refactor(events): split agent event payload types

Move agent domain event payload structs out of the legacy event envelope file so the remaining EventKind/Event/EventMeta compatibility layer can be removed independently later.

Validation: go test ./pkg/agent; make lint

pkg/agent/event_payloads.go

@@ -0,0 +1,171 @@
+package agent
+
+import "time"
+
+// TurnEndStatus describes the terminal state of a turn.
+type TurnEndStatus string
+
+const (
+	// TurnEndStatusCompleted indicates the turn finished normally.
+	TurnEndStatusCompleted TurnEndStatus = "completed"
+	// TurnEndStatusError indicates the turn ended because of an error.
+	TurnEndStatusError TurnEndStatus = "error"
+	// TurnEndStatusAborted indicates the turn was hard-aborted and rolled back.
+	TurnEndStatusAborted TurnEndStatus = "aborted"
+)
+
+// TurnStartPayload describes the start of a turn.
+type TurnStartPayload struct {
+	UserMessage string
+	MediaCount  int
+}
+
+// TurnEndPayload describes the completion of a turn.
+type TurnEndPayload struct {
+	Status          TurnEndStatus
+	Iterations      int
+	Duration        time.Duration
+	FinalContentLen int
+}
+
+// LLMRequestPayload describes an outbound LLM request.
+type LLMRequestPayload struct {
+	Model         string
+	MessagesCount int
+	ToolsCount    int
+	MaxTokens     int
+	Temperature   float64
+}
+
+// LLMResponsePayload describes an inbound LLM response.
+type LLMResponsePayload struct {
+	ContentLen   int
+	ToolCalls    int
+	HasReasoning bool
+}
+
+// LLMDeltaPayload describes a streamed LLM delta.
+type LLMDeltaPayload struct {
+	ContentDeltaLen   int
+	ReasoningDeltaLen int
+}
+
+// LLMRetryPayload describes a retry of an LLM request.
+type LLMRetryPayload struct {
+	Attempt    int
+	MaxRetries int
+	Reason     string
+	Error      string
+	Backoff    time.Duration
+}
+
+// ContextCompressReason identifies why emergency compression ran.
+type ContextCompressReason string
+
+const (
+	// ContextCompressReasonProactive indicates compression before the first LLM call.
+	ContextCompressReasonProactive ContextCompressReason = "proactive_budget"
+	// ContextCompressReasonRetry indicates compression during context-error retry handling.
+	ContextCompressReasonRetry ContextCompressReason = "llm_retry"
+	// ContextCompressReasonSummarize indicates post-turn async summarization.
+	ContextCompressReasonSummarize ContextCompressReason = "summarize"
+)
+
+// ContextCompressPayload describes a forced history compression.
+type ContextCompressPayload struct {
+	Reason            ContextCompressReason
+	DroppedMessages   int
+	RemainingMessages int
+}
+
+// SessionSummarizePayload describes a completed async session summarization.
+type SessionSummarizePayload struct {
+	SummarizedMessages int
+	KeptMessages       int
+	SummaryLen         int
+	OmittedOversized   bool
+}
+
+// ToolExecStartPayload describes a tool execution request.
+type ToolExecStartPayload struct {
+	Tool      string
+	Arguments map[string]any
+}
+
+// ToolExecEndPayload describes the outcome of a tool execution.
+type ToolExecEndPayload struct {
+	Tool       string
+	Duration   time.Duration
+	ForLLMLen  int
+	ForUserLen int
+	IsError    bool
+	Async      bool
+}
+
+// ToolExecSkippedPayload describes a skipped tool call.
+type ToolExecSkippedPayload struct {
+	Tool   string
+	Reason string
+}
+
+// SteeringInjectedPayload describes steering messages appended before the next LLM call.
+type SteeringInjectedPayload struct {
+	Count           int
+	TotalContentLen int
+}
+
+// FollowUpQueuedPayload describes an async follow-up queued back into the inbound bus.
+type FollowUpQueuedPayload struct {
+	SourceTool string
+	ContentLen int
+}
+
+type InterruptKind string
+
+const (
+	InterruptKindSteering InterruptKind = "steering"
+	InterruptKindGraceful InterruptKind = "graceful"
+	InterruptKindHard     InterruptKind = "hard_abort"
+)
+
+// InterruptReceivedPayload describes accepted turn-control input.
+type InterruptReceivedPayload struct {
+	Kind       InterruptKind
+	Role       string
+	ContentLen int
+	QueueDepth int
+	HintLen    int
+}
+
+// SubTurnSpawnPayload describes the creation of a child turn.
+type SubTurnSpawnPayload struct {
+	AgentID      string
+	Label        string
+	ParentTurnID string
+}
+
+// SubTurnEndPayload describes the completion of a child turn.
+type SubTurnEndPayload struct {
+	AgentID string
+	Status  string
+}
+
+// SubTurnResultDeliveredPayload describes delivery of a sub-turn result.
+type SubTurnResultDeliveredPayload struct {
+	TargetChannel string
+	TargetChatID  string
+	ContentLen    int
+}
+
+// SubTurnOrphanPayload describes a sub-turn result that could not be delivered.
+type SubTurnOrphanPayload struct {
+	ParentTurnID string
+	ChildTurnID  string
+	Reason       string
+}
+
+// ErrorPayload describes an execution error inside the agent loop.
+type ErrorPayload struct {
+	Stage   string
+	Message string
+}

