fix: Complete snowbridge pezpallet rebrand and critical bug fixes

- snowbridge-pezpallet-* → pezsnowbridge-pezpallet-* (201 refs)
- pallet/ directories → pezpallet/ (4 locations)
- Fixed pezpallet.rs self-include recursion bug
- Fixed sc-chain-spec hardcoded crate name in derive macro
- Reverted .pezpallet_by_name() to .pallet_by_name() (subxt API)
- Added BizinikiwiConfig type alias for zombienet tests
- Deleted obsolete session state files

Verified: pezsnowbridge-pezpallet-*, pezpallet-staking,
pezpallet-staking-async, pezframe-benchmarking-cli all pass cargo check

pezbridges/relays/teyrchains/Cargo.toml

@@ -0,0 +1,36 @@
+[package]
+name = "teyrchains-relay"
+version = "0.1.0"
+authors.workspace = true
+edition.workspace = true
+license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
+repository.workspace = true
+publish = false
+description = "Pezkuwi SDK component: teyrchains relay"
+documentation = "https://docs.rs/teyrchains-relay"
+homepage = { workspace = true }
+
+[lints]
+workspace = true
+
+[dependencies]
+async-std = { workspace = true }
+async-trait = { workspace = true }
+futures = { workspace = true }
+relay-utils = { workspace = true }
+tracing = { workspace = true }
+
+# Bridge dependencies
+bp-pezkuwi-core = { workspace = true, default-features = true }
+relay-bizinikiwi-client = { workspace = true }
+
+[dev-dependencies]
+relay-bizinikiwi-client = { features = ["test-helpers"], workspace = true }
+pezsp-core = { workspace = true, default-features = true }
+
+[features]
+runtime-benchmarks = [
+  "bp-pezkuwi-core/runtime-benchmarks",
+  "relay-bizinikiwi-client/runtime-benchmarks",
+  "relay-utils/runtime-benchmarks",
+]