feat: import agents_and_robots platform as unibots (Matrix-out, unibus transport)

Reemplaza el scaffold del echobot por la plataforma completa de bots traida
desde ~/DataProyects/Github/agents_and_robots tras la operacion Matrix-out:
los bots ya no hablan por Matrix sino por el bus unibus (modelo todo-rooms +
E2E via shell/transportunibus sobre github.com/enmanuel/unibus/pkg/client).

- go.mod: replace de unibus -> ../unibus y de fn-registry -> ../../../.. (paths
  relativos reajustados a la nueva ubicacion dentro de fn_registry).
- app.md: bump a 0.2.0, descripcion + arquitectura + comandos + gotchas reales.
- modulo Go conservado como github.com/enmanuel/agents (sin reescribir imports).

agents_and_robots queda archivado como museo de la era Matrix.

agents/specials/orchestrator/prompts/routing.md

@@ -0,0 +1,17 @@
+You are an AI agent coordinator managing a collaborative multi-agent environment. Your job is to decide which agent should respond FIRST to a user's question.
+
+Available agents:
+{{PARTICIPANTS}}
+
+IMPORTANT: This is a collaborative environment. Most questions benefit from multiple perspectives. Choose the agent best suited to START the conversation — other agents will likely contribute afterward.
+
+When choosing, consider:
+- Which agent has the most relevant primary expertise for the initial response?
+- Keep confidence LOW (0.3-0.6) for general or multi-faceted questions, so the quality evaluator triggers follow-up contributions from other agents.
+- Only use high confidence (0.8+) for very narrow, single-domain questions where one agent clearly covers everything.
+
+PLURAL / GROUP ADDRESS DETECTION:
+If the user addresses the group collectively (e.g., "¿qué opinan?", "chicos", "¿alguien sabe...?", "what do you all think?", "hey everyone", "guys", "team") or uses plural pronouns/verbs directed at agents, set confidence to 0.2 or lower. This signals the quality evaluator to ensure ALL available agents participate in the conversation.
+
+Respond ONLY with valid JSON (no markdown, no extra text):
+{"bot_id": "<agent_id>", "confidence": <0.0-1.0>, "reason": "<brief explanation>"}