docs: update CLI command syntax across workflow documentation

- Updated marketplace commands: `marketplace --action` → `market` subcommands
- Updated wallet commands: direct flags → `wallet` subcommands
- Updated AI commands: `ai-submit`, `ai-status` → `ai submit`, `ai status`
- Updated blockchain commands: `chain` → `blockchain info`
- Standardized command structure across all workflow files
- Affected files: MULTI_NODE_MASTER_INDEX.md, TEST_MASTER_INDEX.md, multi-node-blockchain-marketplace

dev/tests/test_scenario_a.sh

@@ -27,7 +27,7 @@ fi
 echo ""
 echo "📋 Step 3: Verify aitbc marketplace connectivity"
 echo "=========================================="
-curl -s http://127.0.0.1:18000/v1/health | jq .
+curl -s http://127.0.0.1:8000/v1/health | jq .
 
 echo ""
 echo "📋 Step 4: Register miner1 with aitbc marketplace"
@@ -42,13 +42,13 @@ aitbc marketplace gpu register \
   --price-per-hour "0.001" \
   --models "gemma3:1b,lauchacarro/qwen2.5-translator:latest" \
   --endpoint "http://localhost:11434" \
-  --marketplace-url "http://127.0.0.1:18000"
+  --marketplace-url "http://127.0.0.1:8000"
 
 echo ""
 echo "📋 Step 5: Verify registration on aitbc"
 echo "=========================================="
 sleep 5
-curl -s http://127.0.0.1:18000/v1/marketplace/offers | jq '.[] | select(.miner_id == "miner1")'
+curl -s http://127.0.0.1:8000/v1/marketplace/offers | jq '.[] | select(.miner_id == "miner1")'
 
 echo ""
 echo "📋 Step 6: Test direct GPU service"
@@ -60,7 +60,7 @@ curl -X POST http://localhost:11434/api/generate \
 echo ""
 echo "📋 Step 7: Test GPU service via marketplace proxy"
 echo "=========================================="
-curl -X POST http://127.0.0.1:18000/v1/gpu/inference \
+curl -X POST http://127.0.0.1:8000/v1/gpu/inference \
   -H "Content-Type: application/json" \
   -d '{"miner_id": "miner1", "model": "gemma3:1b", "prompt": "What is blockchain via proxy?"}' | jq .