current-sheet

# Resolve "this one" The dev server publishes the reader's position to `node_modules/.open-sheet/current.json` as they navigate: ```json { "id": "fy26-budget", "sheet": "P&L", "cell": "B7", "updatedAt": "2026-08-18T…" } ``` Read that file, or `GET http://localhost:5373/__open-sheet/api/current`. ## Using it 1. Read the file. If it is missing or `updatedAt` is old, the dev server is probably not running — ask which workbook rather than guessing. 2. `id` gives you `sheets/<id>/index.tsx`. 3. `cell` is an A1 address **for reading only**. It tells you where the user is pointing; it is not something to write into the source. ## Turning a cell into a source location The user points at a cell; you have to edit the block that produced it. Open the workbook and work out which block covers that address — usually obvious from the sheet's structure — then change the **authoring** construct: | The user says | You change | | --- | --- | | "this number is wrong" | the value in the `data` array, or the `formula` | | "make this a percentage" | `format` on that column | | "this column should be a bar" | `bar: true` on that column | | "this total is wrong" | the `total` aggregate, or the formula feeding it | Never respond by writing an address into the file. If you find yourself wanting to, re-read `sheet-authoring`.