Fix build blockers and rewrite README with authorized-use warning.

Restore server/agent compile fixes, wire remote actions end-to-end, harden run.bat, and document AetherForge with a severity-ranked audit in PROBLEMS.md.

server/internal/api/ai_handler.go

@@ -23,13 +23,18 @@ import (
 // AIHandler manages AI autonomy endpoints.
 type AIHandler struct {
 	db       *db.Database
-	engines  map[string]*ollama.Engine // agentID -> engine (each agent can have its own Ollama config)
-	reports  []ollama.Report           // recent tool execution reports
+	engines  map[string]*agentEngine // agentID -> engine wrapper
+	reports  []ollama.Report         // recent tool execution reports
 	activity map[string]AIActivityEntry
 	onEvent  func(AIActivityEntry)
 	mu       sync.RWMutex
 }
 
+type agentEngine struct {
+	engine   *ollama.Engine
+	lastUsed time.Time
+}
+
 // AIActivityEntry summarizes recent AI cycles per agent.
 type AIActivityEntry struct {
 	AgentID       string    `json:"agent_id"`
@@ -44,12 +49,34 @@ type AIActivityEntry struct {
 
 // NewAIHandler creates a new AI handler.
 func NewAIHandler(database *db.Database) *AIHandler {
-	return &AIHandler{
+	h := &AIHandler{
 		db:       database,
-		engines:  make(map[string]*ollama.Engine),
+		engines:  make(map[string]*agentEngine),
 		reports:  make([]ollama.Report, 0, 1000),
 		activity: make(map[string]AIActivityEntry),
 	}
+	go h.runCleanupLoop()
+	return h
+}
+
+func (h *AIHandler) runCleanupLoop() {
+	ticker := time.NewTicker(10 * time.Minute)
+	defer ticker.Stop()
+	for range ticker.C {
+		h.mu.Lock()
+		now := time.Now()
+		for id, eng := range h.engines {
+			if now.Sub(eng.lastUsed) > 1*time.Hour {
+				delete(h.engines, id)
+			}
+		}
+		for id, act := range h.activity {
+			if now.Sub(act.LastReportAt) > 24*time.Hour && now.Sub(act.LastDecideAt) > 24*time.Hour {
+				delete(h.activity, id)
+			}
+		}
+		h.mu.Unlock()
+	}
 }
 
 func (h *AIHandler) SetEventBroadcaster(fn func(AIActivityEntry)) {
@@ -71,7 +98,10 @@ func (h *AIHandler) SetEngineForAgent(agentID, ollamaEndpoint, model string) {
 		model = "llama3.2"
 	}
 
-	h.engines[agentID] = ollama.NewEngine(ollamaEndpoint, model)
+	h.engines[agentID] = &agentEngine{
+		engine:   ollama.NewEngine(ollamaEndpoint, model),
+		lastUsed: time.Now(),
+	}
 	log.Printf("[AI] Engine set for agent %s (endpoint=%s, model=%s)", agentID, ollamaEndpoint, model)
 }
 
@@ -86,7 +116,15 @@ func (h *AIHandler) RemoveEngine(agentID string) {
 func (h *AIHandler) GetEngine(agentID string) *ollama.Engine {
 	h.mu.RLock()
 	defer h.mu.RUnlock()
-	return h.engines[agentID]
+	if entry, ok := h.engines[agentID]; ok {
+		h.mu.RUnlock() // Briefly unlock to update timestamp
+		h.mu.Lock()
+		entry.lastUsed = time.Now()
+		h.mu.Unlock()
+		h.mu.RLock()
+		return entry.engine
+	}
+	return nil
 }
 
 // HandleDecide handles POST /api/v1/agent/decide