feat: enhance compatibility table with file name handling and UI updates

ams/compat.py

@@ -17,6 +17,7 @@ from __future__ import annotations
 
 import hashlib
 import json
+import re
 from collections import Counter
 from dataclasses import dataclass
 from datetime import datetime, timezone
@@ -77,8 +78,19 @@ def _vs_reference(reference: Snapshot, variant: Snapshot) -> dict[str, Any]:
 
 
 # --- table builder -----------------------------------------------------------------------------
+# Stored binaries are prefixed with the first 8 hex of their sha256 to keep filenames unique on
+# disk (e.g. ``333ab0c4_PIKLIB8.dll``). That prefix is per-file, so it must be stripped before
+# grouping — otherwise every copy of PIKLIB8.dll lands in its own row and nothing ever clusters.
+_HASH_PREFIX = re.compile(r"^[0-9a-fA-F]{8}_")
+
+
+def library_name(raw: str) -> str:
+    """The display/grouping name: the stored binary name with any ``<sha8>_`` prefix removed."""
+    return _HASH_PREFIX.sub("", raw)
+
+
 def _library_name(snap: Snapshot) -> str:
-    return snap.binary.get("name") or "?"
+    return library_name(snap.binary.get("name") or "?")
 
 
 def _variant_id(index: int) -> str:
@@ -115,6 +127,7 @@ def _build_library(name: str, entries: list[Entry]) -> dict[str, Any]:
         members = [
             {
                 "game": e.game,
+                "file": e.snapshot.binary.get("name"),  # stored name, incl. the <sha8>_ prefix
                 "engine": e.snapshot.binary.get("engine"),
                 "compiler": e.snapshot.binary.get("compiler"),
                 "sha256": e.snapshot.binary.get("sha256"),