fix(plugins): preserve deprecated panel terminal alias

src/client/src/components/PiWebApp.ts

@@ -943,6 +943,7 @@ export class PiWebApp extends LitElement {
           open: (options) => { void this.openRuntimeTerminal(machineId, workspace, options); },
           runCommand: (input) => terminalCommandRuns.runCommand({ ...input, workspace }),
         },
+        openTerminal: (options) => { void this.openRuntimeTerminal(machineId, workspace, options); },
         host: this.createWorkspaceHost(),
         piWebUnstable: { terminalCommandRuns },
         fileTree: this.state.fileTree,

src/client/src/plugins/types.ts

@@ -131,6 +131,11 @@ export interface QualifiedPluginAction extends AppAction {
 
 export interface WorkspacePanelContext extends WorkspaceContext {
   terminal: WorkspacePanelTerminal;
+  /**
+   * @deprecated Runtime-only compatibility alias for pre-v2 plugins. Use `terminal.open()` instead.
+   * This is intentionally not part of the public `@jmfederico/pi-web/plugin-api` declarations.
+   */
+  openTerminal?: (options?: { terminalId?: string | undefined }) => void;
   piWebUnstable?: Pick<PiWebUnstableRuntimeContext, "terminalCommandRuns">;
   fileTree: FileTreeEntry[];
   expandedDirs: Record<string, FileTreeEntry[]>;