()))
+	}
+
+	/// Iterate over all key value pairs by reference.
+	pub fn iter(&mut self) -> impl Iterator<Item = OffchainOverlayedChangesItem<'_>> {
+		self.0.changes().map(|kv| (kv.0, kv.1.value_ref()))
+	}
+
+	/// Drain all elements of changeset.
+	pub fn drain(&mut self) -> impl Iterator<Item = OffchainOverlayedChangesItemOwned> {
+		core::mem::take(self).into_iter()
+	}
+
+	/// Remove a key and its associated value from the offchain database.
+	pub fn remove(&mut self, prefix: &[u8], key: &[u8]) {
+		let _ = self.0.set_offchain(
+			(prefix.to_vec(), key.to_vec()),
+			OffchainOverlayedChange::Remove,
+			None,
+		);
+	}
+
+	/// Set the value associated with a key under a prefix to the value provided.
+	pub fn set(&mut self, prefix: &[u8], key: &[u8], value: &[u8]) {
+		let _ = self.0.set_offchain(
+			(prefix.to_vec(), key.to_vec()),
+			OffchainOverlayedChange::SetValue(value.to_vec()),
+			None,
+		);
+	}
+
+	/// Obtain a associated value to the given key in storage with prefix.
+	pub fn get(&mut self, prefix: &[u8], key: &[u8]) -> Option<OffchainOverlayedChange> {
+		let key = (prefix.to_vec(), key.to_vec());
+		self.0.get(&key).map(|entry| entry.value_ref()).cloned()
+	}
+
+	/// Reference to inner change set.
+	pub fn overlay(&self) -> &OverlayedMap<(Vec<u8>, Vec<u8>), OffchainOverlayedChange> {
+		&self.0
+	}
+
+	/// Mutable reference to inner change set.
+	pub fn overlay_mut(
+		&mut self,
+	) -> &mut OverlayedMap<(Vec<u8>, Vec<u8>), OffchainOverlayedChange> {
+		&mut self.0
+	}
+}
+
+#[cfg(test)]
+mod test {
+	use super::*;
+	use pezsp_core::offchain::STORAGE_PREFIX;
+
+	#[test]
+	fn test_drain() {
+		let mut ooc = OffchainOverlayedChanges::default();
+		ooc.set(STORAGE_PREFIX, b"kkk", b"vvv");
+		let drained = ooc.drain().count();
+		assert_eq!(drained, 1);
+		let leftover = ooc.iter().count();
+		assert_eq!(leftover, 0);
+
+		ooc.set(STORAGE_PREFIX, b"a", b"v");
+		ooc.set(STORAGE_PREFIX, b"b", b"v");
+		ooc.set(STORAGE_PREFIX, b"c", b"v");
+		ooc.set(STORAGE_PREFIX, b"d", b"v");
+		ooc.set(STORAGE_PREFIX, b"e", b"v");
+		assert_eq!(ooc.iter().count(), 5);
+	}
+
+	#[test]
+	fn test_accumulated_set_remove_set() {
+		let mut ooc = OffchainOverlayedChanges::default();
+		ooc.set(STORAGE_PREFIX, b"ppp", b"qqq");
+		ooc.remove(STORAGE_PREFIX, b"ppp");
+		// keys are equiv, so it will overwrite the value and the overlay will contain
+		// one item
+		assert_eq!(ooc.iter().count(), 1);
+
+		ooc.set(STORAGE_PREFIX, b"ppp", b"rrr");
+		let mut iter = ooc.into_iter();
+		assert_eq!(
+			iter.next(),
+			Some((
+				(STORAGE_PREFIX.to_vec(), b"ppp".to_vec()),
+				OffchainOverlayedChange::SetValue(b"rrr".to_vec())
+			))
+		);
+		assert_eq!(iter.next(), None);
+	}
+}