From acf51e02a8817420d32874dc08ee884606e3895a Mon Sep 17 00:00:00 2001
From: Philippe Branchu <philippe@branchu.com>
Date: Sun, 22 Mar 2026 16:47:56 +0000
Subject: [PATCH] Fix Gemini driver crash on content entries without parts

Add #[serde(default)] to GeminiContent.parts so responses with
empty or missing parts arrays deserialize as empty Vec instead
of failing with "missing field parts".

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 crates/openfang-runtime/src/drivers/gemini.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crates/openfang-runtime/src/drivers/gemini.rs b/crates/openfang-runtime/src/drivers/gemini.rs
index cd37cc1b..defdebc3 100644
--- a/crates/openfang-runtime/src/drivers/gemini.rs
+++ b/crates/openfang-runtime/src/drivers/gemini.rs
@@ -60,6 +60,7 @@ struct GeminiRequest {
 struct GeminiContent {
     #[serde(skip_serializing_if = "Option::is_none")]
     role: Option<String>,
+    #[serde(default)]
     parts: Vec<GeminiPart>,
 }