feat(tui): QA fixes + approval Ctrl keys, workflow focus, session UUID

- gate session-list nav on idle so in-session arrows/jk don't move the list (5a)
- approval dismiss on esc + in-session 'a' reopens a pending approval (5b)
- auto-focus a newly started workflow session (was running invisibly)
- approval actions on Ctrl chords (^a/^r/^x) matching the modal; bare/Alt letters no longer approve; diff closes on ^x/esc
- steer hint in the approval modal; session UUID in the input bar
- env-gated debug logging (CORREX_TUI_LOG) with k.Alt in the key trace

apps/tui-go/internal/app/update.go

@@ -93,6 +93,9 @@ func (m *Model) applyServerPhased(msg protocol.ServerMessage) {
 // --- key handling ---
 
 func (m Model) handleKey(k tea.KeyMsg) (tea.Model, tea.Cmd) {
+	debugLog("KEY type=%v runes=%q alt=%v | ds=%s input=%s edit=%s overlay=%d steering=%v steerBuf=%q dismissed=%v entered=%v sel=%s",
+		k.Type, string(k.Runes), k.Alt, m.displayState(), m.inputMode, m.editMode, m.overlay,
+		m.steering, m.steerBuffer, m.approvalDismissed, m.sessionEntered, m.selectedID)
 	// Ctrl+C is a universal hard-quit safety; everything else is bare-key modal.
 	if k.Type == tea.KeyCtrlC {
 		m.quitting = true
@@ -120,8 +123,28 @@ func (m Model) handleNormalKey(k tea.KeyMsg) (tea.Model, tea.Cmd) {
 	case tea.KeyEnter:
 		return m.normalEnter()
 	case tea.KeyEsc:
+		if ds == StateApproval {
+			m.approvalDismissed = true
+			return m, nil
+		}
 		m.filter = ""
 		return m, nil
+	case tea.KeyCtrlA:
+		if ds == StateApproval {
+			return m.decide("APPROVE")
+		}
+		return m, nil
+	case tea.KeyCtrlR:
+		if ds == StateApproval {
+			return m.decide("REJECT")
+		}
+		return m, nil
+	case tea.KeyCtrlX:
+		if m.currentDiff() != "" {
+			m.overlay = OverlayDiff
+			m.diffScrollOffset = 0
+		}
+		return m, nil
 	}
 	if k.Type != tea.KeyRunes {
 		return m, nil
@@ -167,27 +190,20 @@ func (m Model) handleNormalKey(k tea.KeyMsg) (tea.Model, tea.Cmd) {
 		} else {
 			m.cycleChatMode()
 		}
-	case "x":
-		if m.currentDiff() != "" {
-			m.overlay = OverlayDiff
-			m.diffScrollOffset = 0
-		}
 	case "c":
 		if m.selectedID != "" {
 			m.client.Send(protocol.CancelSession(m.selectedID))
 		}
 	case "a":
-		if ds == StateApproval {
-			return m.decide("APPROVE")
+		if ds == StateInSession {
+			if s := m.session(m.selectedID); s != nil && s.Pending != nil {
+				m.approvalDismissed = false
+			}
 		}
 	case "A":
 		if ds == StateApproval {
 			return m.autoApprove()
 		}
-	case "r":
-		if ds == StateApproval {
-			return m.decide("REJECT")
-		}
 	case "q":
 		m.quitting = true
 		return m, tea.Quit
@@ -277,6 +293,7 @@ func (m Model) normalEnter() (tea.Model, tea.Cmd) {
 		m.client.Send(protocol.StartSession(wf.ID))
 		m.wfVisible = false
 		m.wfIndex = -1
+		m.pendingWorkflowFocus = true
 		return m, nil
 	}
 	if m.selectedID != "" {
@@ -316,7 +333,7 @@ func (m Model) handleOverlayKey(k tea.KeyMsg) (tea.Model, tea.Cmd) {
 			}
 		case k.Type == tea.KeyDown || runeIs(k, "j"):
 			m.diffScrollOffset++
-		case runeIs(k, "x"):
+		case k.Type == tea.KeyCtrlX:
 			m.overlay = OverlayNone
 		}
 	case OverlayEventInspector:
@@ -595,7 +612,9 @@ func (m *Model) navUp() {
 		m.wfNav(-1)
 		return
 	}
-	m.listNav(-1)
+	if m.displayState() == StateIdle {
+		m.listNav(-1)
+	}
 }
 
 func (m *Model) navDown() {
@@ -607,7 +626,9 @@ func (m *Model) navDown() {
 		m.wfNav(1)
 		return
 	}
-	m.listNav(1)
+	if m.displayState() == StateIdle {
+		m.listNav(1)
+	}
 }
 
 func (m *Model) wfNav(dir int) {