fix: allow blob: urls in worldLoader to enable local file dropping

fix: prevent local dropped models from being overwritten on refresh

feat: improve mobile touch controls and add local file drop support

fix: missing useThree and THREE imports for CameraLogger

fix: syntax error escaped backticks again in worldLoader

fix: syntax error in WorldViewer.tsx

feat: add developer P key logger and remove PlacementEditor

fix: remove escaped backticks causing syntax error

fix: use dynamic displayName for external URLs

fix: ignore _temp_chunks directory when reading models

style: hide background canvas during upload and use solid black overlay

style: translate comment to english

perf: use dynamic chunk size for large files

perf: increase upload concurrency to 6

feat: implement concurrent chunked upload and JYSM prefix URL routing

refactor: extract UploadOverlay into separate component

fix: vertical centering of upload UI when world is empty

feat: implement real upload progress bar with XMLHttpRequest

feat: add uploading progress overlay during drag-and-drop

chore: upgrade @sparkjsdev/spark to 2.1.0

fix: import useState in FlyController

feat: enable mobile touch joystick in fly mode

feat: default to fps mode on mobile to enable virtual joystick

fix: update github link and remove obsolete terminal button

fix: disable native touch and pull-to-refresh on mobile

fix: update operation hints to accurately reflect controls

fix: restore accidentally deleted icon in BottomLeftControls

style: remove emoji from operation hint

feat: move operation hints to persistent bottom left controls

feat: fix white flash on load and add operation hints to loading screen

fix: revert proxy and use nocache to bypass worker CORS cache bug

fix: restore content-length header in proxy to prevent webgl parse failure

fix: proxy external models to bypass worker CORS and HF redirects

fix: change url param to model to avoid vite intercept

fix: allow all hosts in vite dev server

ci: add Hugging Face YAML frontmatter to README

Initial commit: SparkSplat with proper UTF-8 LFS