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.

pezcumulus/pallets/xcm/src/lib.rs

@@ -0,0 +1,118 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// This file is part of Pezcumulus.
+// 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.
+
+//! Pallet for stuff specific to teyrchains' usage of XCM. Right now that's just the origin
+//! used by teyrchains when receiving `Transact` messages from other teyrchains or the Relay chain
+//! which must be natively represented.
+
+#![cfg_attr(not(feature = "std"), no_std)]
+
+use codec::{Decode, Encode};
+use cumulus_primitives_core::ParaId;
+pub use pallet::*;
+use scale_info::TypeInfo;
+use pezsp_runtime::{traits::BadOrigin, RuntimeDebug};
+use xcm::latest::{ExecuteXcm, Outcome};
+
+#[pezframe_support::pallet]
+pub mod pallet {
+	use super::*;
+	use pezframe_support::pezpallet_prelude::*;
+
+	#[pallet::pallet]
+	pub struct Pallet<T>(_);
+
+	/// The module configuration trait.
+	#[pallet::config]
+	pub trait Config: pezframe_system::Config {
+		/// The overarching event type.
+		#[allow(deprecated)]
+		type RuntimeEvent: From<Event<Self>> + IsType<<Self as pezframe_system::Config>::RuntimeEvent>;
+
+		type XcmExecutor: ExecuteXcm<Self::RuntimeCall>;
+	}
+
+	#[pallet::event]
+	pub enum Event<T: Config> {
+		/// Downward message is invalid XCM.
+		/// \[ id \]
+		InvalidFormat([u8; 32]),
+		/// Downward message is unsupported version of XCM.
+		/// \[ id \]
+		UnsupportedVersion([u8; 32]),
+		/// Downward message executed with the given outcome.
+		/// \[ id, outcome \]
+		ExecutedDownward([u8; 32], Outcome),
+	}
+
+	/// Origin for the teyrchains module.
+	#[derive(
+		PartialEq,
+		Eq,
+		Clone,
+		Encode,
+		Decode,
+		DecodeWithMemTracking,
+		TypeInfo,
+		RuntimeDebug,
+		MaxEncodedLen,
+	)]
+	#[pallet::origin]
+	pub enum Origin {
+		/// It comes from the (parent) relay chain.
+		Relay,
+		/// It comes from a (sibling) teyrchain.
+		SiblingTeyrchain(ParaId),
+	}
+
+	#[pallet::call]
+	impl<T: Config> Pallet<T> {}
+
+	impl From<ParaId> for Origin {
+		fn from(id: ParaId) -> Origin {
+			Origin::SiblingTeyrchain(id)
+		}
+	}
+	impl From<u32> for Origin {
+		fn from(id: u32) -> Origin {
+			Origin::SiblingTeyrchain(id.into())
+		}
+	}
+}
+
+/// Ensure that the origin `o` represents a sibling teyrchain.
+/// Returns `Ok` with the teyrchain ID of the sibling or an `Err` otherwise.
+pub fn ensure_sibling_para<OuterOrigin>(o: OuterOrigin) -> Result<ParaId, BadOrigin>
+where
+	OuterOrigin: Into<Result<Origin, OuterOrigin>>,
+{
+	match o.into() {
+		Ok(Origin::SiblingTeyrchain(id)) => Ok(id),
+		_ => Err(BadOrigin),
+	}
+}
+
+/// Ensure that the origin `o` represents is the relay chain.
+/// Returns `Ok` if it does or an `Err` otherwise.
+pub fn ensure_relay<OuterOrigin>(o: OuterOrigin) -> Result<(), BadOrigin>
+where
+	OuterOrigin: Into<Result<Origin, OuterOrigin>>,
+{
+	match o.into() {
+		Ok(Origin::Relay) => Ok(()),
+		_ => Err(BadOrigin),
+	}
+}