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/client/consensus/common/src/import_queue.rs

@@ -0,0 +1,77 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// This file is part of Pezcumulus.
+// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
+
+// Pezcumulus 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.
+
+// Pezcumulus 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 Pezcumulus. If not, see <https://www.gnu.org/licenses/>.
+
+//! (unstable) Composable utilities for constructing import queues for teyrchains.
+//!
+//! Unlike standalone chains, teyrchains have the requirement that all consensus logic
+//! must be checked within the runtime. This property means that work which is normally
+//! done in the import queue per-block, such as checking signatures, quorums, and whether
+//! inherent extrinsics were constructed faithfully do not need to be done, per se.
+//!
+//! It may seem that it would be beneficial for the client to do these checks regardless,
+//! but in practice this means that clients would just reject blocks which are _valid_ according
+//! to their Teyrchain Validation Function, which is the ultimate source of consensus truth.
+//!
+//! However, teyrchain runtimes expose two different access points for executing blocks
+//! in full nodes versus executing those blocks in the teyrchain validation environment.
+//! At the time of writing, the inherent and consensus checks in most Pezcumulus runtimes
+//! are only performed during teyrchain validation, not full node block execution.
+//!
+//! See <https://github.com/pezkuwichain/kurdistan-sdk/issues/91> for details.
+
+use pezsp_consensus::error::Error as ConsensusError;
+use pezsp_runtime::traits::Block as BlockT;
+
+use pezsc_consensus::{
+	block_import::{BlockImport, BlockImportParams},
+	import_queue::{BasicQueue, Verifier},
+};
+
+use crate::TeyrchainBlockImportMarker;
+
+/// A [`Verifier`] for blocks which verifies absolutely nothing.
+///
+/// This should only be used when the runtime is responsible for checking block seals and inherents.
+pub struct VerifyNothing;
+
+#[async_trait::async_trait]
+impl<Block: BlockT> Verifier<Block> for VerifyNothing {
+	async fn verify(
+		&self,
+		params: BlockImportParams<Block>,
+	) -> Result<BlockImportParams<Block>, String> {
+		Ok(params)
+	}
+}
+
+/// An import queue which does no verification.
+///
+/// This should only be used when the runtime is responsible for checking block seals and inherents.
+pub fn verify_nothing_import_queue<Block: BlockT, I>(
+	block_import: I,
+	spawner: &impl pezsp_core::traits::SpawnEssentialNamed,
+	registry: Option<&prometheus_endpoint::Registry>,
+) -> BasicQueue<Block>
+where
+	I: BlockImport<Block, Error = ConsensusError>
+		+ TeyrchainBlockImportMarker
+		+ Send
+		+ Sync
+		+ 'static,
+{
+	BasicQueue::new(VerifyNothing, Box::new(block_import), None, spawner, registry)
+}