feat(recovery,context): tier-2 intent-holder arbiter + remaining-delta pinning + surfaced signal events

- recovery: two-tier repair ladder — owner then arbiter (recovery stage recast
  as intent-holder, holds initial intent, reconciles cross-file contract disputes)
  with independent INTENT_ROUTE_BUDGET; RecoveryRoutingTest coverage
- context: remaining-delta checklist pinning (RemainingDelta{Pinning,Entry}Test)
- surface write-only events (session name, quality signals) into stats/browse
- parseToolArguments lenient-Json fallback for bare-key drift
- tools: ChildProcess seam

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

@@ -532,7 +532,7 @@ func (m Model) eventInspectorModal() string {
 			fg = t.P.FgStrong
 		}
 		row := marker + mbg(t, padRaw(e.Time, 8)+" ", t.P.Faint) +
-			lipgloss.NewStyle().Foreground(t.categoryColor(cat)).Background(t.P.BgPanel).Render(padRaw("["+cat+"]", 11)) + " " +
+			lipgloss.NewStyle().Foreground(t.categoryColor(cat)).Background(t.P.BgPanel).Render(padRaw("["+cat+"]", 11)) + mbg(t, " ", t.P.Fg) +
 			lipgloss.NewStyle().Foreground(fg).Background(t.P.BgPanel).Render(padRaw(e.Type, 18)) +
 			mbg(t, " "+truncate(e.Detail, detailBudget), t.P.Dim)
 		b.WriteString(row + "\n")