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_router_sync.py

@@ -0,0 +1,29 @@
+with open("/home/oib/windsurf/aitbc/apps/blockchain-node/src/aitbc_chain/rpc/router.py", "r") as f:
+    content = f.read()
+
+# Fix sync_status chain_id undefined issue
+content = content.replace(
+    """@router.get("/syncStatus", summary="Get chain sync status")
+async def sync_status() -> Dict[str, Any]:""",
+    """@router.get("/syncStatus", summary="Get chain sync status")
+async def sync_status(chain_id: str = "ait-devnet") -> Dict[str, Any]:"""
+)
+
+# And fix import_block chain_id
+content = content.replace(
+    """async def import_block(request: ImportBlockRequest) -> Dict[str, Any]:""",
+    """async def import_block(request: ImportBlockRequest, chain_id: str = "ait-devnet") -> Dict[str, Any]:"""
+)
+
+# Replace cfg.chain_id with chain_id in import_block
+content = content.replace(
+    """    sync = ChainSync(
+        session_factory=session_scope,
+        chain_id=cfg.chain_id,""",
+    """    sync = ChainSync(
+        session_factory=session_scope,
+        chain_id=chain_id,"""
+)
+
+with open("/home/oib/windsurf/aitbc/apps/blockchain-node/src/aitbc_chain/rpc/router.py", "w") as f:
+    f.write(content)