Add multi-image support for Seedream45 Edit

web/docs/KIE_Seedream45_Edit.md

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+## KIE Seedream 4.5 Edit
+
+Edit an input image (or batch of images) using Seedream 4.5.
+
+### Inputs
+- **prompt** (STRING, required): Edit prompt text (max 3000 chars).
+- **images** (IMAGE, required): Source image batch. Up to 14 images are uploaded; extra images are ignored.
+- **aspect_ratio** (COMBO, optional): `1:1`, `4:3`, `3:4`, `16:9`, `9:16`, `2:3`, `3:2`, `21:9` (default: `1:1`).
+- **quality** (COMBO, optional): `basic`, `high` (default: `basic`).
+- **log** (BOOLEAN, optional): Enable helper logging (default: `true`).
+
+### Outputs
+- **IMAGE**: ComfyUI image tensor (BHWC float32, 0..1).
+
+### Helper behavior
+- Uploads up to 14 images and sends all uploaded URLs in `input.image_urls`.
+- If more than 14 images are provided, only the first 14 are used and a log message is emitted.