The developers/aurelien sandbox scenes still reference legacy non-LOD
mesh paths (sm_book.mesh, sm_candlestick.mesh, ...) that don't exist
anymore — the production scenes were migrated to *_lod0/1/2.mesh.
Godot's full-project file scanner reads every .tscn at editor open
and emits 'Cannot open file' errors for each broken ext_resource,
even for scenes that the game never loads.
Mark developers/ as out-of-scope for Godot's filesystem walker with
a .gdignore at its root. The .import / .uid sidecars Godot had
generated for files inside (CheckLightmap.exr.import,
CheckLightmap.gd.uid) are auto-removed by the editor since they are
now orphaned metadata — only the source files (.tscn, .gd, .exr,
.lmbake) remain. Re-enabling the sandbox later just means deleting
the .gdignore; Godot will regenerate the sidecars.
The other diffs in this commit are Godot 4 canonicalising whatever
.tscn / .tres files were touched in the editor session that ran the
LightmapGI bake attempt: ext_resource uid= attributes added, format
bumped 2 -> 3, property order normalised. No behavioural change.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Vaillant Jeremy
stilobique-surface