fix(extract): recognize an adverb in 'governed exclusively/solely by …'

A manner adverb ("exclusively", "solely", "only", "entirely") routinely
sits between "governed" and "by", and the rigid `governed\s+by` token
dropped the entire clause — so CHOICE-001 reported "no governing-law
clause" on a document whose Governing Law section plainly names one. Both
the "laws of X" (GOV_LAW) and adjectival "X law" (GOV_LAW_ADJECTIVAL)
patterns now accept the optional adverb via a shared GOVERNED_BY
fragment. The adverb does not change the clause's meaning, so this only
widens matches; no corpus/fixture uses the form, so goldens are
unchanged. Adds 4 tests.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: clay-good

src/extract/govlaw-phrasing.test.ts

@@ -12,6 +12,11 @@ const REGISTERS: Array<[clause: string, want: RegExp]> = [
   ["This Agreement is governed by the internal substantive laws of Texas.", /Texas/],
   ["The internal laws of the State of Delaware shall govern this Agreement.", /Delaware/],
   ["The substantive laws of Nevada shall apply to this Agreement.", /Nevada/],
+  // A manner adverb between "governed" and "by" must not drop the clause.
+  ["This Agreement shall be governed exclusively by the laws of California.", /California/],
+  ["This Agreement shall be governed solely by the laws of the State of Delaware.", /Delaware/],
+  ["This Agreement is governed only by the laws of New York.", /New York/],
+  ["This Agreement shall be governed entirely by Texas law.", /Texas/],
 ];
 
 // Decoys: an adjective before "laws" must not turn a non-choice-of-law phrase

src/extract/jurisdictions.ts

@@ -55,8 +55,14 @@ const JURISDICTION_AFTER_LOCALITY = new RegExp(
  * "Ireland" venue.
  */
 const SOVEREIGN_PREFIX = String.raw`the\s+(?:State|Commonwealth|Republic|Kingdom|Province)\s+of\s+|the\s+`;
+// A manner adverb routinely sits between "governed" and "by" — "governed
+// exclusively by", "governed solely by" — and the rigid "governed\s+by" token
+// dropped the whole clause, so CHOICE-001 reported "no governing-law clause" on
+// a document that plainly names one. The adverb is optional and does not change
+// the clause's meaning, so this only widens what matches.
+const GOVERNED_BY = String.raw`governed\s+(?:(?:exclusively|solely|only|entirely)\s+)?by`;
 const GOV_LAW = new RegExp(
-  String.raw`\b((?:governed\s+by|(?:interpreted|construed|resolved)\s+(?:under|in\s+accordance\s+with)|subject\s+to|determined\s+(?:under|by|in\s+accordance\s+with))\s*,?\s*(?:and\s+construed\s+(?:in\s+accordance\s+with\s*,?\s*)?)?the\s+(?:substantive\s+|internal\s+|domestic\s+|local\s+|applicable\s+)*laws?\s+of\s+(?:${SOVEREIGN_PREFIX})?([A-Z][A-Za-z\s&-]+?))(?=[.,;)]|\s+(?:without|excluding|and|regardless)|$)`,
+  String.raw`\b((?:${GOVERNED_BY}|(?:interpreted|construed|resolved)\s+(?:under|in\s+accordance\s+with)|subject\s+to|determined\s+(?:under|by|in\s+accordance\s+with))\s*,?\s*(?:and\s+construed\s+(?:in\s+accordance\s+with\s*,?\s*)?)?the\s+(?:substantive\s+|internal\s+|domestic\s+|local\s+|applicable\s+)*laws?\s+of\s+(?:${SOVEREIGN_PREFIX})?([A-Z][A-Za-z\s&-]+?))(?=[.,;)]|\s+(?:without|excluding|and|regardless)|$)`,
   "gi",
 );
 
@@ -82,7 +88,7 @@ const GOV_LAW_IS = new RegExp(
  * "federal law", "such law").
  */
 const GOV_LAW_ADJECTIVAL = new RegExp(
-  String.raw`\b(?:governed\s+by|(?:construed|interpreted)\s+(?:under|in\s+accordance\s+with))\s+(?:${SOVEREIGN_PREFIX})?([A-Z][A-Za-z&-]+(?:\s+[A-Z][A-Za-z&-]+){0,2})\s+law\b`,
+  String.raw`\b(?:${GOVERNED_BY}|(?:construed|interpreted)\s+(?:under|in\s+accordance\s+with))\s+(?:${SOVEREIGN_PREFIX})?([A-Z][A-Za-z&-]+(?:\s+[A-Z][A-Za-z&-]+){0,2})\s+law\b`,
   "gi",
 );
 // The subject-first adjectival form: "Georgia law governs this Agreement",