Support DBX connection deep links (#359)

* fix(mysql): avoid metadata collation conflicts

Split MySQL column and primary key metadata lookups so MariaDB and OceanBase do not join information_schema tables with incompatible collations.

* feat(grid): add invert column visibility action

* feat(grid): improve cell detail editing

* feat(grid): add keyboard cell navigation

* feat(grid): add column name copy in header tooltip

* feat(grid): improve transpose navigation

* feat(connection): support dbx connection deep links

* docs: document connection deep links

* fix(connection): harden deep link boolean handling

crates/dbx-core/src/connection.rs

@@ -689,6 +689,7 @@ mod tests {
             external_config: None,
             jdbc_driver_class: None,
             jdbc_driver_paths: Vec::new(),
+            one_time: false,
         }
     }
 

crates/dbx-core/src/connection_secrets.rs

@@ -313,6 +313,7 @@ mod tests {
             external_config: None,
             jdbc_driver_class: None,
             jdbc_driver_paths: Vec::new(),
+            one_time: false,
         }
     }
 

crates/dbx-core/src/models/connection.rs

@@ -68,6 +68,8 @@ pub struct ConnectionConfig {
     pub jdbc_driver_class: Option<String>,
     #[serde(default)]
     pub jdbc_driver_paths: Vec<String>,
+    #[serde(default, skip_serializing_if = "is_false")]
+    pub one_time: bool,
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
@@ -88,6 +90,10 @@ fn default_proxy_port() -> u16 {
     1080
 }
 
+fn is_false(value: &bool) -> bool {
+    !*value
+}
+
 #[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq)]
 #[serde(rename_all = "lowercase")]
 pub enum ProxyType {
@@ -671,6 +677,7 @@ mod tests {
             external_config: None,
             jdbc_driver_class: None,
             jdbc_driver_paths: Vec::new(),
+            one_time: false,
         }
     }
 

crates/dbx-core/src/query.rs

@@ -1276,6 +1276,7 @@ mod tests {
             external_config: None,
             jdbc_driver_class: None,
             jdbc_driver_paths: Vec::new(),
+            one_time: false,
         };
 
         let params = external_driver_query_params(&config, "SELECT * FROM events", "analytics", Some("app"));

crates/dbx-web/src/routes/connection.rs

@@ -166,6 +166,7 @@ mod tests {
             external_config: None,
             jdbc_driver_class: None,
             jdbc_driver_paths: Vec::new(),
+            one_time: false,
         }
     }