Show several operators' results at once, beside their operators on the canvas #9052

Feature Summary

The result panel shows one operator's result at a time, and only while exactly one operator is selected. To compare two results, a user clicks back and forth on the canvas, and the panel empties whenever the selection does. An operator with two outputs, such as Split, can only ever show its first.

Proposed Solution or Design

As settled in #8842: hovering an operator shows a small card with its first rows. Pinning the card turns it into a window beside the operator with the full result, and several windows can be open at once. An operator with more than one output gets a tab per output in its window. The bottom panel keeps only the console.

The set, in order

• 1. Result table pages by the wrong row count for an operator with two outputs, such as Split #9050 and Read the result of any output port of an operator, not only the first #9053, reading the result of any output port, and paging an operator by its first port's row count. PR feat: read the result of any output port of an operator #9054
• 2. Preview an operator's result when hovering it on the canvas #9057, the hover preview. Needs 1. PR feat(frontend): preview an operator's result when hovering it on the canvas #9058
• 3. Pin an operator's result beside it, with a tab per output port #9062, the pinned windows, with a tab per output. Needs 2. PR feat(frontend): pin an operator's result beside it, with a tab per output port #9063
• 4. Keep only the console in the bottom panel #9059, the bottom panel keeps only the console. Needs 3 and 5. PR feat(frontend): keep only the console in the bottom panel #9060
• 5. Open the result panel at its full height inside the window #9055, the bottom panel docks 200px below the window. PR fix(frontend): open the result panel at its full height inside the window #9056

Affected Area

Workflow UI, Workflow Engine (Amber)