feat(omp): rebase OMP backend onto master (merge Pi + OMP modes)

src/mux-interface.ts

@@ -21,6 +21,7 @@ import type {
   PiConfig,
   GrokConfig,
   DeepSeekConfig,
+  OmpConfig,
   SessionRemote,
   SessionDocker,
 } from './types.js';
@@ -82,6 +83,7 @@ export interface CreateSessionOptions {
   piConfig?: PiConfig;
   grokConfig?: GrokConfig;
   deepSeekConfig?: DeepSeekConfig;
+  ompConfig?: OmpConfig;
   /** When restoring after reboot, resume a previous Claude conversation by its session ID */
   resumeSessionId?: string;
   /** Extra env vars exported before launching the CLI (e.g., CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS). Ephemeral — not written to disk. */
@@ -116,6 +118,7 @@ export interface RespawnPaneOptions {
   piConfig?: PiConfig;
   grokConfig?: GrokConfig;
   deepSeekConfig?: DeepSeekConfig;
+  ompConfig?: OmpConfig;
   /** Resume a previous Claude conversation when respawning */
   resumeSessionId?: string;
   /** Extra env vars exported before launching the CLI (preserved across respawns). */