fix: the joined delete rule keeps the over-500-character fallback (GST-942 scoped fix-check)

A split recursive delete padded past 500 characters planned light; the
joined rule now has the [^)]{501} fallback the line rules have. The
changelog and review policy say a one-line edit to an existing split
call is still read on its own.

Repin lib/review-risk.ts under no-loss replay GST-942 (no tier change
over 100 main commits).

Co-authored-by: capy-ai[bot] <230910855+capy-ai[bot]@users.noreply.github.com>

test/review-packets-removed.test.ts

@@ -84,7 +84,7 @@ const REVIEWER_BRIEFS: Record<string, { sha: string; replay: Replay }> = {
     'review/specialists/targeted.md': { sha: '7f92a0d0a8319c3c0e076fb3b1a4689c45120b2be2c14dfc7d4cb03aafa9d6a5', replay: 'GST-257' },
     'scripts/resolvers/fix-check.ts': { sha: '712bf5b0c439e96bac32f19cbe25394dabb4c94aa66600100bfde9b100e15a08', replay: '#3638' },
     'lib/review-depth.ts': { sha: '166dd7b1148a272b345dd9d2ceccd14348cc59c52ef9c88109436f6f61cf6b69', replay: 'GST-911-redos' },
-    'lib/review-risk.ts': { sha: 'd8845fdb7b4cffe73d400b367c1fdf7df03ca155f2e579ed5c9833d4e9d09094', replay: 'GST-942' },
+    'lib/review-risk.ts': { sha: '08464b78a723ee463ca3a28d0abbc4eb8f4f512192061c703743707b66b5a311', replay: 'GST-942' },
 };
 
 describe('reviewer briefs stay at their no-loss-tested bytes (GSTA-167)', () => {

test/review-risk-redos.test.ts

@@ -87,6 +87,7 @@ describe('the rm rule matches what R51 matched', () => {
     const split = (lines: string[]) => matchRisk({ codePaths: ['src/clean.ts'], added: { 'src/clean.ts': lines }, removed: {}, scopeAuth: false }).has('security');
     expect(split(['  fs.rmSync(path.join(root, "build-output-cache"), {', '    recursive: true,', '    force: true,', '  });'])).toBe(true);
     expect(split(['  await fs.promises.rm(', '    path.join(root, "cache"),', '    { recursive: true },', '  );'])).toBe(true);
+    expect(split(['  fs.rmSync(', '    dir,', '    /*' + 'x'.repeat(510) + '*/', '    { recursive: true },', '  );'])).toBe(true);
     expect(split(['  fs.rmSync(path.join(root, "file"), {', '    force: true,', '  });'])).toBe(false);
   });
 });