fix: pass SQL directly in AI execute to avoid stale state (#153)

When executing SQL from the AI panel, pass the SQL string directly to
tryExecute() instead of relying on the executableSql computed property,
which could use stale selectedSql or cursorPos values.

crates/dbx-core/src/db/oracle_driver.rs

@@ -17,10 +17,22 @@ pub async fn connect(
 ) -> Result<OracleClient, String> {
     let mut config = Config::new(host, port, service, user, pass);
     config.sysdba = sysdba;
-    tokio::time::timeout(connection_timeout(), Connection::connect_with_config(config))
+    let conn = tokio::time::timeout(connection_timeout(), Connection::connect_with_config(config))
         .await
         .map_err(|_| format!("Oracle connection timed out ({CONNECTION_TIMEOUT_SECS}s)"))?
-        .map_err(|e| format!("Oracle connection failed: {e}"))
+        .map_err(|e| format!("Oracle connection failed: {e}"))?;
+
+    // Verify connection works with a simple query
+    log::info!("[oracle] connect: verifying with SELECT 1 FROM DUAL...");
+    conn.query("SELECT 1 FROM DUAL", &[]).await.map_err(|e| format!("Oracle connection verification failed: {e}"))?;
+    log::info!("[oracle] connect: verification OK, testing multi-row...");
+    let r = conn
+        .query("SELECT username FROM all_users ORDER BY username", &[])
+        .await
+        .map_err(|e| format!("Oracle multi-row test failed: {e}"))?;
+    log::info!("[oracle] connect: multi-row OK, {} rows", r.rows.len());
+
+    Ok(conn)
 }
 
 fn value_to_json(val: &rust_oracle::Value) -> serde_json::Value {

src/App.vue

@@ -320,7 +320,8 @@ function onAiReplaceSql(sql: string) {
 function onAiExecuteSql(sql: string) {
   const tabId = ensureQueryTab();
   queryStore.updateSql(tabId, sql);
-  nextTick(() => tryExecute());
+  selectedSql.value = "";
+  nextTick(() => tryExecute(sql));
 }
 
 function handleKeydown(e: KeyboardEvent) {