v9.59 2026-06-19 WeKan ® release

This release adds the following features:

• Release All Platforms: Fix duplicate mapping keys in generated OpenAPI spec that broke API docs rendering.
  The Release All Platforms bump job regenerates public/api/wekan.yml
  via openapi/generate_openapi.py and then renders it with @redocly/cli,
  whose strict YAML parser rejects duplicate mapping keys. The 3-level nested
  SimpleSchema in models/attachmentStorageSettings.js
  (storageConfig.filesystem.enabled, storageConfig.gridfs.enabled, …)
  exposed two generator bugs: the sub-schema name was derived from only the
  first dotted path segment, collapsing filesystem.* and gridfs.* leaf
  keys (enabled/read/write) into one mapping; and the linear emitter
  reopened the parent schema header for each interleaved nested object. The
  generator now builds sub-schema names from all leading path segments and
  groups each sub-schema's fields contiguously, so deeply nested objects emit
  distinct, valid sub-schemas. Output is unchanged for existing 1- and
  2-level schemas.
  Thanks to xet7 and Claude.

Thanks to GitHub users for their contributions.