fix(imports): map DBeaver DB2 driver id to native db2 type

apps/desktop/src/lib/__tests__/imports/dbeaverImport.spec.ts

@@ -222,7 +222,7 @@ describe("DBeaver folder import", () => {
     expect(connection?.database).toBeUndefined();
   });
 
-  it("keeps the default database empty for DB2 connections (fallback to JDBC) without database configured", async () => {
+  it("maps DB2 connections to DBX's native db2 type instead of falling back to generic JDBC", async () => {
     const [connection] = await parseDbeaverConnections(
       payload({
         connections: {
@@ -243,11 +243,54 @@ describe("DBeaver folder import", () => {
 
     expect(connection).toMatchObject({
       name: "DB2",
-      db_type: "jdbc",
+      db_type: "db2",
+      driver_profile: "db2",
       host: "192.168.10.60",
       port: 50000,
     });
     expect(connection?.database).toBeUndefined();
+    expect(connection?.jdbc_driver_class).toBeUndefined();
+  });
+
+  it("does not pass DBeaver's short driver id through as a JDBC driver class for unmapped drivers", async () => {
+    const [connection] = await parseDbeaverConnections(
+      payload({
+        connections: {
+          vertica: {
+            id: "vertica",
+            name: "Vertica",
+            provider: "vertica",
+            driver: "vertica",
+            configuration: {
+              url: "jdbc:vertica://192.168.10.61:5433/vdb",
+            },
+          },
+        },
+      }),
+    );
+
+    expect(connection).toMatchObject({ name: "Vertica", db_type: "jdbc" });
+    expect(connection?.jdbc_driver_class).toBeUndefined();
+  });
+
+  it("still trusts a package-qualified DBeaver driver id as the JDBC driver class", async () => {
+    const [connection] = await parseDbeaverConnections(
+      payload({
+        connections: {
+          opaque: {
+            id: "opaque",
+            name: "Custom Driver",
+            provider: "generic",
+            driver: "com.example.Driver",
+            configuration: {
+              url: "jdbc:example:db.example.com:1234",
+            },
+          },
+        },
+      }),
+    );
+
+    expect(connection).toMatchObject({ db_type: "jdbc", jdbc_driver_class: "com.example.Driver" });
   });
 
   it("does not treat an opaque JDBC host and port as the database", async () => {

apps/desktop/src/lib/imports/dbeaverImport.ts

@@ -47,6 +47,7 @@ const profileMap: Record<string, ConnectionProfile> = {
   sqlserver: { dbType: "sqlserver", profile: "sqlserver", label: "SQL Server", port: 1433, user: "sa" },
   mssql: { dbType: "sqlserver", profile: "sqlserver", label: "SQL Server", port: 1433, user: "sa" },
   oracle: { dbType: "oracle", profile: "oracle", label: "Oracle", port: 1521, user: "system" },
+  db2: { dbType: "db2", profile: "db2", label: "IBM DB2", port: 50000, user: "db2inst1" },
   clickhouse: { dbType: "clickhouse", profile: "clickhouse", label: "ClickHouse", port: 8123, user: "default" },
   duckdb: { dbType: "duckdb", profile: "duckdb", label: "DuckDB", port: 0, user: "" },
   mongodb: { dbType: "mongodb", profile: "mongodb", label: "MongoDB", port: 27017, user: "" },
@@ -81,6 +82,15 @@ function getNumber(value: unknown) {
   return Number.isFinite(parsed) && parsed > 0 ? parsed : 0;
 }
 
+// DBeaver's own driver id (e.g. "db2", "mysql8") is a short internal registry
+// key, not a Java class name; passing it straight to the JDBC agent as
+// `jdbc_driver_class` makes it try `Class.forName("db2")` and fail with
+// ClassNotFoundException. Only fall back to it when it is actually
+// package-qualified, which is how DBeaver identifies genuinely custom drivers.
+function looksLikeJdbcDriverClassName(value: string) {
+  return /^[a-zA-Z_$][\w$]*(\.[a-zA-Z_$][\w$]*)+$/.test(value);
+}
+
 function firstNonEmptyString(...values: unknown[]) {
   for (const value of values) {
     if (typeof value !== "string") continue;
@@ -258,7 +268,7 @@ function buildConnection(entry: DbeaverConnectionEntry, credentials: ReturnType<
     ssl: false,
     oracle_connection_type: profile.dbType === "oracle" ? parsedUrl.oracleConnectionType || "service_name" : undefined,
     connection_string: profile.dbType === "jdbc" || profile.dbType === "mongodb" ? url || undefined : undefined,
-    jdbc_driver_class: profile.dbType === "jdbc" ? getString(config["driver-class"] || (profile.profile === "jdbcx" ? JDBCX_JDBC_DRIVER_CLASS : entry.driver)) || undefined : undefined,
+    jdbc_driver_class: profile.dbType === "jdbc" ? getString(config["driver-class"] || (profile.profile === "jdbcx" ? JDBCX_JDBC_DRIVER_CLASS : looksLikeJdbcDriverClassName(getString(entry.driver)) ? entry.driver : undefined)) || undefined : undefined,
     jdbc_driver_paths: [],
   };