Clarify run-if skip reasons with the resolved variable value.

Failed conditions now explain skips in plain language (e.g. UpdateCount was 0) and truncate long captures so misconfigured apt listings cannot flood the UI.

service/internal/settings/types.go

@@ -128,15 +128,16 @@ type ActionEnvVar struct {
 
 // Action is a named shell command or script that can run on managed nodes.
 type Action struct {
-	ID          string         `json:"id"`
-	Name        string         `json:"name"`
-	Description string         `json:"description"`
-	Kind        ActionKind     `json:"kind"`
-	Body        string         `json:"body"`
-	Env         []ActionEnvVar `json:"env"`
-	Builtin     bool           `json:"builtin"`
-	CreatedAt   time.Time      `json:"created_at"`
-	UpdatedAt   time.Time      `json:"updated_at"`
+	ID           string         `json:"id"`
+	Name         string         `json:"name"`
+	Description  string         `json:"description"`
+	Kind         ActionKind     `json:"kind"`
+	Body         string         `json:"body"`
+	Env          []ActionEnvVar `json:"env"`
+	RequiresSudo bool           `json:"requires_sudo"`
+	Builtin      bool           `json:"builtin"`
+	CreatedAt    time.Time      `json:"created_at"`
+	UpdatedAt    time.Time      `json:"updated_at"`
 }
 
 // ActionStore is the plain JSON payload in actions.json.
@@ -184,6 +185,9 @@ type NodeActionItem struct {
 	Kind            ActionKind       `json:"kind,omitempty"`
 	Body            string           `json:"body,omitempty"`
 	Env             []ActionEnvVar   `json:"env,omitempty"`
+	RequiresSudo    bool             `json:"requires_sudo,omitempty"` // local items; library refs inherit from library
+	SetVariable     string           `json:"set_variable,omitempty"`  // capture trimmed stdout into this run-scoped name
+	RunIf           string           `json:"run_if,omitempty"`        // e.g. "if $UpdateCount >= 1"
 }
 
 // NodeActionGroup is a named ordered set of actions with one schedule on a node.
@@ -213,15 +217,22 @@ const (
 
 // ActionItemRunResult is the captured output of one action within a run.
 type ActionItemRunResult struct {
-	ItemID     string     `json:"item_id"`
-	ActionName string     `json:"action_name"`
-	Source     string     `json:"source"`
-	ExitCode   int        `json:"exit_code"`
-	Stdout     string     `json:"stdout"`
-	Stderr     string     `json:"stderr"`
-	Error      string     `json:"error,omitempty"`
-	StartedAt  time.Time  `json:"started_at"`
-	FinishedAt time.Time  `json:"finished_at"`
+	ItemID         string     `json:"item_id"`
+	ActionName     string     `json:"action_name"`
+	Source         string     `json:"source"`
+	Kind           ActionKind `json:"kind,omitempty"`
+	RemoteCommand  string     `json:"remote_command,omitempty"`
+	SSHUsername    string     `json:"ssh_username,omitempty"`
+	ExitCode       int        `json:"exit_code"`
+	Stdout         string     `json:"stdout"`
+	Stderr         string     `json:"stderr"`
+	Error          string     `json:"error,omitempty"`
+	Skipped        bool       `json:"skipped,omitempty"`
+	SkipReason     string     `json:"skip_reason,omitempty"`
+	SetVariable    string     `json:"set_variable,omitempty"`
+	VariableValue  string     `json:"variable_value,omitempty"`
+	StartedAt      time.Time  `json:"started_at"`
+	FinishedAt     time.Time  `json:"finished_at"`
 }
 
 // ActionGroupRunRecord is one execution of a group (or a single-item manual run).