feat(kubernetes): add database persistence for clusters and port_forwards

- Add load_clusters and load_port_forwards commands to db.rs
- Update remove_cluster to delete from database
- Update delete_port_forward to delete from database
- Add Cluster and PortForward imports to db.rs
- Add load commands to lib.rs generate_handler
- Fix formatting issues

src-tauri/src/commands/db.rs

@@ -1,8 +1,8 @@
 use tauri::State;
 
 use crate::db::models::{
-    AiConversation, AiMessage, ImageAttachment, Issue, IssueDetail, IssueFilter, IssueSummary,
-    IssueUpdate, LogFile, ResolutionStep, TimelineEvent,
+    AiConversation, AiMessage, Cluster, ImageAttachment, Issue, IssueDetail, IssueFilter,
+    IssueSummary, IssueUpdate, LogFile, PortForward, ResolutionStep, TimelineEvent,
 };
 use crate::state::AppState;
 
@@ -805,3 +805,93 @@ mod tests {
         assert_eq!(results[0], "issue-1");
     }
 }
+
+// ─── Kubernetes Cluster CRUD ────────────────────────────────────────────────
+
+use rusqlite::ffi;
+
+#[tauri::command]
+pub async fn load_clusters(state: State<'_, AppState>) -> Result<Vec<Cluster>, String> {
+    let db = state.db.lock().map_err(|e| e.to_string())?;
+
+    let mut stmt = db
+        .prepare(
+            "SELECT id, name, context, server_url, kubeconfig_id, created_at, updated_at \
+             FROM clusters ORDER BY name ASC",
+        )
+        .map_err(|e| e.to_string())?;
+
+    let clusters: Vec<Cluster> = stmt
+        .query_map([], |row| {
+            Ok(Cluster {
+                id: row.get(0)?,
+                name: row.get(1)?,
+                context: row.get(2)?,
+                server_url: row.get(3)?,
+                kubeconfig_id: row.get(4)?,
+                created_at: row.get(5)?,
+                updated_at: row.get(6)?,
+            })
+        })
+        .map_err(|e| e.to_string())?
+        .filter_map(|r| r.ok())
+        .collect();
+
+    Ok(clusters)
+}
+
+// ─── Port Forward CRUD ──────────────────────────────────────────────────────
+
+#[tauri::command]
+pub async fn load_port_forwards(state: State<'_, AppState>) -> Result<Vec<PortForward>, String> {
+    let db = state.db.lock().map_err(|e| e.to_string())?;
+
+    let mut stmt = db
+        .prepare(
+            "SELECT id, cluster_id, namespace, pod, container, ports, local_ports, status, error_message, created_at, updated_at \
+             FROM port_forwards ORDER BY created_at ASC",
+        )
+        .map_err(|e| e.to_string())?;
+
+    let port_forwards: Vec<PortForward> = stmt
+        .query_map([], |row| {
+            let ports_str: String = row.get(5)?;
+            let local_ports_str: String = row.get(6)?;
+            let ports: Vec<u16> = match serde_json::from_str(&ports_str) {
+                Ok(v) => v,
+                Err(e) => {
+                    return Err(rusqlite::Error::SqliteFailure(
+                        ffi::Error::new(ffi::SQLITE_ERROR),
+                        Some(format!("Failed to parse ports: {e}")),
+                    ))
+                }
+            };
+            let local_ports: Vec<u16> = match serde_json::from_str(&local_ports_str) {
+                Ok(v) => v,
+                Err(e) => {
+                    return Err(rusqlite::Error::SqliteFailure(
+                        ffi::Error::new(ffi::SQLITE_ERROR),
+                        Some(format!("Failed to parse local_ports: {e}")),
+                    ))
+                }
+            };
+            Ok(PortForward {
+                id: row.get(0)?,
+                cluster_id: row.get(1)?,
+                namespace: row.get(2)?,
+                pod: row.get(3)?,
+                container: row.get(4)?,
+                ports,
+                local_ports,
+                status: row.get(7)?,
+                error_message: row.get(8)?,
+                created_at: row.get(9)?,
+                updated_at: row.get(10)?,
+            })
+        })
+        .map_err(|e| e.to_string())?
+        .filter_map(|r| r.ok())
+        .collect();
+
+    Ok(port_forwards)
+}

src-tauri/src/commands/kube.rs

@@ -148,13 +148,20 @@ fn extract_server_url(content: &str) -> Result<String, String> {
 
