Reduce Telegram tool message noise

internal/telegram/render_test.go

@@ -101,6 +101,37 @@ func TestRenderCodexStartedItems(t *testing.T) {
 	}
 }
 
+func TestToolMessageAddsEditedAtBeforeDetails(t *testing.T) {
+	tool := toolMessageState{
+		toolHTML: SummaryDetailsHTML("Tool call: command finished\nCommand: go test ./...", "full output"),
+		editedAt: "2026-05-21 12:34:56 UTC",
+	}
+	text := tool.html()
+	want := "Command: go test ./...\nEdited at: 2026-05-21 12:34:56 UTC\n<blockquote expandable>"
+	if !strings.Contains(text, want) {
+		t.Fatalf("edited timestamp not placed before details: %q", text)
+	}
+}
+
+func TestToolMessageFitsCombinedApprovalDetails(t *testing.T) {
+	largeToolDetails := strings.Repeat("tool output line\n", 600)
+	largeApprovalDetails := strings.Repeat("approval payload line\n", 600)
+	tool := toolMessageState{
+		toolHTML:     SummaryDetailsHTML("Tool call: command finished", largeToolDetails),
+		approvalHTML: SummaryDetailsHTML("Codex requests command approval", largeApprovalDetails),
+		editedAt:     "2026-05-21 12:34:56 UTC",
+	}
+	text := tool.html()
+	if len([]rune(text)) > TelegramHTMLMessageLimit {
+		t.Fatalf("tool message exceeds Telegram limit: %d", len([]rune(text)))
+	}
+	for _, want := range []string{"Tool call: command finished", "Codex requests command approval", "Edited at: 2026-05-21 12:34:56 UTC", "...[truncated]"} {
+		if !strings.Contains(text, want) {
+			t.Fatalf("fitted tool message missing %q in %q", want, text)
+		}
+	}
+}
+
 func TestResumeCallbackData(t *testing.T) {
 	threadID, ok := ParseResumeThreadCallbackData(ResumeThreadCallbackData(123))
 	if !ok || threadID != 123 {