Merge origin/main (v1.91.7.0) into test-audit-reduction

Keep both intents: v1.91.7.0's functional QA, docsync and exploratory
paid cases and their free owners stay; this branch's deletions stay
deleted. main's new paid keys follow the derived-closure touchfile rule
(free *.test.ts paths dropped, static helper/fixture closure added), its
new helper-only tests join the ratchet baseline, and its free selection
examples that named free test files now assert the derived selection.

Periodic CI keeps seven slices without the retired Autoplan slice; the
gate census keeps seven single-worker slices with --skip-judges. Wall
and census literals are recomputed from the merged planner, durations
are re-recorded on Ubicloud, and VERSION stays 1.91.8.0 above 1.91.7.0.

test/ceo-mode-preference-al.test.ts

@@ -120,7 +120,8 @@ test('only an explicit user selection or enabled successful mode check bypasses
   expect(s).toContain('For >15 planned changed files, recommend SCOPE REDUCTION');
   expect(document).toContain('more than 8 files or more than 2 new classes/services');
   expect(s.replace(/\s+/g,' ')).toContain('ask about each proposed addition or cut, including those prompted by file-count thresholds');
-  expect(s).toContain('Count distinct planned file additions, edits and deletions, labeling estimates');
+  expect(s.replace(/\s+/g,' ')).toContain('Count distinct planned file additions, edits and deletions');
+  expect(s.replace(/\s+/g,' ')).toContain('mark estimated counts as estimates');
   expect(s).toContain('These modes differ in kind, not coverage; do NOT score completeness');
   expect(document).toContain('Note: options differ in kind, not coverage — no completeness score.');
  }