- Removed all SubResource BoxShape3D references from test_level.tscn
- Changed PackedStringArray feature from 4.6 to 4.2
Scene is now pure nodes + transforms, no external resource IDs
- scenes/test_level/test_level.tscn — playable test environment (30x30 floor + 4 walls + ramp)
Floor at y=-1, Player spawn at (0, 1.5, 8), FpsCamera at head height (y=1.7)
DirectionalLight + WorldEnvironment + UI label overlay (speed/state/chain)
- debug/debug_test_env.sh — launch wrapper for manual playtesting
No code changes: raw physics testbed. Intended to be opened as first scene in Godot window.
Closes#2 (test-level scene task)