feat(agent): add Projects + Compliance agents, webhook notifications

- Add AgentFAB to ProjectsPage and CompliancePage
- Add AgentWebhookNotifier for agent events (activated, message, escalation, error)
- Webhook URL configurable via AGENT_WEBHOOK_URL env var
- Build fresh web-v2 dist

backend/handlers/agent_webhook.go

@@ -0,0 +1,118 @@
+package handlers
+
+import (
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"time"
+
+	"github.com/rs/zerolog/log"
+)
+
+// AgentWebhookEvent representerar en agent-händelse
+type AgentWebhookEvent struct {
+	EventType   string                 `json:"event_type"`
+	AgentRum    string                 `json:"agent_rum"`
+	Timestamp   string                 `json:"timestamp"`
+	UserID      string                 `json:"user_id,omitempty"`
+	Payload     map[string]interface{} `json:"payload"`
+}
+
+// AgentWebhookNotifier skickar agent-händelser till konfigurerade webhooks
+type AgentWebhookNotifier struct {
+	webhookURL string
+	client     *http.Client
+	enabled    bool
+}
+
+// NewAgentWebhookNotifier skapar en ny notifier
+func NewAgentWebhookNotifier(webhookURL string) *AgentWebhookNotifier {
+	return &AgentWebhookNotifier{
+		webhookURL: webhookURL,
+		client:     &http.Client{Timeout: 10 * time.Second},
+		enabled:    webhookURL != "",
+	}
+}
+
+// Notify skickar en händelse till webhook
+func (n *AgentWebhookNotifier) Notify(event AgentWebhookEvent) {
+	if !n.enabled {
+		return
+	}
+
+	event.Timestamp = time.Now().Format(time.RFC3339)
+
+	jsonData, err := json.Marshal(event)
+	if err != nil {
+		log.Error().Err(err).Str("event", event.EventType).Msg("Failed to marshal webhook event")
+		return
+	}
+
+	go func() {
+		resp, err := n.client.Post(n.webhookURL, "application/json", bytes.NewBuffer(jsonData))
+		if err != nil {
+			log.Warn().Err(err).Str("url", n.webhookURL).Msg("Webhook delivery failed")
+			return
+		}
+		defer resp.Body.Close()
+
+		if resp.StatusCode >= 400 {
+			log.Warn().Int("status", resp.StatusCode).Str("url", n.webhookURL).Msg("Webhook returned error")
+		}
+	}()
+}
+
+// NotifyAgentActivated skickas när en agent aktiveras
+func (n *AgentWebhookNotifier) NotifyAgentActivated(rum, userID string) {
+	n.Notify(AgentWebhookEvent{
+		EventType: "agent.activated",
+		AgentRum:  rum,
+		UserID:    userID,
+		Payload: map[string]interface{}{
+			"rum":     rum,
+			"user_id": userID,
+		},
+	})
+}
+
+// NotifyAgentMessage skickas när en agent skickar ett meddelande
+func (n *AgentWebhookNotifier) NotifyAgentMessage(rum, userID, messageType string) {
+	n.Notify(AgentWebhookEvent{
+		EventType: "agent.message",
+		AgentRum:  rum,
+		UserID:    userID,
+		Payload: map[string]interface{}{
+			"rum":          rum,
+			"user_id":      userID,
+			"message_type": messageType,
+		},
+	})
+}
+
+// NotifyAgentEscalation skickas när en agent eskalerar
+func (n *AgentWebhookNotifier) NotifyAgentEscalation(rum, userID, reason string) {
+	n.Notify(AgentWebhookEvent{
+		EventType: "agent.escalation",
+		AgentRum:  rum,
+		UserID:    userID,
+		Payload: map[string]interface{}{
+			"rum":     rum,
+			"user_id": userID,
+			"reason":  reason,
+		},
+	})
+}
+
+// NotifyAgentError skickas när en agent stöter på ett fel
+func (n *AgentWebhookNotifier) NotifyAgentError(rum, userID, errorMsg string) {
+	n.Notify(AgentWebhookEvent{
+		EventType: "agent.error",
+		AgentRum:  rum,
+		UserID:    userID,
+		Payload: map[string]interface{}{
+			"rum":      rum,
+			"user_id":  userID,
+			"error":    errorMsg,
+		},
+	})
+}