# 0013: Remove batch Nano Banana random image selection

- Status: Accepted
- Date: 2026-09-24
- Owners: Maintainers

## Context

The batch Nano Banana path selector exposed `图片随机抽取`. A selected path became a random image pool instead of participating in ordinary image pairing. Removing the control changes both serialized dynamic widgets and task assembly.

## Decision

Remove the random-selection widget and its pool-loading and image-draw logic. All filled folder paths now participate in the selected pairing mode. Keep the node ID, path selector, pairing choices, fixed references, save controls, and seed.

## Compatibility

The frontend drops the former widget value after applying older layout migrations. It removes a connected random-selection input and its graph link and shifts later target slot indices. API workflows that still send the retired value have it ignored. An old workflow with multiple paths and `不配对` must select a pairing mode before running; the node reports this rather than silently choosing one.

## Validation

Offline node tests cover schema and execution forwarding. Frontend tests cover saved one-path and multi-path widget arrays, idempotence, and connected-input link cleanup.