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/client/executor/src/integration_tests/mod.rs

@@ -494,7 +494,7 @@ fn returns_mutable_static_bss(wasm_method: WasmExecutionMethod) {
 // If we didn't restore the wasm instance properly, on a trap the stack pointer would not be
 // returned to its initial value and thus the stack space is going to be leaked.
 //
-// See https://github.com/pezkuwichain/pezkuwi-sdk/issues/23 for details
+// See https://github.com/pezkuwichain/pezkuwi-sdk/issues/193 for details
 test_wasm_execution!(restoration_of_globals);
 fn restoration_of_globals(wasm_method: WasmExecutionMethod) {
 	// Allocate 32 pages (of 65536 bytes) which gives the runtime 2048KB of heap to operate on