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/model.go

@@ -119,6 +119,7 @@ type ToolRecord struct {
 	Name   string
 	Tier   int
 	Status ToolStatus
+	Params []string // pretty "key=value" call args, from tool.started
 }
 
 // ManifestTool is a declared (not-yet-run) tool from a stage manifest.
@@ -208,6 +209,7 @@ type Session struct {
 	Status             string
 	WorkflowID         string
 	Name               string
+	named              bool // Name came from a session.renamed (intent-derived title); don't clobber with workflowId
 	LastEventAt        int64
 	CurrentStage       string
 	PlanGoal           string
@@ -429,6 +431,11 @@ type Model struct {
 	// the OUTPUT transcript; they always stay in the EVENTS panel. Persisted in tui-prefs.json.
 	actionsHidden bool
 
+	// thinkingShown reveals the model's reasoning/thinking blocks in the OUTPUT transcript.
+	// Off by default (collapsed to a one-line summary) so the trace doesn't drown the answer;
+	// toggled from the palette ("thinking"). Persisted in tui-prefs.json.
+	thinkingShown bool
+
 	// outputScroll is how many rows up from the bottom the OUTPUT transcript is scrolled
 	// (0 = tail-follow the newest output). PgUp/PgDn + ctrl+u/d move it; esc snaps back.
 	outputScroll int
@@ -504,6 +511,7 @@ func NewModel(client *ws.Client) Model {
 		transcriptSel:         -1,
 		sbHidden:              loadStatusbarHidden(),
 		actionsHidden:         loadPrefs().InlineActionsHidden,
+		thinkingShown:         loadPrefs().ThinkingShown,
 	}
 }