Feat v0.6.15 user display audit (#50)

Co-authored-by: Jeffrey Smith <jasafpro@gmail.com>
Co-committed-by: Jeffrey Smith <jasafpro@gmail.com>

server/handlers/presence.go

@@ -81,3 +81,38 @@ func (h *PresenceHandler) SearchUsers(c *gin.Context) {
 	}
 	c.JSON(http.StatusOK, gin.H{"data": results})
 }
+
+// ResolveUsers returns identity records for a batch of user IDs.
+// GET /api/v1/users/resolve?ids=uuid1,uuid2,...
+func (h *PresenceHandler) ResolveUsers(c *gin.Context) {
+	raw := strings.TrimSpace(c.Query("ids"))
+	if raw == "" {
+		c.JSON(http.StatusOK, gin.H{"data": map[string]interface{}{}})
+		return
+	}
+
+	ids := make([]string, 0)
+	for _, id := range strings.Split(raw, ",") {
+		id = strings.TrimSpace(id)
+		if id != "" {
+			ids = append(ids, id)
+		}
+	}
+	if len(ids) == 0 {
+		c.JSON(http.StatusOK, gin.H{"data": map[string]interface{}{}})
+		return
+	}
+
+	results, err := h.stores.Users.ResolveByIDs(c.Request.Context(), ids)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "resolve failed"})
+		return
+	}
+
+	// Build map keyed by user ID for O(1) client-side lookups
+	m := make(map[string]interface{}, len(results))
+	for _, u := range results {
+		m[u.ID] = u
+	}
+	c.JSON(http.StatusOK, gin.H{"data": m})
+}