feat: add 12 new agent-driven databases, migrate GaussDB to agent

Add H2, Snowflake, Trino, Hive, DB2, Informix, Neo4j, Cassandra,
BigQuery, Apache Kylin, SunDB as new agent-driven database types.
Migrate GaussDB from native rust-gaussdb to JDBC agent.

Remove rust-gaussdb dependency. Total agent-driven databases: 17.

src/components/connection/ConnectionDialog.vue

@@ -184,6 +184,17 @@ const driverProfiles: Record<
     icon: "cockroachdb",
   },
   dm: { type: "dameng", port: 5236, user: "SYSDBA", label: "DM (Dameng)", icon: "dm" },
+  h2: { type: "h2", port: 9092, user: "sa", label: "H2", icon: "h2" },
+  snowflake: { type: "snowflake", port: 443, user: "", label: "Snowflake", icon: "snowflake" },
+  trino: { type: "trino", port: 8080, user: "", label: "Trino", icon: "trino" },
+  hive: { type: "hive", port: 10000, user: "", label: "Apache Hive", icon: "hive" },
+  db2: { type: "db2", port: 50000, user: "db2inst1", label: "IBM DB2", icon: "db2" },
+  informix: { type: "informix", port: 9088, user: "informix", label: "Informix", icon: "informix" },
+  neo4j: { type: "neo4j", port: 7687, user: "neo4j", label: "Neo4j", icon: "neo4j" },
+  cassandra: { type: "cassandra", port: 9042, user: "cassandra", label: "Cassandra", icon: "cassandra" },
+  bigquery: { type: "bigquery", port: 443, user: "", label: "BigQuery", icon: "bigquery" },
+  kylin: { type: "kylin", port: 7070, user: "ADMIN", label: "Apache Kylin", icon: "kylin" },
+  sundb: { type: "sundb", port: 22000, user: "root", label: "SunDB", icon: "sundb" },
   jdbc: { type: "jdbc", port: 0, user: "", label: "JDBC", icon: "jdbc" },
   tdengine: { type: "mysql", port: 6030, user: "root", label: "TDengine", icon: "tdengine" },
   custom_mysql: {
@@ -362,6 +373,17 @@ const iconTypeMap: Record<string, string> = {
   cockroachdb: "cockroachdb",
   tdengine: "tdengine",
   dm: "dm",
+  h2: "h2",
+  snowflake: "snowflake",
+  trino: "trino",
+  hive: "hive",
+  db2: "db2",
+  informix: "informix",
+  neo4j: "neo4j",
+  cassandra: "cassandra",
+  bigquery: "bigquery",
+  kylin: "kylin",
+  sundb: "sundb",
   jdbc: "jdbc",
   custom_mysql: "mysql",
   custom_postgres: "postgres",
@@ -393,6 +415,17 @@ const dbOptions = [
   { value: "vastbase", label: "Vastbase" },
   { value: "redshift", label: "Redshift" },
   { value: "cockroachdb", label: "CockroachDB" },
+  { value: "h2", label: "H2" },
+  { value: "snowflake", label: "Snowflake" },
+  { value: "trino", label: "Trino" },
+  { value: "hive", label: "Hive" },
+  { value: "db2", label: "DB2" },
+  { value: "informix", label: "Informix" },
+  { value: "neo4j", label: "Neo4j" },
+  { value: "cassandra", label: "Cassandra" },
+  { value: "bigquery", label: "BigQuery" },
+  { value: "kylin", label: "Kylin" },
+  { value: "sundb", label: "SunDB" },
   { value: "jdbc", label: "JDBC" },
   { value: "custom_mysql", label: "Custom (MySQL)" },
   { value: "custom_postgres", label: "Custom (PostgreSQL)" },

src/components/icons/DatabaseIcon.vue

@@ -31,6 +31,8 @@ const assetIcons: Record<string, string> = {
   hive: "hive",
   apache_kylin: "apache_kylin",
   sundb: "sundb",
+  trino: "presto",
+  kylin: "apache_kylin",
   cockroachdb: "cockroachdb",
   db2: "db2",
   bigquery: "bigquery",