chore: remove configuration files and enhance blockchain explorer with advanced search, analytics, and export features

- Delete .aitbc.yaml.example CLI configuration template
- Delete .lycheeignore link checker exclusion rules
- Delete .nvmrc Node.js version specification
- Add advanced search panel with filters for address, amount range, transaction type, time range, and validator
- Add analytics dashboard with transaction volume, active addresses, and block time metrics
- Add Chart.js integration

dev/scripts/patch_poa_genesis_fixed.py

@@ -0,0 +1,13 @@
+with open("/home/oib/windsurf/aitbc/apps/blockchain-node/src/aitbc_chain/consensus/poa.py", "r") as f:
+    content = f.read()
+
+content = content.replace(
+    """            timestamp = datetime.utcnow()
+            block_hash = self._compute_block_hash(0, "0x00", timestamp)""",
+    """            # Use a deterministic genesis timestamp so all nodes agree on the genesis block hash
+            timestamp = datetime(2025, 1, 1, 0, 0, 0)
+            block_hash = self._compute_block_hash(0, "0x00", timestamp)"""
+)
+
+with open("/home/oib/windsurf/aitbc/apps/blockchain-node/src/aitbc_chain/consensus/poa.py", "w") as f:
+    f.write(content)