Changelog

Group block removal:

• Remove group from the block type picker, command routing, and

CreateBlockFromTypeId factory

• Remove AddGroupBlock command and GroupSelectedBlocks multi-select action
• Remove "Group Selected" context menu item from BlockWrapper
• Keep GroupBlock model, deserializer, and renderer for backwards

compatibility with existing pages that contain group blocks

Definition list Enter key + auto-focus:

• Add Enter key handler to DefinitionListEditor — pressing Enter in a

term TextBox inserts a new definition under that term; pressing Enter

in a definition TextBox inserts a new definition after it

• Tag each TextBox with (ItemIndex, DefIndex) tuple to identify its

position in the definition list model

• Add _pendingFocusIndex mechanism: set before RebuildItems(), applied

after rebuild via Dispatcher.Post at Loaded priority

• "Add term" and "Add definition" buttons now auto-focus the newly

created TextBox after rebuild

Slash command ("/"):

• Capture the source block index at "/" time into _slashBlockIndex,

independent of _savedBlockIndex which can become stale during debounce

• Pass the captured index to the VM via SetSlashInsertIndex() before

opening the block picker

• InsertBlockAtSelection now checks _slashInsertIndex first (highest

priority), then _savedBlockIndex, then SelectedBlockIndex

• Reduce slash debounce from 500ms to 250ms for snappier response

"+" Add block button:

• ToggleBlockPicker now calls ClearBlockSelection() before opening,

ensuring _savedBlockIndex = -1 and SelectedBlockIndex = -1

• This makes InsertBlockAtSelection fall through to the append-at-end

branch, which is the expected behavior for the bottom-of-page button

Auto-focus after insertion:

• ScrollToBlock now retries up to 2 times instead of 1 — first at

Loaded priority, then at Background priority

• The lower Background priority gives the visual tree more time to

materialize inner controls in virtualized ItemsControl containers

The ChildBlocksHost ItemsControl in BlockWrapper.axaml had a bare

ContentControl with no DataTemplates registered, so any block nested

as a child (via tree indentation or GroupBlock) would fall through to

ToString() rendering — showing raw type names like

"DefinitionListBlock { Type = definition_list, Items = ... }".

Replace the inline template-less AXAML DataTemplate with

BlockTemplateFactory.CreateBlockTemplate() set in code-behind,

which provides the full set of block content DataTemplates for all

block types including proper editor controls, Loaded/Unloaded wiring,

and drag handle support.

WebClips was the last plugin missing ISeedDataProvider, so its

web_clip, browsing_history, and transcription_job entities were

never deleted during a data wipe. Adds wipe-only implementation

(no seed data) that declares all three entity types as WipeTargets.

All plugins now implement ISeedDataProvider.

Canvas was missing ISeedDataProvider, so its whiteboard entities were

never deleted during a data wipe. This caused leftover canvas items

to persist after "wipe all data". Adds wipe-only implementation

(no seed data) that declares the whiteboard entity type as a

WipeTarget.