diff --git a/crates/oa-core/src/language/analysis_source/mixed/project/tests/index_tests.rs b/crates/oa-core/src/language/analysis_source/mixed/project/tests/index_tests.rs
index f6b0a372..7c9b3cb7 100644
--- a/crates/oa-core/src/language/analysis_source/mixed/project/tests/index_tests.rs
+++ b/crates/oa-core/src/language/analysis_source/mixed/project/tests/index_tests.rs
@@ -48,7 +48,11 @@ fn entire_authored_index_oa_sa_original_and_unicode_crlf() {
             assert_eq!(indexed.project(), &rich_model(layer));
             assert_eq!(indexed.warnings(), warnings);
             assert!(std::ptr::eq(indexed.bundle(), &bundle));
-            assert_eq!(indexed.resolved.syntax.budget.usage, usage);
+            // Root plus Left/Argument(1)/Argument(1) is four structural frames.
+            // Index verification may raise this peak without reparsing input.
+            let mut expected_usage = usage;
+            expected_usage.deepest_frame = expected_usage.deepest_frame.max(4);
+            assert_eq!(indexed.resolved.syntax.budget.usage, expected_usage);
             assert_eq!(indexed.resolved.syntax.budget.numeric_units(), numeric);
             assert_eq!(indexed.resolved.static_limits, static_limits);
             assert_eq!(indexed.resolved.static_usage, static_usage);
diff --git a/harness/analysis-mixed-index-implementation-20260924.md b/harness/analysis-mixed-index-implementation-20260924.md
index d069d4cc..99acc928 100644
--- a/harness/analysis-mixed-index-implementation-20260924.md
+++ b/harness/analysis-mixed-index-implementation-20260924.md
@@ -7,7 +7,14 @@ The first Windows strict core all-target Clippy attempt at `a18b7966` returned
 101 for the test's `6 | 7 | 8` pattern (`manual_range_patterns`); all 545 source
 inputs remained unchanged. Its receipt/log are preserved. The successor uses
 `6..=8` with the same cases and no production change. No test body ran in that
-attempt; corrected strict and runtime gates are still required.
+attempt. At `1d02206c`, strict lint passes and the actual listing has 216 names.
+The seven new tests initially yield six passed and one failed: the full fixture
+incorrectly required the old lexical frame peak (three) to remain unchanged.
+The contract explicitly permits structural depth checks to raise that peak;
+root plus Left/Argument(1)/Argument(1) has four frames. Independent review
+confirmed this test defect. The successor expects that exact maximum while
+still comparing every other usage field, numeric work and static metadata.
+Both original failures remain recorded; current-source runtime gates are pending.
 The accepted contract/review are published at
 `7cfdd13d3a1472e63fd34b0080b2cfc4b921b23e:harness/analysis-mixed-index-contract-20260924.md`.
 Independent exhaustive fixture data and its raw-byte checker are at