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_mempool6.py

@@ -0,0 +1,26 @@
+with open("/home/oib/windsurf/aitbc/apps/blockchain-node/src/aitbc_chain/mempool.py", "r") as f:
+    content = f.read()
+
+# Fix InMemoryMempool methods to accept chain_id
+content = content.replace(
+    """    def list_transactions(self) -> List[PendingTransaction]:""",
+    """    def list_transactions(self, chain_id: str = "ait-devnet") -> List[PendingTransaction]:"""
+)
+
+content = content.replace(
+    """    def drain(self, max_count: int, max_bytes: int) -> List[PendingTransaction]:""",
+    """    def drain(self, max_count: int, max_bytes: int, chain_id: str = "ait-devnet") -> List[PendingTransaction]:"""
+)
+
+content = content.replace(
+    """    def remove(self, tx_hash: str) -> bool:""",
+    """    def remove(self, tx_hash: str, chain_id: str = "ait-devnet") -> bool:"""
+)
+
+content = content.replace(
+    """    def size(self) -> int:""",
+    """    def size(self, chain_id: str = "ait-devnet") -> int:"""
+)
+
+with open("/home/oib/windsurf/aitbc/apps/blockchain-node/src/aitbc_chain/mempool.py", "w") as f:
+    f.write(content)