fix(test): update the three remaining KNOBS_HASH_VERSION pins to 14 (#3430)

Missed in the first pass because I ran a targeted set of test files instead of
the full suite. CI shards 3, 8 and 10 caught them:

  test/search/knobs-hash-reranker.test.ts:67
  test/cross-modal-phase1.test.ts:139,149
  test/search-alias-resolved-boost.test.ts:93

Each carries the running history of why the version moved, so each gets the
13→14 rationale appended rather than just the number swapped. No pins at 13
remain anywhere in test/.

test/cross-modal-phase1.test.ts

@@ -136,7 +136,7 @@ describe('D2 — knobsHash differs across cross-modal knob values', () => {
     return resolveSearchMode({ mode: 'balanced' });
   }
 
-  test('KNOBS_HASH_VERSION is 13 (cross-modal still appended; 12→13 embedding-provider migration #3390)', () => {
+  test('KNOBS_HASH_VERSION is 14 (cross-modal still appended; 13→14 compiled_truth boost scope #3430)', () => {
     // v0.35 ladder: 1→2 reranker, 2→3 floor_ratio. v0.36 piggybacks on v=3
     // with 7 cross-modal knobs + column/provider context. v0.40.4 (salem) +
     // v0.39 T21 (master) bump to v=4 for graph_signals + schema-pack fields.
@@ -146,7 +146,8 @@ describe('D2 — knobsHash differs across cross-modal knob values', () => {
     // v0.43: 9→10 relational recall arm. #1400: 10→11 query-side input_type
     // finally reaches asymmetric providers — pre-fix rows were keyed on
     // document-side query vectors. #2825: 11→12 hard-exclude fold (hx=).
-    expect(KNOBS_HASH_VERSION).toBe(13);
+    // #3430: 13→14 compiled_truth boost no longer applies at detail=medium.
+    expect(KNOBS_HASH_VERSION).toBe(14);
   });
 
   test('flipping unified_multimodal changes the hash', () => {

test/search-alias-resolved-boost.test.ts

@@ -89,7 +89,7 @@ describe('alias_resolved boost stage', () => {
 });
 
 describe('KNOBS_HASH_VERSION', () => {
-  it('is 13 (12→13 embedding-provider migration invalidates rows written against the prior embedding space, #3390)', () => {
-    expect(KNOBS_HASH_VERSION).toBe(13);
+  it('is 14 (13→14 compiled_truth boost no longer applies at detail=medium, so pre-fix rankings must be unreachable, #3430)', () => {
+    expect(KNOBS_HASH_VERSION).toBe(14);
   });
 });

test/search/knobs-hash-reranker.test.ts

@@ -64,7 +64,10 @@ describe('KNOBS_HASH_VERSION + version invariants', () => {
     // pre-fix document-side query vectors must not be served.
     // #2825: 11→12 to fold the resolved hard-exclude prefix list (hx=) —
     // cached rows leaked GBRAIN_SEARCH_EXCLUDE'd slugs across processes.
-    expect(KNOBS_HASH_VERSION).toBe(13);
+    // #3430: 13→14 — the compiled_truth boost no longer applies at
+    // detail=medium. Results are cached after fusion, so rows ranked under
+    // the old boost semantics must not be served under the new ones.
+    expect(KNOBS_HASH_VERSION).toBe(14);
   });
 
   test('hash is 16 hex chars regardless of reranker config', () => {