feat(tui-go): drop inline tool-start rows (keep results only)

The ⏵ tool-start row doubled up with the ✓/✎ result row in OUTPUT. Drop it
inline — tool starts still show in the tool list + EVENTS panel. The inline
transcript now carries only outcomes: ✎ writes, ✓/✗ tool results, ⌘/✕
approvals, ⊞/⊟ grants.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

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

@@ -173,10 +173,8 @@ func PreviewFrame(kind string, w, h int) string {
 		m.routerMessages["04a546aa"] = []RouterEntry{
 			{Role: "user", Content: "run the healthcheck and write the script"},
 			{Role: "router", Content: "I'll create the script, then run it."},
-			{Role: "action", Icon: "⏵", Content: "file_write"},
 			{Role: "action", Icon: "✎", Content: "wrote healthcheck.sh  (+4 −0)"},
 			{Role: "action", Icon: "⌘", Content: "approved file_write"},
-			{Role: "action", Icon: "⏵", Content: "shell"},
 			{Role: "action", Icon: "✓", Content: "shell · exit 0"},
 			{Role: "action", Icon: "⊞", Content: "granted file_write · global"},
 			{Role: "router", Content: "Done — script written and the healthcheck passes."},

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

@@ -67,7 +67,7 @@ const (
 type RouterEntry struct {
 	Role    string // user | router | tool | narration | narration_llm | action
 	Content string
-	Icon    string // action role only: the gutter glyph (⏵ ✓ ✎ ⌘ ✕ ⊞ ⊟)
+	Icon    string // action role only: the gutter glyph (✓ ✎ ✗ ⌘ ✕ ⊞ ⊟)
 	Metrics *TurnMetrics
 }
 

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

@@ -198,7 +198,8 @@ func (m *Model) applyServer(msg protocol.ServerMessage) {
 			}
 			s.LastEventAt = nowMillis()
 		}
-		m.appendAction(msg.SessionID, "⏵", msg.ToolName)
+		// Tool-start is not surfaced inline (it doubles up with the ✓/✎ result row); it
+		// stays in the tool list + EVENTS panel.
 	case protocol.TypeToolCompleted:
 		if s := m.session(msg.SessionID); s != nil {
 			s.Active = false