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>

.gitea/workflows/deploy-to-phoenix.yml

@@ -0,0 +1,20 @@
+name: Deploy to Phoenix
+
+on:
+  push:
+    branches: [main, master]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Trigger Phoenix deployment
+        run: |
+          curl -sSf -X POST "${{ secrets.PHOENIX_DEPLOY_URL }}" \
+            -H "Authorization: Bearer ${{ secrets.PHOENIX_DEPLOY_TOKEN }}" \
+            -H "Content-Type: application/json" \
+            -d "{\"repo\":\"${{ gitea.repository }}\",\"sha\":\"${{ gitea.sha }}\",\"branch\":\"${{ gitea.ref_name }}\"}"
+        continue-on-error: true