fix: resolve all broken links for check-links.yml CI

## Changes

### High Impact Fixes (RED)
- Fix radium git URL (https://https:// → github.com/paritytech/radium-0.7-fork)
- Fix rustc-rv32e-toolchain URL (nickvidal → paritytech)
- Fix chainextension-registry URL (nickvidal/substrate-contracts-node → paritytech/chainextension-registry)

### Medium Impact Fixes (YELLOW)
- Fix docs.rs ChargeAssetTxPayment link (frame-system → pallet-asset-tx-payment)
- Fix pezkuwichain.github.io → paritytech.github.io for:
  - json-rpc-interface-spec
  - substrate docs
  - try-runtime-cli
- Fix subxt issue reference (pezkuwichain → paritytech)

### Zero Impact Excludes (GREEN)
- Add 40+ defunct chain websites to lychee exclude list
- Add commit-specific GitHub URLs to exclude (cannot migrate)
- Add rate-limited/403 sites to exclude

### Documentation
- Refactor .claude/domains_repositories.md structure
- Add tracking issue mapping and creation scripts
- Update external repo links to use original URLs

Result: 🔍 9610 Total ✅ 6747 OK 🚫 0 Errors

bizinikiwi/pezframe/balances/src/lib.rs

@@ -303,7 +303,7 @@ pub mod pezpallet {
 
 		/// The ID type for reserves.
 		///
-		/// Use of reserves is deprecated in favour of holds. See `https://github.com/pezkuwichain/pezkuwi-sdk/issues/40/`
+		/// Use of reserves is deprecated in favour of holds. See `https://github.com/pezkuwichain/pezkuwi-sdk/issues/209/`
 		type ReserveIdentifier: Parameter + Member + MaxEncodedLen + Ord + Copy;
 
 		/// The ID type for freezes.
@@ -312,13 +312,13 @@ pub mod pezpallet {
 		/// The maximum number of locks that should exist on an account.
 		/// Not strictly enforced, but used for weight estimation.
 		///
-		/// Use of locks is deprecated in favour of freezes. See `https://github.com/pezkuwichain/pezkuwi-sdk/issues/40/`
+		/// Use of locks is deprecated in favour of freezes. See `https://github.com/pezkuwichain/pezkuwi-sdk/issues/209/`
 		#[pezpallet::constant]
 		type MaxLocks: Get<u32>;
 
 		/// The maximum number of named reserves that can exist on an account.
 		///
-		/// Use of reserves is deprecated in favour of holds. See `https://github.com/pezkuwichain/pezkuwi-sdk/issues/40/`
+		/// Use of reserves is deprecated in favour of holds. See `https://github.com/pezkuwichain/pezkuwi-sdk/issues/209/`
 		#[pezpallet::constant]
 		type MaxReserves: Get<u32>;
 
@@ -507,7 +507,7 @@ pub mod pezpallet {
 	/// Any liquidity locks on some account balances.
 	/// NOTE: Should only be accessed when setting, changing and freeing a lock.
 	///
-	/// Use of locks is deprecated in favour of freezes. See `https://github.com/pezkuwichain/pezkuwi-sdk/issues/40/`
+	/// Use of locks is deprecated in favour of freezes. See `https://github.com/pezkuwichain/pezkuwi-sdk/issues/209/`
 	#[pezpallet::storage]
 	pub type Locks<T: Config<I>, I: 'static = ()> = StorageMap<
 		_,
@@ -519,7 +519,7 @@ pub mod pezpallet {
 
 	/// Named reserves on some account balances.
 	///
-	/// Use of reserves is deprecated in favour of holds. See `https://github.com/pezkuwichain/pezkuwi-sdk/issues/40/`
+	/// Use of reserves is deprecated in favour of holds. See `https://github.com/pezkuwichain/pezkuwi-sdk/issues/209/`
 	#[pezpallet::storage]
 	pub type Reserves<T: Config<I>, I: 'static = ()> = StorageMap<
 		_,