docs: crear issues 0036-0041 — nuevas features del sistema

Issues planificados:
- 0036: Claude Code streaming de progreso en Matrix
- 0037: Agente que crea otros agentes/bots via Matrix
- 0038: Webapps y dashboards embebidos en Element via widgets
- 0039: Recordatorios dinámicos y crons que invocan agentes
- 0040: Soporte para mensajes de voz (audio → STT)
- 0041: Videollamadas con agentes via LiveKit

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

devagents/lifecycle_test.go

@@ -0,0 +1,64 @@
+package agents
+
+import (
+	"context"
+	"testing"
+	"time"
+)
+
+// TestAgentStopAndDone verifies that Stop() cancels Run and Done() closes.
+// Uses a minimal Agent (no Matrix, no LLM) via direct struct init so the test
+// doesn't require network or external dependencies.
+func TestAgentStopAndDone(t *testing.T) {
+	a := &Agent{
+		done: make(chan struct{}),
+	}
+
+	// Simulate Run: create the cancel, then immediately block on ctx.
+	ctx, cancel := context.WithCancel(context.Background())
+	a.cancel = cancel
+
+	started := make(chan struct{})
+	go func() {
+		close(started)
+		// Mimic what Run does: block on ctx, then close done.
+		<-ctx.Done()
+		close(a.done)
+	}()
+
+	<-started
+
+	// Stop must unblock the goroutine above.
+	a.Stop()
+
+	select {
+	case <-a.Done():
+		// ok
+	case <-time.After(2 * time.Second):
+		t.Fatal("Done() did not close within 2s after Stop()")
+	}
+}
+
+// TestAgentStopIdempotent verifies that calling Stop() multiple times is safe.
+func TestAgentStopIdempotent(t *testing.T) {
+	a := &Agent{
+		done: make(chan struct{}),
+	}
+	_, cancel := context.WithCancel(context.Background())
+	a.cancel = cancel
+	defer cancel()
+
+	// Should not panic when called multiple times.
+	a.Stop()
+	a.Stop()
+	a.Stop()
+}
+
+// TestAgentStopNilCancel verifies Stop() is safe when cancel is nil.
+func TestAgentStopNilCancel(t *testing.T) {
+	a := &Agent{
+		done: make(chan struct{}),
+	}
+	// cancel is nil — must not panic.
+	a.Stop()
+}