diff --git a/Cargo.toml b/Cargo.toml
index a81d91d..3c98ddd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,12 +1,12 @@
 # file: Cargo.toml
-# version: 644
+# version: 645
 
 [workspace]
 resolver = "3"
 members = ["crates/ksp-app-backfill-desk", "crates/ksp-app-config-desk", "crates/ksp-app-raw-transaction-ingest-desk", "crates/ksp-app-solprices-desk", "crates/ksp-app-store-desk", "crates/ksp-app-wallet-desk", "crates/ksp-config-lib", "crates/ksp-core-lib", "crates/ksp-interface-lib", "crates/ksp-job-api", "crates/ksp-job-backfill-lib", "crates/ksp-logging-lib", "crates/ksp-offchain-transport-lib", "crates/ksp-onchain-transport-lib", "crates/ksp-program-api", "crates/ksp-raw-transaction-lib", "crates/ksp-store-api", "crates/ksp-store-lib", "crates/ksp-store-postgres-lib", "crates/ksp-wallet-lib", "crates/ksp-worker-api", "crates/ksp-worker-raw-transaction-ingest-lib"]
 
 [workspace.package]
-version = "0.3.16-pre.5.fix.1"
+version = "0.3.16-pre.6"
 edition = "2024"
 license = "MIT"
 repository = "https://git.sasedev.com/Sasedev/khadhroony-solana-project"
diff --git a/crates/ksp-store-postgres-lib/src/raw_transaction.rs b/crates/ksp-store-postgres-lib/src/raw_transaction.rs
index eb8f7c8..30e5bfc 100644
--- a/crates/ksp-store-postgres-lib/src/raw_transaction.rs
+++ b/crates/ksp-store-postgres-lib/src/raw_transaction.rs
@@ -1,5 +1,5 @@
 // file: crates/ksp-store-postgres-lib/src/raw_transaction.rs
-// version: 12
+// version: 13
 
 pub(crate) mod cursor;
 
@@ -48,6 +48,7 @@ const REHYDRATE_TRANSACTION_SQL: &str =
     "UPDATE ksp_raw_transactions SET block_time_unix_millis = $2, payload = $3, retention_state = 'full' WHERE signature = $1";
 const SELECT_CANONICAL_VARIANT_ID_SQL: &str =
     "SELECT canonical_variant_id::TEXT AS canonical_variant_id_text FROM ksp_raw_transaction_canonical_selectors WHERE transaction_signature = $1";
+const SELECT_CANONICAL_VARIANT_SELECTOR_SQL: &str = "SELECT canonical_variant_id::TEXT AS canonical_variant_id_text, canonical_revision::TEXT AS canonical_revision_text FROM ksp_raw_transaction_canonical_selectors WHERE transaction_signature = $1";
 const SELECT_EXACT_NATIVE_VARIANT_SQL: &str = "SELECT variant_id::TEXT AS variant_id_text FROM ksp_raw_transaction_variants WHERE transaction_signature = $1 AND origin_kind = 'native' AND slot = $2::TEXT::NUMERIC AND block_time_unix_millis IS NOT DISTINCT FROM $3 AND format_id = $4 AND format_version = $5 AND content_hash = $6 AND payload = $7 AND retention_state = 'full' ORDER BY variant_id ASC LIMIT 1";
 const SELECT_MAX_VARIANT_ID_SQL: &str =
     "SELECT COALESCE(MAX(variant_id), 0)::TEXT AS variant_id_text FROM ksp_raw_transaction_variants WHERE transaction_signature = $1";
@@ -55,8 +56,11 @@ const SELECT_TRANSACTION_VARIANT_LINK_SQL: &str =
     "SELECT transaction_signature, variant_id::TEXT AS variant_id_text FROM ksp_raw_transaction_observation_variants WHERE observation_key = $1";
 const UPDATE_ARCHIVED_TRANSACTION_SQL: &str =
     "UPDATE ksp_raw_transactions SET payload = NULL, retention_state = 'archived' WHERE signature = $1 AND retention_state = 'full'";
+const UPDATE_CANONICAL_TRANSACTION_PROJECTION_SQL: &str = "UPDATE ksp_raw_transactions SET slot = $2::TEXT::NUMERIC, block_time_unix_millis = $3, format_id = $4, format_version = $5, content_hash = $6, payload = $7, retention_state = 'full' WHERE signature = $1";
 const UPDATE_PURGED_TRANSACTION_SQL: &str = "UPDATE ksp_raw_transactions SET block_time_unix_millis = NULL, payload = NULL, retention_state = 'purged' WHERE signature = $1 AND retention_state = 'archived'";
 const UPDATE_REHYDRATED_TRANSACTION_VARIANT_SQL: &str = "UPDATE ksp_raw_transaction_variants SET block_time_unix_millis = $3, payload = $4, retention_state = 'full' WHERE transaction_signature = $1 AND variant_id = $2::TEXT::NUMERIC";
+const UPDATE_TRANSACTION_VARIANT_SELECTOR_SQL: &str = "UPDATE ksp_raw_transaction_canonical_selectors SET canonical_variant_id = $4::TEXT::NUMERIC, canonical_revision = $5::TEXT::NUMERIC, updated_at_unix_millis = $6 WHERE transaction_signature = $1 AND canonical_variant_id = $2::TEXT::NUMERIC AND canonical_revision = $3::TEXT::NUMERIC";
+const UPDATE_TRANSACTION_VARIANT_TO_FULL_SQL: &str = "UPDATE ksp_raw_transaction_variants SET payload = $8, retention_state = 'full' WHERE transaction_signature = $1 AND variant_id = $2::TEXT::NUMERIC AND slot = $3::TEXT::NUMERIC AND block_time_unix_millis IS NOT DISTINCT FROM $4 AND format_id = $5 AND format_version = $6 AND content_hash = $7 AND ((retention_state = 'archived' AND payload IS NULL) OR (retention_state = 'full' AND payload = $8))";
 
