feat: father-bot — agente del sistema que crea otros agentes via Matrix

Primer agente privilegiado en agents/_specials/. Usa provider claude-code
con acceso completo al repositorio para ejecutar el pipeline de creacion
de agentes de forma autonoma (scaffold, build, register, verify, restart).

Archivos:
- agent.go: reglas puras (DM/mention → LLM)
- config.yaml: claude-code provider, bypassPermissions, E2EE, audit
- prompts/system.md: guia completa de creacion con decision tree,
  convencion de IDs, validaciones y seccion anti-injection

Config: claude-code con working_dir al repo, allowed_tools restringido,
model sonnet, timeout 10m, add_dirs con templates y referencias.

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

agents/_specials/father-bot/agent.go

@@ -0,0 +1,30 @@
+// Package father defines the pure rules for Father Bot, the system agent
+// that creates other agents and robots via Matrix.
+package father
+
+import (
+	"github.com/enmanuel/agents/devagents"
+	"github.com/enmanuel/agents/pkg/decision"
+)
+
+func init() {
+	devagents.Register("father-bot", Rules)
+}
+
+// Rules returns the decision rules for Father Bot.
+// Simple: any DM or mention routes to the LLM (claude-code subprocess).
+// All creation logic lives in the system prompt + claude-code capabilities.
+func Rules() []decision.Rule {
+	return []decision.Rule{
+		{
+			Name: "llm-all",
+			Match: func(ctx decision.MessageContext) bool {
+				return ctx.IsDirectMsg || ctx.IsMention
+			},
+			Actions: []decision.Action{{
+				Kind: decision.ActionKindLLM,
+				LLM:  &decision.LLMAction{},
+			}},
+		},
+	}
+}