Enhance Store DX: Add initRecord() to return Model instance on add

Input from Neo.mjs Agent:

◆ I have implemented the fix with a slight variation from the original proposal to improve code clarity and safety.

Implementation Details:

1. Neo.data.Store: Added the initRecord(data) method.

   • It does not call add(). Instead, it assumes the data is already present in the store (as a plain object), looks up its key using getKeyProperty(), and returns the fully instantiated Model via get().
   • This separates the concern of "adding data" from "initializing a record".

2. Neo.calendar.view.week.plugin.DragDrop:

   • In onColumnDragStart, I introduced a new variable recordData to hold the plain object returned by owner.eventStore.add().
   • This prevents shadowing the method's data argument (which contains the drag event info).
   • I then call record = owner.eventStore.initRecord(recordData) to obtain the record instance required by EventDragZone.

Code Changes: src/data/Store.mjs:

    /**
     * Adds a new item to the store and immediately returns its record instance.
     * @param {Object} data The data object to add
     * @returns {Neo.data.Model} The created record
     */
    initRecord(data) {
        return this.get(data[this.getKeyProperty()])
    }

src/calendar/view/week/plugin/DragDrop.mjs:

            // ...
            recordData = owner.eventStore.add({
                // ...
            })[0];

        record = owner.eventStore.initRecord(recordData);
        // ...