docs: enhance Ollama GPU test workflow, reorganize project structure, and fix pytest warnings

- Upgrade ollama-gpu-provider skill to v2.0 with complete test workflow documentation
- Add comprehensive troubleshooting, monitoring commands, and CI/CD integration examples
- Update client.py default coordinator port from 8000 to 18000
- Clear currentissue.md and add usage guidelines for issue tracking
- Create dev-utils/ directory and move aitbc-pythonpath.pth from root
- Create docs/guides/ and docs

home/client/client_wallet.json

@@ -1,6 +1,6 @@
 {
   "address": "aitbc18f75b7eb7e2ecc7567b6",
-  "balance": 9365.0,
+  "balance": 9364.94794,
   "transactions": [
     {
       "type": "earn",
@@ -32,6 +32,12 @@
       "amount": -25.0,
       "description": "Payment for job e3b3fd7ddd684270932cfd8107771e81",
       "timestamp": "2026-01-23T15:09:41.183693"
+    },
+    {
+      "type": "spend",
+      "amount": -0.05206,
+      "description": "Payment for job 44c27e1a02e74a5584691eacf9e06e29",
+      "timestamp": "2026-01-29T12:56:26.896360"
     }
   ],
   "created_at": "2026-01-23T14:55:27.329386"