forge: selftest_sweep report() Counter census refactor — single-scan verdict census replacing two full scans, 39/39 selftest cells + 21-tool live sweep pass

tools/selftest_sweep.py

@@ -148,6 +148,7 @@ import re
 import subprocess
 import sys
 import tempfile
+from collections import Counter
 
 # The default target is the checkout this file lives in -- the same path in
 # place, a different path in a copy. An absolute literal here would make a bare
@@ -500,7 +501,7 @@ def sweep(rows, repo: str, timeout: int, verbose: bool):
 # --------------------------------------------------------------------- report
 
 def report(results, source, untracked, quiet=False):
-    fatal = [r for r in results if r["verdict"] in FATAL]
+    counts = Counter(r["verdict"] for r in results)          # one census pass (was: fatal list-comp + ok sum = two full scans of results)
     if not quiet:
         print(f"discovery: {source}")
         for name in untracked:
@@ -517,10 +518,11 @@ def report(results, source, untracked, quiet=False):
             print(f"{r['tool']:<{width}}  {r['verdict']:<16} {claim_s:>12} "
                   f"{printed_s:>12}  {r['detail']}")
         print()
-    ok = sum(1 for r in results if r["verdict"] == "OK")
-    print(f"sweep: {len(results)} tools, {ok} OK, {len(fatal)} fatal"
-          + (f" ({', '.join(sorted({r['verdict'] for r in fatal}))})" if fatal else ""))
-    return 1 if fatal else 0, ok, len(fatal)
+    n_fatal = sum(counts[v] for v in FATAL)
+    fatal_verdicts = sorted(v for v in counts if v in FATAL)
+    print(f"sweep: {len(results)} tools, {counts['OK']} OK, {n_fatal} fatal"
+          + (f" ({', '.join(fatal_verdicts)})" if n_fatal else ""))
+    return 1 if n_fatal else 0, counts["OK"], n_fatal
 
 
 # --------------------------------------------------------------- count pin