mavend: name the service that is down, and never read an empty list (V-521)

Two caller-side halves of the same review.

«экосистема недоступна» named nothing. Nexus, Praxis and Hexis fail
independently, and every one of the six call sites already knew which one it was
talking to — it writes that name into the trace on the line above. So eco_down
and eco_denied now take {name}, and he hears which service refused him.

The list entries are single-variant and placeholder-only, so an empty list has
no shorter wording to fall back on: attention_list would render as its own label
and a colon. Both Praxis readers checked the response length and neither checked
what survived formatting, so an item with no title counted toward a list it
could not appear in. They skip the untitled item and fall to the _none entry
when nothing is left.

The ecosystem tests asserted the substring "выполнена", which was a literal out
of the act file that review has now reworded. Seventeen sites go through actRan,
which asks the file.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XGTGCWX33aX8SMBSRz9VmS

cmd/mavend/ecosystem_test.go

@@ -11,6 +11,7 @@ import (
 	hexisclient "github.com/kami/hexis/pkg/client"
 
 	"github.com/kami/maven/internal/ipc"
+	"github.com/kami/maven/internal/phraser"
 	"github.com/kami/maven/internal/router"
 )
 
@@ -85,7 +86,7 @@ func TestHexisMutatingRequiresConfirm(t *testing.T) {
 
 	// The follow-up "да" turn executes exactly the parked capability.
 	confirmReply, handled := h.resolveConfirm(ctx, "да")
-	if !handled || !strings.Contains(confirmReply, "выполнена") {
+	if !handled || !actRan(confirmReply) {
 		t.Fatalf("confirm should execute, got handled=%v reply=%q", handled, confirmReply)
 	}
 	if !*executed {
@@ -125,7 +126,7 @@ func TestHexisReadOnlyExecutesImmediately(t *testing.T) {
 	if h.pendingHexis != nil {
 		t.Fatal("read-only cap should not park a confirmation")
 	}
-	if !strings.Contains(reply, "выполнена") {
+	if !actRan(reply) {
 		t.Fatalf("unexpected reply %q", reply)
 	}
 }
@@ -186,7 +187,7 @@ func TestHexisNexusErrorFailsClosed(t *testing.T) {
 	if reply == "" {
 		t.Fatal("nexus dependency failure must not fall through with an empty reply")
 	}
-	if strings.Contains(reply, "выполнена") {
+	if actRan(reply) {
 		t.Fatalf("nexus dependency failure must not report success, got %q", reply)
 	}
 }
@@ -219,7 +220,7 @@ func TestHexisUnavailableFailsClosed(t *testing.T) {
 	if reply == "" {
 		t.Fatal("hexis dependency failure must not fall through with an empty reply")
 	}
-	if strings.Contains(reply, "выполнена") {
+	if actRan(reply) {
 		t.Fatalf("hexis dependency failure must not report success, got %q", reply)
 	}
 }
@@ -241,3 +242,14 @@ func TestHexisNotFoundStillFallsThrough(t *testing.T) {
 		t.Fatal("not_found resolution must never execute a hexis capability")
 	}
 }
+
+// actRan — the reply is the line she says when a capability ran against an
+// entity. The tests used to look for the substring "выполнена", which was a
+// literal out of the act file: the review reworded that line to "готово: {name}"
+// and seventeen assertions went with it (Vikunja #521).
+func actRan(reply string) bool {
+	return phraser.IsA(phraser.ActDoneEntity, map[string]string{"name": muzickIndexer}, reply)
+}
+
+// muzickIndexer — the display name every ecosystem fixture resolves to.
+const muzickIndexer = "Muzick indexer"