feat: add the PlayStation reference frames

Bust-A-Move 2 (USA) on Beetle PSX, Beetle PSX HW, SwanStation, PCSX-ReARMed and PCSX1, each frame reviewed on its PNG. A boot needs a screen of the game: the BIOS screens alone are not one.

scripts/core_probe.py

@@ -1197,8 +1197,8 @@ def judge(rep: dict, oracle: dict) -> tuple[str, dict]:
     """The verdict of one repetition and the evidence that decided it.
 
     In order: a worker killed after the timeout is a hang and one that died
-    a crash, from the process status. A reference frame reached is a boot.
-    Without one, an error pattern of the core log or a known error screen
+    a crash, from the process status. A reference frame of the game reached
+    is a boot: the console's own screens alone are not. Without one, an error pattern of the core log or a known error screen
     is a BIOS error. Every sampled frame of the second half one colour is a
     hang. Anything else is unknown: a run is never called a boot because
     its frames differ from another run's.
@@ -1217,12 +1217,23 @@ def judge(rep: dict, oracle: dict) -> tuple[str, dict]:
         frames.append((int(rep.get("frames", 0)) + int(rep.get("warmup", 0)), final))
     references = {r["sha1"]: r for r in oracle.get("references") or ()}
     reached = [(frame, digest) for frame, digest in frames if digest in references]
-    if reached:
-        frame, digest = reached[0]
-        stages = list(dict.fromkeys(references[d]["stage"] for _, d in reached))
+    stages = list(dict.fromkeys(references[d]["stage"] for _, d in reached))
+    game = [(frame, digest) for frame, digest in reached if references[digest]["stage"] == "game"]
+    if game:
+        frame, digest = game[0]
         return BOOTS, {"rule": "reference_frame",
                        "detail": f"frame {frame} shows {references[digest]['shows']}",
                        "frame": frame, "sha1": digest, "stages": stages}
+    verdict, evidence = _without_the_game(rep, oracle, frames)
+    if stages:
+        # The console's own screens without one of the game: never a boot.
+        evidence["stages"] = stages
+        evidence["detail"] += ", after the BIOS screens and no screen of the game"
+    return verdict, evidence
+
+
+def _without_the_game(rep: dict, oracle: dict, frames: list[tuple[int, str]]) -> tuple[str, dict]:
+    """The verdict of a run that reached no screen of the game."""
     for pattern in oracle.get("error_patterns") or ():
         for line in rep.get("logs") or ():
             if re.search(pattern, line["text"]):