Handle Gemini inline data in asset and size processing

apps/api/internal/httpapi/request_preparation.go

@@ -533,7 +533,8 @@ func strictRequestBase64Field(key string, path []string) bool {
 		lower == "b64" ||
 		strings.Contains(lower, "base64") ||
 		strings.Contains(lower, "_b64") ||
-		(parent == "input_audio" && lower == "data")
+		(parent == "input_audio" && lower == "data") ||
+		((parent == "inlinedata" || parent == "inline_data") && lower == "data")
 }
 
 func likelyRequestBase64MediaField(key string, path []string, value string) bool {

apps/api/internal/httpapi/request_preparation_test.go

@@ -37,6 +37,22 @@ func TestRequestAssetFromValueDetectsDataURLAndRawBase64(t *testing.T) {
 	}
 }
 
+func TestRequestAssetFromValueDetectsGeminiInlineData(t *testing.T) {
+	payload := base64.StdEncoding.EncodeToString([]byte("inline gemini image"))
+	decoded, ok, err := requestAssetFromValue(
+		"data",
+		[]string{"contents", "[0]", "parts", "[0]", "inlineData"},
+		payload,
+		map[string]any{"mimeType": "image/png"},
+	)
+	if err != nil {
+		t.Fatalf("decode Gemini inlineData: %v", err)
+	}
+	if !ok || decoded.ContentType != "image/png" || string(decoded.Bytes) != "inline gemini image" {
+		t.Fatalf("unexpected Gemini inlineData asset: ok=%v decoded=%+v", ok, decoded)
+	}
+}
+
 func TestCanonicalConversationMessageHashUsesTextAndAssetRefs(t *testing.T) {
 	message := map[string]any{
 		"role": "user",