Polish settings, add matching defaults, drop pkg2zip, externalize infra config

- Rework Settings tab into grouped sections
- Add preferred-region matching and full-hash-by-default setting
- Replace combo-box square arrow with a proper chevron
- Fix UMD Refresh button (clicked bool was clearing the view)
- Remove pkg2zip.exe fallback (pure-Python decryptor is the primary path)
- Move LAN IP/share paths to .env; use example defaults in config

app/matcher.py

@@ -111,6 +111,36 @@ def normalize_name(name):
     return _normalize(name)
 
 
+_EUROPEAN_REGIONS = {
+    "europe", "germany", "france", "spain", "italy", "russia", "netherlands",
+    "portugal", "poland", "united kingdom", "greece", "norway", "sweden",
+    "denmark", "finland", "austria", "belgium", "switzerland",
+}
+
+
+def region_matches(region, prefer):
+    """True if ``region`` satisfies the user's preferred-region hint."""
+    if not prefer or not region:
+        return False
+    tokens = {t.strip().lower() for t in str(region).split(",") if t.strip()}
+    if not tokens:
+        return False
+    prefer = prefer.strip().lower()
+    if prefer in tokens:
+        return True
+    if prefer == "europe":
+        return bool(tokens & _EUROPEAN_REGIONS)
+    return False
+
+
+def apply_region_preference(candidates, prefer):
+    """Narrow ``candidates`` to the preferred region (fall back to all)."""
+    if not prefer:
+        return candidates
+    filtered = [c for c in candidates if region_matches(c.get("region"), prefer)]
+    return filtered or candidates
+
+
 def serial_candidates(conn, record):
     """Return all catalog releases matching the disc's serial (size-narrowed)."""
     serial = record.get("serial")
@@ -131,7 +161,7 @@ def serial_candidates(conn, record):
     return _narrow(conn, [dict(r) for r in rows], record.get("size"))
 
 
-def match(conn, record):
+def match(conn, record, prefer_region=None):
     size = record.get("size")
 
     # 1. Hash is the most precise key; serials are shared across revisions.
@@ -171,6 +201,10 @@ def match(conn, record):
                 for cand in candidates:
                     if cand["id"] == saved["release_id"]:
                         return "choice", cand
+            if prefer_region:
+                filtered = [c for c in candidates if region_matches(c.get("region"), prefer_region)]
+                if len(filtered) == 1:
+                    return "region", filtered[0]
             return "unknown", None
 
     # 4. Fuzzy fallback (filename + PARAM.SFO title), size-disambiguated.