From 1b3545abb2cdbba3eb3b147781770bdfffc7b832 Mon Sep 17 00:00:00 2001
From: PJ <ipriyanshujain@gmail.com>
Date: Fri, 12 Jun 2026 10:29:09 +0530
Subject: [PATCH] feat(trace): record action Source and LLMReasoning

---
 internal/trace/writer.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/internal/trace/writer.go b/internal/trace/writer.go
index 970d8be..77f10a2 100644
--- a/internal/trace/writer.go
+++ b/internal/trace/writer.go
@@ -82,6 +82,11 @@ type Action struct {
 	Selector       string        `json:"selector,omitempty"`
 	ResolvedBounds *BoundsRecord `json:"resolved_bounds,omitempty"`
 	TapPoint       *PointRecord  `json:"tap_point,omitempty"`
+	// Source names the backend that chose this action: "llm" when the LLM
+	// action backend selected it, empty for the seeded picker. LLMReasoning is
+	// the model's short rationale, shown by the replay UI to explain the pick.
+	Source       string `json:"source,omitempty"`
+	LLMReasoning string `json:"llm_reasoning,omitempty"`
 }
 
 type BoundsRecord struct {