fix(editor): store scans locally without host uploads

[anisayakmitra-in]

Summary

Fixes the self-hosted scan upload path, which currently accepts a file and then silently does nothing when a host upload callback is absent.

Details

• Stores local GLB and glTF uploads through the existing IndexedDB asset storage.
• Creates and selects the corresponding ScanNode on the active level.
• Retains the existing host upload flow when a callback is supplied.
• Adds coverage for local scan asset creation.

Fixes #645

Validation

• bun test packages/editor/src/lib/local-guide-image.test.ts
• bun run --filter @pascal-app/editor check-types
• bun run --filter @pascal-app/editor test (760 pass)
• biome check on the changed implementation files

---

Note

Low Risk
Scoped editor upload branching and local asset creation; host upload path is preserved when a callback is supplied.

Overview
Fixes scan uploads doing nothing in setups that do not provide a host onUploadAsset callback (e.g. self-hosted editor). GLB/glTF files now follow the same local path as guide images: persist via saveAsset (IndexedDB), create a ScanNode on the level, select it, and drive the existing upload UI through success/error states.

Adds createLocalScan (plus shared filename helpers) in local-guide-image.ts, with a unit test. When a host callback is present, behavior is unchanged except the scan handoff calls onUploadAsset directly after the project-id guard.

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Uploaded scan can stay hidden

Low Severity

The new local scan success path selects the created ScanNode but never calls setShowScans(true). The guide-image path in the same handler does call setShowGuides(true). If showScans is off (a persisted per-project preference), the scan appears in the tree while ScanRenderer keeps the mesh unmounted, so the upload can look like it failed.

 

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