Update README with current features and screenshots

- Cross-platform support (Windows/Linux) with Windows Updates and Winget
- Added dependency confirmation workflow and refresh token authentication
- New screenshots: History, Live Operations, Windows Agent Details
- Local CLI features with terminal output and cache system
- Updated known limitations - Proxmox integration is broken
- Organized docs to docs/ folder and updated .gitignore
- Probably introduced a dozen bugs with Windows agents - stay tuned

aggregator-server/internal/models/command.go

@@ -33,11 +33,13 @@ type CommandItem struct {
 
 // Command types
 const (
-	CommandTypeScanUpdates   = "scan_updates"
-	CommandTypeCollectSpecs  = "collect_specs"
-	CommandTypeInstallUpdate = "install_updates"
-	CommandTypeRollback      = "rollback_update"
-	CommandTypeUpdateAgent   = "update_agent"
+	CommandTypeScanUpdates        = "scan_updates"
+	CommandTypeCollectSpecs       = "collect_specs"
+	CommandTypeInstallUpdate      = "install_updates"
+	CommandTypeDryRunUpdate       = "dry_run_update"
+	CommandTypeConfirmDependencies = "confirm_dependencies"
+	CommandTypeRollback           = "rollback_update"
+	CommandTypeUpdateAgent        = "update_agent"
 )
 
 // Command statuses
@@ -46,4 +48,22 @@ const (
 	CommandStatusSent      = "sent"
 	CommandStatusCompleted = "completed"
 	CommandStatusFailed    = "failed"
+	CommandStatusTimedOut  = "timed_out"
+	CommandStatusCancelled = "cancelled"
+	CommandStatusRunning   = "running"
 )
+
+// ActiveCommandInfo represents information about an active command for UI display
+type ActiveCommandInfo struct {
+	ID           uuid.UUID  `json:"id" db:"id"`
+	AgentID      uuid.UUID  `json:"agent_id" db:"agent_id"`
+	CommandType  string     `json:"command_type" db:"command_type"`
+	Status       string     `json:"status" db:"status"`
+	CreatedAt    time.Time  `json:"created_at" db:"created_at"`
+	SentAt       *time.Time `json:"sent_at,omitempty" db:"sent_at"`
+	CompletedAt  *time.Time `json:"completed_at,omitempty" db:"completed_at"`
+	Result       JSONB      `json:"result,omitempty" db:"result"`
+	AgentHostname string    `json:"agent_hostname" db:"agent_hostname"`
+	PackageName  string     `json:"package_name" db:"package_name"`
+	PackageType  string     `json:"package_type" db:"package_type"`
+}