fix(scanners): retire the autoMode GAP dimension, a /doctor duplicate (D1)

CC 2.1.226's /doctor Check 8 covers auto mode with usage-weighted judgement.
The binding positioning forbids carrying a feature whose whole value is
duplicating a /doctor check, so the "adopt this feature" nudge goes. The
deterministic side stays: SET still validates autoMode structure and still
flags it as dead config in shared project settings. GAP dimensions 25 -> 24.

The title lived in FOUR tables, not the two the removal was scoped against:
the dimension list, scoring TITLE_TO_ID, the humanizer's static translations,
and the scoring denominators (TIER_COUNTS t3 8->7, TOTAL_DIMENSIONS 25->24,
MAX_WEIGHTED 42->41) -- the one that moves a user-visible number. findGapId
falls back to 'unknown' silently, so a partial removal would have degraded
without failing. A blanket sync invariant now asserts all four against
GAP_CHECKS instead of comparing occurrences pairwise; each arm was verified
red against its own defect (denominator drift, orphaned humanizer entry,
resurrected dimension).

Frozen tests/snapshots/v5.0.0/ stays untouched. strip-retired-gap.mjs is the
removal twin of strip-added-scanner.mjs: it strips the retired dimension from
whichever side still carries it and re-derives GAP IDs, since retiring a
dimension from mid-list shifts every later ID by one. Derived utilization
figures are dropped from comparison rather than recomputed -- recomputing them
in a test helper would assert the new arithmetic against itself, and
scoring.test.mjs already pins them exactly. Re-seeding was rejected: it would
silently bake in any other drift across every scanner those four files cover.

risk_score, risk_band, verdict, overallGrade, maturity and segment are
byte-identical across the change (severity info carries zero risk weight; GAP
is excluded from the overall grade). Utilization shifts 43 -> 44 on the fixture.

D2 (CA-SKL-002) is NOT removed. Verified against the primary source first: the
CC changelog carries exactly one budget-fraction statement (L3786, 2.1.32) and
nothing supersedes it, so our 2% is current and 002 is not a duplicate with a
stale figure. /doctor's ~1% could not be reconciled from the changelog and it
discloses its own numbers as disk estimates, so it is recorded, not adopted.
Left explicitly unverified in a code note: L3786 says "character budget" while
we express tokens -- a 4x difference nobody can settle from the wording.

Suite 1531 -> 1535, all green.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RsfPGxgwbR3MY54wDC6hat

tests/lib/scoring.test.mjs

@@ -92,7 +92,7 @@ describe('calculateUtilization', () => {
     assert.equal(result.overhang, 0);
   });
 
-  it('returns 0% when all 25 dimensions are gaps', () => {
+  it('returns 0% when all 24 dimensions are gaps', () => {
     const result = calculateUtilization(allGapFindings());
     assert.equal(result.score, 0);
     assert.equal(result.overhang, 100);
@@ -101,24 +101,24 @@ describe('calculateUtilization', () => {
   it('weighs T1 gaps heavier (3x)', () => {
     const onlyT1 = t1GapFindings(); // 5 T1 gaps = 15 weight lost
     const result = calculateUtilization(onlyT1);
-    // Lost: 5 × 3 = 15 out of 42. Present: 27/42 = 64%
-    assert.equal(result.score, 64);
+    // Lost: 5 × 3 = 15 out of 41. Present: 26/41 = 63%
+    assert.equal(result.score, 63);
   });
 
   it('weighs T4 gaps lighter (1x)', () => {
     const onlyT4 = t4GapFindings(); // 5 T4 gaps = 5 weight lost
     const result = calculateUtilization(onlyT4);
-    // Lost: 5 × 1 = 5 out of 42. Present: 37/42 = 88%
+    // Lost: 5 × 1 = 5 out of 41. Present: 36/41 = 88%
     assert.equal(result.score, 88);
   });
 
-  it('T1+T2 present but no T3+T4 scores ~69%', () => {
-    // T3: 8 dims × 1 = 8, T4: 5 dims × 1 = 5. Lost = 13 out of 42. Present = 29/42 = 69%
+  it('T1+T2 present but no T3+T4 scores ~71%', () => {
+    // T3: 7 dims × 1 = 7, T4: 5 dims × 1 = 5. Lost = 12 out of 41. Present = 29/41 = 71%
     const t3t4Gaps = Object.entries(TITLE_TO_ID)
       .filter(([, id]) => id.startsWith('t3') || id.startsWith('t4'))
       .map(([title, id]) => makeGapFinding(title, id.split('_')[0]));
     const result = calculateUtilization(t3t4Gaps);
-    assert.equal(result.score, 69);
+    assert.equal(result.score, 71);
   });
 
   it('score + overhang = 100', () => {
@@ -581,17 +581,17 @@ describe('generateHealthScorecard', () => {
 // Constants and exports
 // ========================================
 describe('scoring constants', () => {
-  it('TITLE_TO_ID has 25 entries', () => {
-    assert.equal(Object.keys(TITLE_TO_ID).length, 25);
+  it('TITLE_TO_ID has 24 entries', () => {
+    assert.equal(Object.keys(TITLE_TO_ID).length, 24);
   });
 
-  it('TIER_COUNTS sum to 25', () => {
+  it('TIER_COUNTS sum to 24', () => {
     const sum = Object.values(TIER_COUNTS).reduce((a, b) => a + b, 0);
-    assert.equal(sum, 25);
+    assert.equal(sum, 24);
   });
 
-  it('MAX_WEIGHTED is 42', () => {
-    assert.equal(MAX_WEIGHTED, 42);
+  it('MAX_WEIGHTED is 41', () => {
+    assert.equal(MAX_WEIGHTED, 41);
   });
 
   it('TIER_WEIGHTS match spec', () => {