Implement playable Mac client and rendering validation

script/playable_gate_test.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+# INF-02 negative/positive checks. Uses only static fixtures and a temporary
+# output directory; it never starts the game or contacts the server.
+set -euo pipefail
+cd "$(dirname "$0")/.."
+tmp_dir="$(mktemp -d "${TMPDIR:-/tmp}/mt-playable-gate.XXXXXX")"
+trap 'rm -R "$tmp_dir"' EXIT
+
+node script/validate_playable_report.mjs \
+  --report test/playable/report.valid.json \
+  --output "$tmp_dir/valid.json" \
+  --log test/playable/clean.log --process-code 0 --require-pass
+
+if node script/validate_playable_report.mjs \
+  --report test/playable/report.blocked.json \
+  --output "$tmp_dir/blocked.json" \
+  --log test/playable/clean.log --process-code 0 --require-pass; then
+  echo "FAIL: BLOCKED fixture was accepted" >&2
+  exit 1
+fi
+
+if node script/validate_playable_report.mjs \
+  --report test/playable/report.valid.json \
+  --output "$tmp_dir/exit.json" \
+  --log test/playable/clean.log --process-code 1 --require-pass; then
+  echo "FAIL: non-zero child exit was accepted" >&2
+  exit 1
+fi
+
+if node script/validate_playable_report.mjs \
+  --report test/playable/report.valid.json \
+  --output "$tmp_dir/rid.json" \
+  --log test/playable/rid-warning.log --process-code 0 --require-pass; then
+  echo "FAIL: renderer warning was accepted" >&2
+  exit 1
+fi
+
+if MT_PLAYABLE_VALIDATE_CONFIG="$PWD/test/playable/scenario.example.json" \
+  godot --headless --path project --script playable_config_gate.gd; then
+  echo "FAIL: empty scenario configuration was accepted" >&2
+  exit 1
+fi
+
+echo "playable_gate_test: PASS"