docs: Ledger Live integration, contract deploy learnings, NEXT_STEPS updates

- ADD_CHAIN138_TO_LEDGER_LIVE: Ledger form done; public code review repo bis-innovations/LedgerLive; init/push commands
- CONTRACT_DEPLOYMENT_RUNBOOK: Chain 138 gas price 1 gwei, 36-addr check, TransactionMirror workaround
- CONTRACT_*: AddressMapper, MirrorManager deployed 2026-02-12; 36-address on-chain check
- NEXT_STEPS_FOR_YOU: Ledger done; steps completable now (no LAN); run-completable-tasks-from-anywhere
- MASTER_INDEX, OPERATOR_OPTIONAL, SMART_CONTRACTS_INVENTORY_SIMPLE: updates
- LEDGER_BLOCKCHAIN_INTEGRATION_COMPLETE: bis-innovations/LedgerLive reference

Co-authored-by: Cursor <cursoragent@cursor.com>

token-lists/chainlists/chain-138.json

@@ -3,7 +3,9 @@
   "chain": "DBIS",
   "rpc": [
     "https://rpc-http-pub.d-bis.org",
-    "https://rpc-http-prv.d-bis.org"
+    "https://rpc-http-prv.d-bis.org",
+    "https://rpc.defi-oracle.io",
+    "wss://wss.defi-oracle.io"
   ],
   "faucets": [],
   "nativeCurrency": {