feat(video): forward Token360 video options

src/types.ts

@@ -496,6 +496,24 @@ export interface VideoGenerateOptions {
   imageUrl?: string;
   /** Duration to bill for (defaults to model's default duration) */
   durationSeconds?: number;
+  /** Output aspect ratio. Token360 / Seedance only — silently ignored by xAI Grok. */
+  aspectRatio?: "adaptive" | "16:9" | "9:16" | "1:1" | "4:3" | "3:4" | "21:9" | "9:21";
+  /** Output resolution. Token360 / Seedance only. */
+  resolution?: "360p" | "480p" | "540p" | "720p" | "1080p" | "1K" | "2K" | "4K";
+  /**
+   * Whether the model should produce an audio track. Token360 / Seedance only.
+   * When omitted, the gateway does not send the flag — Token360 then applies
+   * its own upstream default (typically off, occasionally on depending on
+   * model variant / prompt). Audio generation is usually a paid surcharge,
+   * so callers should expose this as a visible toggle to their users.
+   */
+  generateAudio?: boolean;
+  /** Reproducibility seed when supported by the model. */
+  seed?: number;
+  /** Embed the upstream watermark on the output. Defaults to false at the gateway. */
+  watermark?: boolean;
+  /** Return the last frame as an image alongside the clip — useful for chaining. */
+  returnLastFrame?: boolean;
 }
 
 // Search options for standalone search endpoint

src/video.ts

@@ -115,6 +115,13 @@ export class VideoClient {
     };
     if (options?.imageUrl) body.image_url = options.imageUrl;
     if (options?.durationSeconds !== undefined) body.duration_seconds = options.durationSeconds;
+    // ── Token360 / Seedance passthroughs (gateway silently ignores for xAI) ─
+    if (options?.aspectRatio) body.aspect_ratio = options.aspectRatio;
+    if (options?.resolution) body.resolution = options.resolution;
+    if (options?.generateAudio !== undefined) body.generate_audio = options.generateAudio;
+    if (options?.seed !== undefined) body.seed = options.seed;
+    if (options?.watermark !== undefined) body.watermark = options.watermark;
+    if (options?.returnLastFrame) body.return_last_frame = true;
 
     const budgetMs = options?.budgetMs ?? DEFAULT_GENERATE_BUDGET_MS;
     return this.submitAndPoll(body, budgetMs);