feat: update to open api version 235.20.1

[oliverlaz]

Regenerates the client from the chat serverside spec at v235.20.1 (previously v235.16.3, #328). Generated from the chat working tree at v235.20.1-91-g6c6373e6cd, so it also picks up spec changes merged after that tag.

Chat: pinned messages

• ChatApi.getPinnedMessages — GET /chat/channels/{type}/{id}/pinned_messages, with both id and pinned_at cursor pagination (id_gt/id_gte/id_lt/id_lte/id_around, pinned_at_after/pinned_at_after_or_equal/pinned_at_before/pinned_at_before_or_equal/pinned_at_around), plus limit, offset, sort, member_custom_include and user_id.
• Channel.getPinnedMessages convenience wrapper on ChannelApi.
• Model: GetPinnedMessagesResponse (messages: MessageResponse[]).

Chat: predefined filters

Named, server-stored filters for QueryChannels:

• ChatApi.createPredefinedFilter — POST /chat/predefined_filters
• ChatApi.getPredefinedFilters — GET /chat/predefined_filters (optional include_stats, sort)
• ChatApi.getPredefinedFilter / updatePredefinedFilter / deletePredefinedFilter — GET|PUT|DELETE /chat/predefined_filters/{name}

Models: CreatePredefinedFilterRequest, CreatePredefinedFilterResponse, UpdatePredefinedFilterRequest, UpdatePredefinedFilterResponse, GetPredefinedFilterResponse, QueryPredefinedFiltersResponse, PredefinedFilterResponse, PredefinedFilterStatsResponse (calls, max_latency_ms, last_seen), PerformanceAnalysisResponse (index/scan analysis with score, recommendations, unindexed_fields, unindexed_sort_fields, warnings), SortParam.

Permissions: custom permission CRUD

• CommonApi.createPermission — POST /permissions
• CommonApi.updatePermission — PUT /permissions/{id}
• CommonApi.deletePermission — DELETE /permissions/{id}

Model: PermissionRequest (action, name, description, owner, same_team, condition). getPermission and listPermissions already existed.

Other additions

• getOrCreateChannel (ChatApi and ChannelApi) accepts user_id.
• QueryTeamUsageStatsRequest.team — filter results to a single team ID; empty string selects users not assigned to any team; mutually exclusive with next.
• ModerationPayload.other_media and ModerationPayloadResponse.other_media — media URLs from attachments outside the typed image/video/audio lists (custom attachment types such as GIF pickers).

Documentation-only spec changes

• The moderation restore action is now documented as state-aware: it reverses whichever of a delete, a block, or a shadow block currently applies (including both at once). unblock is marked deprecated in favour of it.
• push_types is clarified as an allowlist — empty or omitted means no types trigger push.

Codegen churn (no behaviour change)

Most of the diff is the generator's output style changing:

• T[] → Array<T> in model and request types
• decoders.X → decoders['X']
• Record<string, any> → { [key: string]: any } in decoder signatures

Normalizing those three patterns away shrinks the diff from ~4,450 changed lines to ~500, all accounted for above. FeedsApi and ModerationApi have no semantic change at all; VideoApi only reflows one call.

⚠️ Breaking changes

None. No endpoints, models, or fields were removed, no signatures changed, and no optionality changed.

Verification

• yarn lint — clean
• yarn build — succeeds (vite bundles + tsc --emitDeclarationOnly)