fix: re-dirty column options on save failure and fix modal help text

Re-set colOptionsDirty on configSaveErrMsg so closing the modal again
retries persistence without requiring the user to toggle something
first. Show "borders" instead of "toggle" in the column options help
when opened from the tasks view, where space only toggles borders
(column visibility is not available).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: wesm

cmd/roborev/tui/render_queue.go

@@ -851,8 +851,12 @@ func (m model) renderColumnOptionsView() string {
 	}
 
 	b.WriteString("\n")
+	toggleHelp := helpItem{"space", "toggle"}
+	if m.colOptionsReturnView == viewTasks {
+		toggleHelp = helpItem{"space", "borders"}
+	}
 	helpRows := [][]helpItem{
-		{{"↑/↓", "navigate"}, {"j/k", "reorder"}, {"space", "toggle"}, {"esc", "close"}},
+		{{"↑/↓", "navigate"}, {"j/k", "reorder"}, toggleHelp, {"esc", "close"}},
 	}
 	b.WriteString(renderHelpTable(helpRows, m.width))
 

cmd/roborev/tui/tui.go

@@ -661,6 +661,7 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 	case applyPatchResultMsg:
 		return m.handleApplyPatchResultMsg(msg)
 	case configSaveErrMsg:
+		m.colOptionsDirty = true
 		m.setFlash("Config save failed: "+msg.err.Error(), 5*time.Second, m.currentView)
 		return m, nil
 	}