d294b3923c
The Linux §6 on-glass matrix can validate the gamescope must-REJECT behavior only on native-gamescope hardware (the NVIDIA dev box fails headless GBM allocation — a nested Hyprland/sway/gamescope output comes up 0×0), so pin the gate down deterministically instead: extract the inline `live_reconfig_ok` decision into a pure `reconfig_allowed(compositor, per_client_mode)` and test it — gamescope rejects in every identity mode, a per-client-mode policy rejects on every backend, and all other compositors (plus the synthetic protocol-test source) with the default identity accept. Also fmt-normalizes the re_add block from the prior commit (whitespace only). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>