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>

ALL_MAINNET_DOCUMENTATION_INDEX.md

@@ -0,0 +1,151 @@
+# 📚 ALL Mainnet (651940) - Documentation Index
+
+**Last Updated**: 2026-01-26  
+**Status**: ✅ **ALL DOCUMENTATION UPDATED**
+
+---
+
+## 🎯 Quick Reference
+
+| Item | Value | Status |
+|------|-------|--------|
+| **Chain ID** | 651940 (0x9f2a4) | ✅ Verified |
+| **USDC Address** | `0xa95EeD79f84E6A0151eaEb9d441F9Ffd50e8e881` (AUSDC) | ✅ Verified |
+| **CCIP Support** | ❌ NOT SUPPORTED | ✅ Verified |
+| **LiFi Support** | ❌ NOT SUPPORTED | ✅ Verified |
+| **Bridge Adapter** | AlltraAdapter | ✅ Ready |
+
+---
+
+## 📖 Master Documentation
+
+### Primary Documents
+
+1. **[ALL_MAINNET_MASTER_DOCUMENTATION.md](ALL_MAINNET_MASTER_DOCUMENTATION.md)**
+   - Complete master reference
+   - Quick reference table
+   - Configuration values
+   - Routing strategy
+   - Deployment checklist
+
+2. **[docs/MASTER_INDEX.md](docs/MASTER_INDEX.md)** (integration and references)
+   - Full integration guide
+   - Verification results
+   - Configuration details
+   - Related documentation links
+
+3. **[ALL_MAINNET_INTEGRATION_COMPLETE.md](ALL_MAINNET_INTEGRATION_COMPLETE.md)**
+   - Complete integration summary
+   - All tasks completed
+   - Files updated
+   - Final status
+
+---
+
+## 📋 Detailed Documentation
+
+### Configuration
+
+- **[smom-dbis-138/docs/deployment/ALL_MAINNET_CONFIGURATION.md](smom-dbis-138/docs/deployment/ALL_MAINNET_CONFIGURATION.md)**
+  - Complete configuration guide
+  - Verification checklist
+  - Configuration values
+  - Naming conventions
+  - Telemetry labels
+
+### Routing
+
+- **[smom-dbis-138/docs/deployment/ALL_MAINNET_ROUTING_LOGIC.md](smom-dbis-138/docs/deployment/ALL_MAINNET_ROUTING_LOGIC.md)**
+  - Routing decision tree
+  - Inbound/outbound flows
+  - Implementation examples
+  - Error handling
+
+### Verification
+
+- **[smom-dbis-138/docs/deployment/ALL_MAINNET_VERIFICATION_COMPLETE.md](smom-dbis-138/docs/deployment/ALL_MAINNET_VERIFICATION_COMPLETE.md)**
+  - CCIP verification results
+  - LiFi verification results
+  - USDC verification results
+  - Configuration updates
+
+### Deployment
+
+- **[smom-dbis-138/docs/deployment/MULTI_CHAIN_DEPLOYMENT_GUIDE.md](smom-dbis-138/docs/deployment/MULTI_CHAIN_DEPLOYMENT_GUIDE.md)**
+  - ALL Mainnet deployment section
+  - Configuration needed
+  - Deployment steps
+
+---
+
+## 🔧 Code Files
+
+### Contracts
+- `smom-dbis-138/contracts/bridge/adapters/evm/AlltraAdapter.sol`
+  - Chain ID: 651940
+  - Chain Type: "EVM"
+  - Identifier: "ALL-Mainnet"
+
+### Configuration
+- `alltra-lifi-settlement/src/config/chains.ts`
+  - ALL_MAINNET configuration
+  - USDC: `0xa95EeD79f84E6A0151eaEb9d441F9Ffd50e8e881`
+  - Support flags: CCIP=false, LiFi=false
+
+### Services
+- `alltra-lifi-settlement/src/payments/lifi/lifi-routing.service.ts`
+  - LiFi support check added
+
+---
+
+## 🛠️ Scripts
+
+- `smom-dbis-138/scripts/verify-all-mainnet-usdc.sh`
+  - USDC verification helper
+
+- `smom-dbis-138/scripts/deployment/register-all-mainnet.s.sol`
+  - ChainRegistry registration script
+
+---
+
+## 📊 Updated README Files
+
+- ✅ `README.md` - Added ALL Mainnet section
+- ✅ `alltra-lifi-settlement/README.md` - Updated with ALL Mainnet info
+- ✅ `smom-dbis-138/README.md` - Added multi-chain support section
+
+---
+
+## ✅ Verification Summary
+
+| Component | Status | Details |
+|-----------|--------|---------|
+| Chain ID | ✅ Verified | 651940 |
+| CCIP | ✅ Verified | NOT SUPPORTED |
+| LiFi | ✅ Verified | NOT SUPPORTED |
+| USDC | ✅ Verified | `0xa95EeD79f84E6A0151eaEb9d441F9Ffd50e8e881` (AUSDC) |
+| Configuration | ✅ Complete | All files updated |
+| Documentation | ✅ Complete | All docs updated |
+
+---
+
+## 🎯 Key Points
+
+1. **ALL Mainnet** (chain 651940) ≠ **ALLTRA** (orchestration layer)
+2. **CCIP**: Not supported - use `AlltraAdapter`
+3. **LiFi**: Not supported - use internal routing
+4. **USDC**: Deployed - `0xa95EeD79f84E6A0151eaEb9d441F9Ffd50e8e881` (AUSDC)
+5. **Routing**: Uses `AlltraAdapter` for bridging operations
+
+---
+
+## 📚 Related Documentation
+
+- [Multi-Chain Deployment Guide](smom-dbis-138/docs/deployment/MULTI_CHAIN_DEPLOYMENT_GUIDE.md)
+- [Chain Registry](smom-dbis-138/contracts/registry/ChainRegistry.sol)
+- [Bridge Adapters](smom-dbis-138/contracts/bridge/adapters/)
+- [LiFi Integration](alltra-lifi-settlement/docs/ARCHITECTURE.md)
+
+---
+
+**All master documentation has been reviewed and updated with verified ALL Mainnet (651940) configuration.**