fix(ci): seal 13th fix-forward — ruff-format 4 files + test_w803 verdict accept

CI on f13935f failed on:
1. ruff format check — cmd_dark_matter.py, cmd_duplicates.py, cmd_laws.py,
   test_w937_no_mojibake_em_dashes.py needed format normalization from W805
   Pattern-2 disclosure work in the 12th fix-forward.
2. test_w803::test_n1_empty_corpus_text_mode assertion drift — wave-1 A's
   W805 fix changed the empty-corpus verdict to "no symbols to analyze
   (corpus empty; ...)" but the test still asserted the legacy 3-token
   set. Extended the allowed-token tuple to accept the new verdict shape
   while keeping the legacy tokens for back-compat with any sibling
   detector that hasn't migrated.

Author: Cranot

src/roam/commands/cmd_dark_matter.py

@@ -308,9 +308,7 @@ def dark_matter(ctx, limit, min_npmi, min_cochanges, explain, category, persist)
             cochange_count: int
             if total == 0:
                 try:
-                    cochange_count = conn.execute(
-                        "SELECT COUNT(*) FROM git_cochange"
-                    ).fetchone()[0]
+                    cochange_count = conn.execute("SELECT COUNT(*) FROM git_cochange").fetchone()[0]
                 except sqlite3.OperationalError:
                     cochange_count = 0
             else:
@@ -367,9 +365,7 @@ def dark_matter(ctx, limit, min_npmi, min_cochanges, explain, category, persist)
             # Mirror that disclosure on the text branch so agents reading
             # the verdict line alone get the same lineage signal.
             try:
-                cochange_count = conn.execute(
-                    "SELECT COUNT(*) FROM git_cochange"
-                ).fetchone()[0]
+                cochange_count = conn.execute("SELECT COUNT(*) FROM git_cochange").fetchone()[0]
             except sqlite3.OperationalError:
                 # git_cochange table missing (older schema) — treat as
                 # no-cochange state per the loud-fallback rule.

src/roam/commands/cmd_duplicates.py

@@ -612,9 +612,9 @@ def duplicates(
             # indistinguishable from "scan ran cleanly across 1000 funcs
             # and found no clusters". Disclose the absent input state so
             # agents see that the detector ran in a degraded mode.
-            symbol_count = conn.execute(
-                "SELECT COUNT(*) FROM symbols WHERE kind IN ('function', 'method')"
-            ).fetchone()[0]
+            symbol_count = conn.execute("SELECT COUNT(*) FROM symbols WHERE kind IN ('function', 'method')").fetchone()[
+                0
+            ]
             if symbol_count == 0:
                 w805_state = "empty_corpus"
                 verdict = (

src/roam/commands/cmd_laws.py

@@ -302,8 +302,7 @@ def laws_mine(ctx, top, min_confidence, out_path, persist):
         symbol_count = _w805_symbol_count_laws
         if symbol_count == 0:
             verdict = (
-                "no symbols to analyze (corpus empty; "
-                "run `roam index --force` to populate the graph before law mining)"
+                "no symbols to analyze (corpus empty; run `roam index --force` to populate the graph before law mining)"
             )
             summary = {
                 "verdict": verdict,

tests/test_w803_n1_empty_corpus.py

@@ -144,6 +144,13 @@ def test_n1_empty_corpus_text_mode(cli_runner, empty_corpus):
     assert result.exit_code == 0
     assert "VERDICT:" in result.output
     out_lc = result.output.lower()
-    assert any(token in out_lc for token in ("no implicit n+1", "no n+1", "0 patterns")), (
-        f"text-mode VERDICT does not disclose empty state: {result.output!r}"
-    )
+    assert any(
+        token in out_lc
+        for token in (
+            "no implicit n+1",
+            "no n+1",
+            "0 patterns",
+            "no symbols to analyze",
+            "corpus empty",
+        )
+    ), f"text-mode VERDICT does not disclose empty state: {result.output!r}"

tests/test_w937_no_mojibake_em_dashes.py

@@ -49,6 +49,5 @@ def test_src_roam_has_no_cp1253_mojibake_em_dashes() -> None:
     assert hits == [], (
         "Found cp1253-mojibake em-dashes (the byte sequence "
         f"{_MOJIBAKE_EM_DASH!r} == 'β€”'). Replace with the correct UTF-8 "
-        "em-dash (— / b'\\xe2\\x80\\x94'). Hits:\n  "
-        + "\n  ".join(f"{p}: {n} occurrences" for p, n in hits)
+        "em-dash (— / b'\\xe2\\x80\\x94'). Hits:\n  " + "\n  ".join(f"{p}: {n} occurrences" for p, n in hits)
     )