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_app_again.py

@@ -0,0 +1,27 @@
+with open("/home/oib/windsurf/aitbc/apps/blockchain-node/src/aitbc_chain/app.py", "r") as f:
+    content = f.read()
+
+content = content.replace(
+    """    _app_logger.info("Blockchain node started", extra={"chain_id": settings.chain_id})""",
+    """    _app_logger.info("Blockchain node started", extra={"supported_chains": settings.supported_chains})"""
+)
+
+content = content.replace(
+    """    @metrics_router.get("/health", tags=["health"], summary="Health check")
+    async def health() -> dict:
+        return {
+            "status": "ok",
+            "chain_id": settings.chain_id,
+            "proposer_id": settings.proposer_id,
+        }""",
+    """    @metrics_router.get("/health", tags=["health"], summary="Health check")
+    async def health() -> dict:
+        return {
+            "status": "ok",
+            "supported_chains": [c.strip() for c in settings.supported_chains.split(",") if c.strip()],
+            "proposer_id": settings.proposer_id,
+        }"""
+)
+
+with open("/home/oib/windsurf/aitbc/apps/blockchain-node/src/aitbc_chain/app.py", "w") as f:
+    f.write(content)