 #[tauri::command]
 pub async fn remove_cluster(id: String, state: State<'_, AppState>) -> Result<(), String> {
+    // Delete cluster from database (cascade will delete port_forwards)
+    {
+        let db = state.db.lock().map_err(|e| e.to_string())?;
+        db.execute("DELETE FROM clusters WHERE id = ?1", [&id])
+            .map_err(|e| format!("Failed to delete cluster: {e}"))?;
+    }
+
     let mut clusters = state.clusters.lock().await;
 
     if clusters.remove(&id).is_none() {
         return Err(format!("Cluster {id} not found"));
     }
 
-    // Cascade delete: remove all port forwards for this cluster
+    // Cascade delete: remove all port forwards for this cluster from memory
     let mut port_forwards = state.port_forwards.lock().await;
     let session_ids_to_remove: Vec<String> = port_forwards
         .iter()
@@ -163,7 +170,9 @@ pub async fn remove_cluster(id: String, state: State<'_, AppState>) -> Result<()
         .collect();
 
     for session_id in session_ids_to_remove {
-        port_forwards.remove(&session_id);
+        if let Some(mut session) = port_forwards.remove(&session_id) {
+            session.close().await;
+        }
     }
 
     Ok(())
@@ -202,7 +211,7 @@ pub async fn test_cluster_connection(
     // Write kubeconfig to temp file and ensure cleanup even on panic
     let temp_dir = std::env::temp_dir();
     let temp_path = temp_dir.join(format!("kubeconfig-{}.yaml", cluster_id));
-    
+
     // Create cleanup struct BEFORE writing - ensures cleanup happens even on panic
     struct TempFileCleanup(std::path::PathBuf);
     impl Drop for TempFileCleanup {
@@ -258,7 +267,7 @@ pub async fn discover_pods(
     // Write kubeconfig to temp file and ensure cleanup even on panic
     let temp_dir = std::env::temp_dir();
     let temp_path = temp_dir.join(format!("kubeconfig-{}-pods.yaml", cluster_id));
-    
+
     // Create cleanup struct BEFORE writing - ensures cleanup happens even on panic
     struct TempFileCleanup(std::path::PathBuf);
     impl Drop for TempFileCleanup {
@@ -475,7 +484,7 @@ pub async fn start_port_forward(
     // Write kubeconfig to temp file and ensure cleanup even on panic
     let temp_dir = std::env::temp_dir();
     let temp_path = temp_dir.join(format!("kubeconfig-{}.yaml", request.cluster_id));
-    
+
     // Create cleanup struct BEFORE writing - ensures cleanup happens even on panic
     struct TempFileCleanup(std::path::PathBuf);
     impl Drop for TempFileCleanup {
@@ -591,6 +600,13 @@ pub async fn list_port_forwards(
 
 #[tauri::command]
 pub async fn delete_port_forward(id: String, state: State<'_, AppState>) -> Result<(), String> {
+    // Delete from database
+    {
+        let db = state.db.lock().map_err(|e| e.to_string())?;
+        db.execute("DELETE FROM port_forwards WHERE id = ?1", [&id])
+            .map_err(|e| format!("Failed to delete port forward: {e}"))?;
+    }
+
     let mut port_forwards = state.port_forwards.lock().await;
 
     if let Some(mut session) = port_forwards.remove(&id) {
@@ -698,15 +714,15 @@ mod tests {
 #[tauri::command]
 pub async fn shutdown_port_forwards(state: State<'_, AppState>) -> Result<(), String> {
     let mut port_forwards = state.port_forwards.lock().await;
-    
+
     // Close all active port forward sessions
     let session_ids: Vec<String> = port_forwards.keys().cloned().collect();
-    
+
     for session_id in session_ids {
         if let Some(mut session) = port_forwards.remove(&session_id) {
             session.close().await;
         }
     }
-    
+
     Ok(())
 }

src-tauri/src/kube/portforward.rs

@@ -85,7 +85,7 @@ impl PortForwardSession {
         let join_handle = tokio::spawn(async move {
             // Take the child from the Arc
             let mut child = child_for_task.lock().await.take().expect("Child not set");
-            
+
             // Wait for the child process to complete
             // This is safe because we're in an async context
             let result = child.wait().await;

src-tauri/src/lib.rs

@@ -95,6 +95,8 @@ pub fn run() {
             commands::db::update_five_why,
             commands::db::add_timeline_event,
             commands::db::get_timeline_events,
+            commands::db::load_clusters,
+            commands::db::load_port_forwards,
             // Analysis / PII
             commands::analysis::upload_log_file,
             commands::analysis::upload_log_file_by_content,