```

chore: enhance .gitignore and remove obsolete documentation files

- Reorganize .gitignore with categorized sections for better maintainability
- Add comprehensive ignore patterns for Python, Node.js, databases, logs, and build artifacts
- Add project-specific ignore rules for coordinator, explorer, and deployment files
- Remove outdated documentation: BITCOIN-WALLET-SETUP.md, LOCAL_ASSETS_SUMMARY.md, README-CONTAINER-DEPLOYMENT.md, README-DOMAIN-DEPLOYMENT.md
```

apps/explorer-web/public/mock/receipts.json

@@ -1,18 +1,20 @@
-[
-  {
-    "jobId": "job-0001",
-    "receiptId": "rcpt-123",
-    "miner": "miner-alpha",
-    "coordinator": "coordinator-001",
-    "issuedAt": "2025-09-27T01:52:22Z",
-    "status": "Attested"
-  },
-  {
-    "jobId": "job-0002",
-    "receiptId": "rcpt-124",
-    "miner": "miner-beta",
-    "coordinator": "coordinator-001",
-    "issuedAt": "2025-09-27T01:45:18Z",
-    "status": "Pending"
-  }
-]
+{
+  "items": [
+    {
+      "jobId": "job-0001",
+      "receiptId": "rcpt-123",
+      "miner": "miner-alpha",
+      "coordinator": "coordinator-001",
+      "issuedAt": "2025-09-27T01:52:22Z",
+      "status": "Attested"
+    },
+    {
+      "jobId": "job-0002",
+      "receiptId": "rcpt-124",
+      "miner": "miner-beta",
+      "coordinator": "coordinator-001",
+      "issuedAt": "2025-09-27T01:45:18Z",
+      "status": "Pending"
+    }
+  ]
+}