fix(ci): repair lanes broken by retrieval disclosure commit

crates/tracedecay-code-index/src/production/generation_statistics.rs

@@ -17,7 +17,7 @@ pub struct CodeIndexGenerationStatisticsV1 {
     pub edge_count: u64,
     /// References the generic name resolver dropped for multiple matching definitions.
     /// Excludes module-specific resolution. `None` means the count was not measured.
-    #[serde(default)]
+    #[serde(default, skip_serializing_if = "Option::is_none")]
     pub ambiguous_name_drops: Option<u64>,
 }
 

crates/tracedecay-code-index/src/production/sealed_codec.rs

@@ -55,7 +55,7 @@ use super::*;
 /// from source rather than migrated. Revisions through eight also predate
 /// required clone-body source rows, so the rebuild keeps them from reading as
 /// successful empty clone evidence.
-pub const SEALED_GENERATION_FORMAT_REVISION_V1: u32 = 20;
+pub const SEALED_GENERATION_FORMAT_REVISION_V1: u32 = 21;
 
 /// The typed refusal for a sealed generation this build no longer reads.
 pub fn superseded_sealed_generation_revision(revision: u32) -> CodeIndexProductionErrorV1 {

crates/tracedecay-code-index/tests/code_index_suite/production_orchestration.rs

@@ -3111,7 +3111,7 @@ fn partitioned_codec_fixture() -> (
 }
 
 const PARTITIONED_FORMAT_STATE_DIGEST: &str =
-    "sha256:0e91cd10d5431cfef570b744a2bf0cac30198cc34a4f1d0b940c7db0eabd65de";
+    "sha256:ca971dd9b11abf99ed277e3f7808e23ec2a7b79dd38f431d81ed907ada6d6c21";
 const PARTITIONED_FORMAT_SEGMENTS: &[(&str, u64)] = &[
     (
         "sha256:8e9ad377067c5f3b8f967a8b6e0ebe75c061683b6a33e83502b7a324373fec72",