sorter: outer file name wins over inner archive names in fuzzy match

Best-pool scoring used to always blend the archive's inner file names
into the fuzzy score (0.95 discount), which dragged clean-named files
into wrong units (e.g. 'Keeper of Secrets & Shalaxi Helbane.7z' ended
in Orks/Boyz). Now the outer name decides when it scores >= threshold;
inner names only vote as fallback (hash-named gofile archives rely on
that). Also: url/failed-list run artifacts are excluded from sorting,
and two plan-inspection helpers under tools/.

tools/plan_diff.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+"""Diff old vs new sorter plans by source path -> target."""
+import json
+import sys
+
+changed = 0
+same = 0
+examples = []
+for n in (1, 2, 3):
+    old = {p["source"]: p for p in json.load(open(f"/tmp/plan{n}.json"))}
+    new = {p["source"]: p for p in json.load(open(f"/tmp/plan{n}b.json"))}
+    for src, np in new.items():
+        op = old.get(src)
+        if not op:
+            continue
+        if op["target"] != np["target"] or op["kind"] != np["kind"]:
+            changed += 1
+            if len(examples) < 40:
+                examples.append((n, op, np))
+        else:
+            same += 1
+print(f"same: {same}  changed: {changed}")
+for n, op, np in examples:
+    print(f"\n[{n}] {op['name']}  (score {op['score']} -> {np['score']})")
+    print(f"  old: {op['target']}")
+    print(f"  new: {np['target']}")