pkg/agent/events.go

@@ -108,171 +108,3 @@ type EventMeta struct {
 	Source       string
 	turnContext  *TurnContext
 }
-
-// TurnEndStatus describes the terminal state of a turn.
-type TurnEndStatus string
-
-const (
-	// TurnEndStatusCompleted indicates the turn finished normally.
-	TurnEndStatusCompleted TurnEndStatus = "completed"
-	// TurnEndStatusError indicates the turn ended because of an error.
-	TurnEndStatusError TurnEndStatus = "error"
-	// TurnEndStatusAborted indicates the turn was hard-aborted and rolled back.
-	TurnEndStatusAborted TurnEndStatus = "aborted"
-)
-
-// TurnStartPayload describes the start of a turn.
-type TurnStartPayload struct {
-	UserMessage string
-	MediaCount  int
-}
-
-// TurnEndPayload describes the completion of a turn.
-type TurnEndPayload struct {
-	Status          TurnEndStatus
-	Iterations      int
-	Duration        time.Duration
-	FinalContentLen int
-}
-
-// LLMRequestPayload describes an outbound LLM request.
-type LLMRequestPayload struct {
-	Model         string
-	MessagesCount int
-	ToolsCount    int
-	MaxTokens     int
-	Temperature   float64
-}
-
-// LLMResponsePayload describes an inbound LLM response.
-type LLMResponsePayload struct {
-	ContentLen   int
-	ToolCalls    int
-	HasReasoning bool
-}
-
-// LLMDeltaPayload describes a streamed LLM delta.
-type LLMDeltaPayload struct {
-	ContentDeltaLen   int
-	ReasoningDeltaLen int
-}
-
-// LLMRetryPayload describes a retry of an LLM request.
-type LLMRetryPayload struct {
-	Attempt    int
-	MaxRetries int
-	Reason     string
-	Error      string
-	Backoff    time.Duration
-}
-
-// ContextCompressReason identifies why emergency compression ran.
-type ContextCompressReason string
-
-const (
-	// ContextCompressReasonProactive indicates compression before the first LLM call.
-	ContextCompressReasonProactive ContextCompressReason = "proactive_budget"
-	// ContextCompressReasonRetry indicates compression during context-error retry handling.
-	ContextCompressReasonRetry ContextCompressReason = "llm_retry"
-	// ContextCompressReasonSummarize indicates post-turn async summarization.
-	ContextCompressReasonSummarize ContextCompressReason = "summarize"
-)
-
-// ContextCompressPayload describes a forced history compression.
-type ContextCompressPayload struct {
-	Reason            ContextCompressReason
-	DroppedMessages   int
-	RemainingMessages int
-}
-
-// SessionSummarizePayload describes a completed async session summarization.
-type SessionSummarizePayload struct {
-	SummarizedMessages int
-	KeptMessages       int
-	SummaryLen         int
-	OmittedOversized   bool
-}
-
-// ToolExecStartPayload describes a tool execution request.
-type ToolExecStartPayload struct {
-	Tool      string
-	Arguments map[string]any
-}
-
-// ToolExecEndPayload describes the outcome of a tool execution.
-type ToolExecEndPayload struct {
-	Tool       string
-	Duration   time.Duration
-	ForLLMLen  int
-	ForUserLen int
-	IsError    bool
-	Async      bool
-}
-
-// ToolExecSkippedPayload describes a skipped tool call.
-type ToolExecSkippedPayload struct {
-	Tool   string
-	Reason string
-}
-
-// SteeringInjectedPayload describes steering messages appended before the next LLM call.
-type SteeringInjectedPayload struct {
-	Count           int
-	TotalContentLen int
-}
-
-// FollowUpQueuedPayload describes an async follow-up queued back into the inbound bus.
-type FollowUpQueuedPayload struct {
-	SourceTool string
-	ContentLen int
-}
-
-type InterruptKind string
-
-const (
-	InterruptKindSteering InterruptKind = "steering"
-	InterruptKindGraceful InterruptKind = "graceful"
-	InterruptKindHard     InterruptKind = "hard_abort"
-)
-
-// InterruptReceivedPayload describes accepted turn-control input.
-type InterruptReceivedPayload struct {
-	Kind       InterruptKind
-	Role       string
-	ContentLen int
-	QueueDepth int
-	HintLen    int
-}
-
-// SubTurnSpawnPayload describes the creation of a child turn.
-type SubTurnSpawnPayload struct {
-	AgentID      string
-	Label        string
-	ParentTurnID string
-}
-
-// SubTurnEndPayload describes the completion of a child turn.
-type SubTurnEndPayload struct {
-	AgentID string
-	Status  string
-}
-
-// SubTurnResultDeliveredPayload describes delivery of a sub-turn result.
-type SubTurnResultDeliveredPayload struct {
-	TargetChannel string
-	TargetChatID  string
-	ContentLen    int
-}
-
-// SubTurnOrphanPayload describes a sub-turn result that could not be delivered.
-type SubTurnOrphanPayload struct {
-	ParentTurnID string
-	ChildTurnID  string
-	Reason       string
-}
-
-// ErrorPayload describes an execution error inside the agent loop.
-type ErrorPayload struct {
-	Stage   string
-	Message string
-}