@shadow-garden/bapbong-input-bridge

The canvas can't receive text input, so this package wraps a hidden ProseMirror EditorView (a real, visually-invisible contenteditable) as the input sink. The browser delivers keyboard and IME composition (Vietnamese, CJK, …) to it; ProseMirror owns the document, undo history and clipboard. Every transaction fires onUpdate, where the host re-runs layout and repaints.

• Scope: scope:input
• Depends on: @shadow-garden/bapbong-model, prosemirror-{state,view,model,commands,keymap,history,transform}

What it provides

• InputBridge — the hidden editor: state, dispatch(tr), setSelection, selectWordAt, place(x, y, h) (anchors the IME popup at the caret), focus.
• Layout-aware commands: moveCaretCommand, splitListItem, wordRangeAt.
• Comment authoring (undoable transactions on doc.attrs.comments): addCommentTr, replyCommentTr, resolveCommentTr, editCommentTr, deleteCommentTr.
• CommentComposer — a small standalone PM editor for comment bodies, with an optional @mention suggestion plugin (MentionHandlers / MentionUser / MentionCoords), a placeholder, and onEnter / onEscape hooks.

const bridge = new InputBridge({ doc, keys: { ArrowUp, ArrowDown }, onUpdate: repaint });
container.appendChild(bridge.dom);
bridge.setSelection(pos); bridge.focus(); bridge.place(x, y, h);

Build / test

pnpm nx build @shadow-garden/bapbong-input-bridge
pnpm nx test  @shadow-garden/bapbong-input-bridge