fix: resolve four findings from code review

- Stop silently booting user from session view on completion
  (SessionsReducer.processSessionCompletedMessage no longer deselects)
- Wrap StageToolManifest send in runCatching to survive WS disconnect
  after orchestrator launch in module scope
- Fix navigateUp dead state: wrap to last workflow instead of -1
- Consolidate event store reads in SessionEventBridge (single read
  for both recentEvents and approval state), removing
  DefaultApprovalRepository dependency

apps/tui/src/main/kotlin/com/correx/apps/tui/reducer/SessionsReducer.kt

@@ -105,12 +105,12 @@ object SessionsReducer {
             return if (wfi > 0) {
                 sessions.copy(selectedWorkflowIndex = wfi - 1)
             } else {
-                // Move back to last session, or stay at first workflow if no sessions
+                // Move back to last session, or wrap to last workflow if no sessions
                 val list = filteredSessions(sessions)
                 if (list.isNotEmpty()) {
                     sessions.copy(selectedWorkflowIndex = -1, selectedId = list.last().id)
                 } else {
-                    sessions.copy(selectedWorkflowIndex = -1)
+                    sessions.copy(selectedWorkflowIndex = sessions.workflows.lastIndex)
                 }
             }
         }
@@ -487,8 +487,7 @@ object SessionsReducer {
         clock: () -> Long,
     ): Pair<SessionsState, List<Effect>> {
         val result = touchSession(sessions, msg.sessionId.value, "COMPLETED", clock)
-        val cleared = if (msg.sessionId.value == result.selectedId) result.copy(selectedId = null) else result
-        return cleared to emptyList()
+        return result to emptyList()
     }
 
     private fun processSessionPausedMessage(