Replaces the synchronous reactive pipeline with a debounced worker RPC.
Slider drags and file loads no longer block the main thread.
- image-pipeline.js: pure staged pipeline (transform → resize →
color-correction → quantize). Each upstream stage keeps one cached
slot keyed on the inputs it depends on, so a single-slider change
reruns only the downstream stages.
- image-pipeline-worker.js: hosts the pipeline inside a module Worker.
Accepts set-source (transferable) and run(params). Returns indices
+ preview RGBA as transferable ArrayBuffers.
- image-pipeline-client.js: main-thread RPC with request-id tracking
and stale-response dropping.
- ImageImporter.svelte: two-tier scheduler — throttled quick request
(<=384px) for the preview panel while inputs churn, debounced full
request (180ms) for overlay/buildPixels/opaque-count on settle.
Source buffer cloned and transferred to the worker on load/resume.
Main bundle shrinks ~4KB (pipeline code now in its own worker chunk).
* feat(ui): pick-position, cooldown badge, goto, shortcuts, progressive skip, resume
- Pick-position mode: "Pick on canvas" replaces the broken "Use cursor"
button. Next left-click (no drag) sets origin; Esc or second press cancels.
- Visible cooldown on Submit: disables button + shows "Wait Xs" countdown
after a successful place or 429 response.
- Goto-coordinates: "x,y" input in CanvasControls; Enter centers the
viewport on that canvas point.
- Keyboard shortcuts: Q/E zoom, WASD pan (40px), Esc cancels pick or stroke.
Guarded against firing in focused inputs.
- Progressive skip-already-matching: uploader re-filters remaining queue
every 8 batches via an optional shouldSkip predicate.
- Auto-save + resume: new image-job-storage module (localStorage + PNG
dataURL); uploader emits onCheckpoint after each batch; importer shows
a Resume/Discard banner when an unfinished job is found on mount.
* docs(reports): wplace-autobot logic + wplace.live design research
Three review reports (backend, frontend, security/scale) and a
follow-up re-review after pull. Plan documents which findings were
addressed in this sweep and which were intentionally deferred.
tiennm99