perf: eliminate theme switch lag by suppressing CSS transitions

Disable all CSS transitions/animations during theme toggle so color
changes apply instantly instead of animating over 150ms. Also cache
Tauri window module import and set color-scheme for native UI elements.

src-tauri/src/commands/agents.rs

@@ -17,6 +17,7 @@ const AGENT_TYPES: &[(&str, &str)] = &[
     ("vastbase", "Vastbase"),
     ("goldendb", "GoldenDB"),
     ("oracle", "Oracle"),
+    ("oracle-10g", "Oracle 10g"),
     ("h2", "H2"),
     ("snowflake", "Snowflake"),
     ("trino", "Trino (Presto)"),

src-tauri/src/commands/connection.rs

@@ -127,6 +127,7 @@ pub async fn test_connection(state: State<'_, Arc<AppState>>, config: Connection
                     .agent_manager
                     .call_daemon::<serde_json::Value>(
                         &config.db_type,
+                        config.driver_profile.as_deref(),
                         "test_connection",
                         serde_json::json!({
                             "host": host,
@@ -238,7 +239,7 @@ pub async fn connect_db(state: State<'_, Arc<AppState>>, config: ConnectionConfi
         | DatabaseType::Kylin
         | DatabaseType::Sundb
         | DatabaseType::Gaussdb => {
-            let mut client = state.agent_manager.spawn(&db_config.db_type).await?;
+            let mut client = state.agent_manager.spawn(&db_config.db_type, db_config.driver_profile.as_deref()).await?;
             client
                 .call::<serde_json::Value>(
                     "connect",