feat(wp7-02): support Gemini chat image relay

scripts/lib/wp7-02-controlled-executor.mjs

@@ -26,7 +26,7 @@ function assertModelConfig(modelConfig) {
   const profile = modelConfig.route_profile;
   if (!profile || typeof profile !== "object" || typeof profile.endpoint !== "string"
     || !profile.endpoint.startsWith("https://oneapi.intelligrow.cn/")
-    || !["gemini-interactions-v1beta", "gemini-native-v1beta", "openai-images-v1"].includes(profile.protocol_version)) {
+    || !["gemini-interactions-v1beta", "gemini-native-v1beta", "gemini-openai-chat-v1", "openai-images-v1"].includes(profile.protocol_version)) {
     throw new Error("WP7_02_ROUTE_PROFILE_INVALID");
   }
   if (profile.protocol_version === "gemini-interactions-v1beta"
@@ -34,6 +34,11 @@ function assertModelConfig(modelConfig) {
       || profile.provider_model_id !== "gemini-3.1-flash-image")) {
     throw new Error("WP7_02_ROUTE_PROFILE_INVALID");
   }
+  if (profile.protocol_version === "gemini-openai-chat-v1"
+    && (profile.endpoint !== "https://oneapi.intelligrow.cn/v1/chat/completions"
+      || profile.provider_model_id !== "gemini-3.1-flash-image")) {
+    throw new Error("WP7_02_ROUTE_PROFILE_INVALID");
+  }
   if (profile.protocol_version === "openai-images-v1"
     && (profile.reference_endpoint !== "https://oneapi.intelligrow.cn/v1/images/edits")) {
     throw new Error("WP7_02_REFERENCE_ROUTE_PROFILE_INVALID");
@@ -108,6 +113,28 @@ export function buildProviderRequest({ modelConfig, prompt, ratio, reference })
       url: config.route_profile.endpoint,
     };
   }
+  if (config.route_profile.protocol_version === "gemini-openai-chat-v1") {
+    const content = reference
+      ? [
+          { text: prompt, type: "text" },
+          {
+            image_url: { url: `data:${reference.mime_type};base64,${reference.bytes.toString("base64")}` },
+            type: "image_url",
+          },
+        ]
+      : prompt;
+    return {
+      body: {
+        extra_body: { google: { image_config: { aspect_ratio: ratio, image_size: "1K" } } },
+        messages: [{ content, role: "user" }],
+        model: config.route_profile.provider_model_id,
+        stream: false,
+      },
+      headers,
+      method: "POST",
+      url: config.route_profile.endpoint,
+    };
+  }
   const providerModelId = config.route_profile.provider_model_id ?? config.model_id;
   const body = {
     model: providerModelId,
@@ -193,12 +220,20 @@ function geminiUsage(response) {
 function openAiUsage(response) {
   const usage = response?.usage;
   return {
-    input_units: integerOrZero(usage?.input_tokens ?? usage?.inputTokens),
+    input_units: integerOrZero(usage?.input_tokens ?? usage?.inputTokens ?? usage?.prompt_tokens ?? usage?.promptTokens),
-    output_units: integerOrZero(usage?.output_tokens ?? usage?.outputTokens),
+    output_units: integerOrZero(usage?.output_tokens ?? usage?.outputTokens ?? usage?.completion_tokens ?? usage?.completionTokens),
     total_units: integerOrZero(usage?.total_tokens ?? usage?.totalTokens),
   };
 }
 
+function openAiChatImage(response) {
+  const content = response?.choices?.[0]?.message?.content;
+  if (typeof content !== "string") throw new Error("WP7_02_RESPONSE_SINGLE_IMAGE_REQUIRED");
+  const matches = [...content.matchAll(/!\[[^\]]*\]\(\s*data:(image\/(?:jpeg|png|webp));base64,([A-Za-z0-9+/=\r\n]+)\s*\)/gi)];
+  if (matches.length !== 1) throw new Error("WP7_02_RESPONSE_SINGLE_IMAGE_REQUIRED");
+  return { data: matches[0][2], mime: matches[0][1].toLowerCase() };
+}
+
 function interactionUsage(response) {
   const usage = response?.usage;
   return {
@@ -230,6 +265,11 @@ export function normalizeProviderResponse(modelConfig, response) {
     mime = images[0].mimeType ?? images[0].mime_type;
     bytes = Buffer.from(images[0].data, "base64");
     usageSummary = geminiUsage(response);
+  } else if (config.route_profile.protocol_version === "gemini-openai-chat-v1") {
+    const image = openAiChatImage(response);
+    bytes = Buffer.from(image.data, "base64");
+    mime = image.mime;
+    usageSummary = openAiUsage(response);
   } else {
     if (!Array.isArray(response?.data) || response.data.length !== 1 || typeof response.data[0]?.b64_json !== "string") {
       throw new Error("WP7_02_RESPONSE_SINGLE_IMAGE_REQUIRED");