- Use consistent logic for all model type handlers
- Fix bug where we could select invalid upscaling models (not sure how this hadn't caused problems...)
- Add logging for each action
- Only reset models when there is a change to be made - skip dispatching actions when there would be no change made to state
Previously the setting was `showOnlyRasterLayersWhileStaging`. This has been renamed to `isolatedStagingPreview`. Works the same.
Also added `isolatedFilteringPreview` an `isolatedTransformingPreview`. These work the same way, but they isolate the current selected layer. There are toggles in the canvas settings popover _and_ the filter/transform popups (same setting).
We need to ensure the getQueueCountsByDestination query is sync'd, invalidating its tags as queue items complete. Unfortunately it's 2 extra network requests per queue item.
Also clean up some jank w/ the handling of accepting staging images - there was this no-op action & a listener for it... should just be a simple callback.
Both the vanilla and autoscale invocations report progress while processing each tile.
The autoscale version, which may run the spandrel model multiple times, also includes the current iteration.
Each of these was a bit off:
- The SD callback started at `-1` and ended at `i`. Combined w/ the weird math on the previous `calc_percentage` util, this caused the progress bar to never finish.
- The MultiDiffusion callback had the same problems as SD.
- The FLUX callback didn't emit a pre-denoising step 0 image. It also reported total_steps as 1 higher than the actual step count.
Each of these now emit the expected events to the frontend:
- The initial latents at 0%
- Progress at each step, ending at 100%
- Update the step callback methods in the invocation API to use the new signal_progress API
- Copy and update the `calc_percentage`, reducing special handling for step and total_steps - a followup commit will fix callers of the step callbacks
