sshkeeper: fix migration - route_hops via ensureSchema() to avoid duplicate column error

internal/db/db.go

@@ -44,6 +44,7 @@ func Open(dataDir string) (*DB, error) {
 }
 
 func (db *DB) ensureSchema() error {
+	// Add startup_command column
 	hasStartupCommand, err := db.hasColumn("servers", "startup_command")
 	if err != nil {
 		return err
@@ -54,6 +55,21 @@ func (db *DB) ensureSchema() error {
 		}
 	}
 
+	// Add route_hops column
+	hasRouteHops, err := db.hasColumn("servers", "route_hops")
+	if err != nil {
+		return err
+	}
+	if !hasRouteHops {
+		if _, err := db.conn.Exec("ALTER TABLE servers ADD COLUMN route_hops TEXT NOT NULL DEFAULT ''"); err != nil {
+			return fmt.Errorf("add route_hops: %w", err)
+		}
+		// Migrate existing ProxyJump values into route_hops
+		if _, err := db.conn.Exec("UPDATE servers SET route_hops = proxy_jump WHERE proxy_jump != ''"); err != nil {
+			return fmt.Errorf("migrate proxy_jump to route_hops: %w", err)
+		}
+	}
+
 	_, err = db.conn.Exec(`
 		CREATE TABLE IF NOT EXISTS global_command_templates (
 			id INTEGER PRIMARY KEY AUTOINCREMENT,

internal/db/migrations/002_routes.sql

@@ -1,10 +1,4 @@
 -- v0.2.0: Add route support
--- Adds route columns to servers table and migrates existing ProxyJump data.
-
-ALTER TABLE servers ADD COLUMN route_hops TEXT NOT NULL DEFAULT '';
-
--- Migrate existing ProxyJump values into Route.Hops (all as raw addresses).
--- ProxyJump format: "host1,host2,host3" → each becomes a RouteHop with IsProfile=false.
--- We store as a simple comma-separated list of raw addresses in route_hops for now.
--- The application layer will parse this into Route.Hops on read.
-UPDATE servers SET route_hops = proxy_jump WHERE proxy_jump != '' AND route_hops = '';
+-- Note: The route_hops column is now added programmatically in ensureSchema()
+-- in db.go to handle idempotent migrations. This file is kept for reference.
+-- No SQL operations needed here.