fix: increase VARCHAR sizes for direction, eth_type, and ip_proto in packets table for better data handling

setup_database.sh

@@ -53,12 +53,12 @@ CREATE TABLE IF NOT EXISTS packets (
 
     -- Interface metadata
     iface VARCHAR(64),
-    direction VARCHAR(16),
+    direction VARCHAR(64),
 
     -- Ethernet
     src_mac MACADDR,
     dst_mac MACADDR,
-    eth_type VARCHAR(16),
+    eth_type VARCHAR(64),
 
     -- VLAN
     vlan_id INTEGER,
@@ -66,7 +66,7 @@ CREATE TABLE IF NOT EXISTS packets (
     -- IP layer
     src_ip INET,
     dst_ip INET,
-    ip_proto VARCHAR(32),
+    ip_proto VARCHAR(64),
 
     -- Transport layer
     src_port INTEGER,