feat: unify interactive operation coordination

internal/tui/pages.go

@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"strings"
 
-	"proxyctl/internal/app"
 	"proxyctl/internal/profile"
 )
 
@@ -22,11 +21,14 @@ func (p terminalPresentation) mainView(model presentationState, width, height in
 
 	catalog := newTargetCatalog(model.snapshot, model.showUnavailable, model.selectedTargetID)
 	footer := p.dashboardFooter(model, catalog)
-	if model.targetConfirm && !model.operationActive {
-		footer = "y: confirm  Enter/n/Esc: Cancel"
+	if model.confirmation != nil && !model.operationActive {
+		footer = "y: confirm  Enter/n/Esc: Cancel  q: exit"
 	}
 	if model.currentError != nil {
 		footer += "\ne: expand/collapse current error  x: acknowledge error"
+		if model.errorExpanded {
+			footer += "  PgUp/PgDn: scroll error details"
+		}
 	}
 	page := terminalPage{
 		header: header,
@@ -36,9 +38,7 @@ func (p terminalPresentation) mainView(model presentationState, width, height in
 			selectedTargetID:  model.selectedTargetID,
 			focus:             model.dashboardFocus,
 			detailsOffset:     model.detailsOffset,
-			applying:          model.applying,
-			profileTransition: model.profileTransition,
-			progressTarget:    model.progressTarget,
+			operationProgress: model.operationProgress,
 		},
 	}
 	if model.confirmation != nil {
@@ -66,21 +66,21 @@ func (p terminalPresentation) dashboardFooter(model presentationState, catalog t
 		visibility = "u: hide unavailable"
 	}
 	if model.dashboardFocus == targetDetailsPane {
-		footer := "↑/k ↓/j PgUp/PgDn: scroll  Tab: focus Targets  " + visibility + "\np: manage Proxy Profiles  ?: help  q/Esc: quit"
+		footer := "↑/k ↓/j PgUp/PgDn: scroll  Tab: focus Targets  " + visibility + "\np: manage Proxy Profiles  ?: help  q: quit"
 		if model.operationActive {
 			footer = "↑/k ↓/j PgUp/PgDn: scroll  Tab: focus Targets  ?: help\nMutations disabled: wait for the current mutation to finish"
 		}
 		return footer
 	}
 	actions := "↑/k ↓/j: select  Tab: focus details  " + visibility
-	if selected, ok := catalog.selected(model.selectedTargetID); ok && selected.Available && selected.DetectionPhase == app.TargetReady {
-		if model.operationActive {
-			actions = "Space: disabled (mutation in progress)  " + actions
-		} else {
-			actions = "Space: toggle  " + actions
-		}
+	selected, ok := catalog.selected(model.selectedTargetID)
+	availability := targetMutationAvailability(selected, ok, model.snapshot.ActiveProfile, model.operationActive || model.exitDeferred)
+	if availability.available {
+		actions = "Space: toggle  " + actions
+	} else {
+		actions = "Space: disabled (" + availability.compactReason + ")  " + actions
 	}
-	footer := actions + "\np: manage Proxy Profiles  r: refresh  ?: help  q/Esc: quit"
+	footer := actions + "\np: manage Proxy Profiles  r: refresh  ?: help  q: quit"
 	if model.operationActive {
 		footer = actions + "\n?: help  q: defer safe exit; new mutations disabled"
 	}
@@ -127,8 +127,6 @@ func (p terminalPresentation) profilesView(model presentationState) terminalPage
 	context := selectedProfileDetails(p, model)
 	footer := "n: new  e: edit  d: delete  a/Enter: activate\n↑/k ↓/j: select  q/Esc: back"
 	switch {
-	case model.profileConfirm:
-		footer = "y: confirm  n/Esc: cancel"
 	case model.confirm:
 		footer = "y: confirm  n/Esc: cancel"
 		if len(model.snapshot.Profiles) == 1 {