From 4442400d11f352e851a5642e677ca8546e998d80 Mon Sep 17 00:00:00 2001
From: Mikael Hugo <mikkihugo@users.noreply.github.com>
Date: Sat, 16 May 2026 15:29:43 +0200
Subject: [PATCH] sf snapshot: uncommitted changes after 30m inactivity

---
 src/resources/extensions/sf/auto/run-unit.js | 43 ++++++++++++++++++--
 1 file changed, 39 insertions(+), 4 deletions(-)

diff --git a/src/resources/extensions/sf/auto/run-unit.js b/src/resources/extensions/sf/auto/run-unit.js
index 3a2963f48..8f247cd2d 100644
--- a/src/resources/extensions/sf/auto/run-unit.js
+++ b/src/resources/extensions/sf/auto/run-unit.js
@@ -1344,10 +1344,45 @@ export async function runUnit(ctx, pi, s, unitType, unitId, prompt, options) {
 			prompt,
 			promptCacheSplit,
 		);
-		await pi.sendMessage(
-			{ customType: "sf-auto", content: messageContent, display: s.verbose },
-			{ triggerTurn: true },
-		);
+		// #sf-mp8d3hfc-0rccrj: pi.sendMessage was previously awaited bare. If it
+		// threw, the error propagated but with no contextual marker about which
+		// stage failed (model selection / RPC bridge / agent receive). If it
+		// resolved but the RPC child never processed the message, the unit froze
+		// at iteration 1 with no user message in the session JSONL and no
+		// diagnostic trail. Wrap both sides for visibility.
+		const sendStartedAt = Date.now();
+		debugLog("runUnit", {
+			phase: "send-message-start",
+			unitType,
+			unitId,
+			messageContentLength:
+				typeof messageContent === "string"
+					? messageContent.length
+					: JSON.stringify(messageContent).length,
+		});
+		try {
+			await pi.sendMessage(
+				{ customType: "sf-auto", content: messageContent, display: s.verbose },
+				{ triggerTurn: true },
+			);
+		} catch (e) {
+			debugLog("runUnit", {
+				phase: "send-message-failed",
+				unitType,
+				unitId,
+				error: e && typeof e === "object" && "message" in e ? e.message : String(e),
+				stack:
+					e && typeof e === "object" && "stack" in e ? String(e.stack) : undefined,
+				elapsedMs: Date.now() - sendStartedAt,
+			});
+			throw e;
+		}
+		debugLog("runUnit", {
+			phase: "send-message-accepted",
+			unitType,
+			unitId,
+			elapsedMs: Date.now() - sendStartedAt,
+		});
 	} finally {
 		if (savedTools) {
 			pi.setActiveTools(savedTools);