fix: resolve 3 remaining PR #1819 review issues

- Preserve 'exited' status in setClaudeMode(false) instead of overwriting to 'running'
- Add isResumingPhase guard to SWAP_RESUME_COMPLETE for consistency with other swap events
- Clean up stale migratedSessionFlags when resumeClaudeAsync finds no terminal

Co-Authored-By: Claude Opus 4.6 <[email protected]>

apps/frontend/src/main/terminal/terminal-manager.ts

@@ -229,6 +229,10 @@ export class TerminalManager {
   async resumeClaudeAsync(id: string, sessionId?: string, options?: { migratedSession?: boolean }): Promise<void> {
     const terminal = this.terminals.get(id);
     if (!terminal) {
+      // Clean up stale migratedSessionFlags if terminal no longer exists
+      if (options?.migratedSession && sessionId) {
+        this.migratedSessionFlags.delete(sessionId);
+      }
       return;
     }
 

apps/frontend/src/renderer/stores/terminal-store.ts

@@ -417,7 +417,7 @@ export const useTerminalStore = create<TerminalState>((set, get) => ({
           ? {
               ...t,
               isClaudeMode,
-              status: isClaudeMode ? 'claude-active' : 'running',
+              status: isClaudeMode ? 'claude-active' : (t.status === 'exited' ? 'exited' : 'running'),
               // Reset busy state and naming flag when leaving Claude mode
               isClaudeBusy: isClaudeMode ? t.isClaudeBusy : undefined,
               claudeNamedOnce: isClaudeMode ? t.claudeNamedOnce : undefined

apps/frontend/src/shared/state-machines/terminal-machine.ts

@@ -108,6 +108,7 @@ export const terminalMachine = createMachine(
           },
           SWAP_RESUME_COMPLETE: {
             target: 'claude_active',
+            guard: 'isResumingPhase',
             actions: 'applySwapComplete',
           },
           SWAP_FAILED: {
@@ -142,6 +143,7 @@ export const terminalMachine = createMachine(
       isCapturingPhase: ({ context }) => context.swapPhase === 'capturing',
       isMigratingPhase: ({ context }) => context.swapPhase === 'migrating',
       isRecreatingPhase: ({ context }) => context.swapPhase === 'recreating',
+      isResumingPhase: ({ context }) => context.swapPhase === 'resuming',
     },
     actions: {
       setProfileId: assign({