 struct RawLogMessagesContentConflictDiagnostic {
     available: bool,
@@ -697,10 +701,10 @@ pub(crate) async fn persist_raw_transaction_acquisition(
         std::result::Result::Ok(value) => value,
         std::result::Result::Err(error) => return std::result::Result::Err(error),
     };
-    let (entity_outcome, observed_variant_id) = if inserted {
-        (ksp_store_api::RawEntityWriteOutcome::Inserted, canonical_variant_id)
+    let (entity_outcome, observed_variant_id, canonical_promotion) = if inserted {
+        (ksp_store_api::RawEntityWriteOutcome::Inserted, canonical_variant_id, std::option::Option::None)
     } else {
-        let comparison_result = compare_existing_transaction(network, locked, &raw_transaction);
+        let comparison_result = compare_existing_transaction(network, locked.clone(), &raw_transaction);
         let comparison = match comparison_result {
             std::result::Result::Ok(value) => value,
             std::result::Result::Err(error) => {
@@ -711,14 +715,28 @@ pub(crate) async fn persist_raw_transaction_acquisition(
             },
         };
         match comparison {
-            ExistingTransactionMatch::Active => (ksp_store_api::RawEntityWriteOutcome::AlreadyPresent, canonical_variant_id),
+            ExistingTransactionMatch::Active => (ksp_store_api::RawEntityWriteOutcome::AlreadyPresent, canonical_variant_id, std::option::Option::None),
             ExistingTransactionMatch::ActiveCompatibleLessComplete => {
                 let variant_result = persist_or_reuse_native_transaction_variant(&sql_transaction, &raw_transaction, linked_at).await;
                 let variant_id = match variant_result {
                     std::result::Result::Ok(value) => value,
                     std::result::Result::Err(error) => return std::result::Result::Err(error),
                 };
-                (ksp_store_api::RawEntityWriteOutcome::AlreadyPresent, variant_id)
+                (ksp_store_api::RawEntityWriteOutcome::AlreadyPresent, variant_id, std::option::Option::None)
+            },
+            ExistingTransactionMatch::ActiveCompatibleMoreComplete => {
+                let variant_result = persist_or_reuse_native_transaction_variant(&sql_transaction, &raw_transaction, linked_at).await;
+                let variant_id = match variant_result {
+                    std::result::Result::Ok(value) => value,
+                    std::result::Result::Err(error) => return std::result::Result::Err(error),
+                };
+                let promotion_result =
+                    promote_more_complete_transaction_variant(&sql_transaction, &locked, &raw_transaction, canonical_variant_id, variant_id, linked_at).await;
+                let promotion = match promotion_result {
+                    std::result::Result::Ok(value) => value,
+                    std::result::Result::Err(error) => return std::result::Result::Err(error),
+                };
+                (ksp_store_api::RawEntityWriteOutcome::AlreadyPresent, variant_id, std::option::Option::Some(promotion))
             },
             ExistingTransactionMatch::Purged => {
                 if mode == ksp_store_api::RawTransactionAcquisitionMode::ForceRehydrate {
@@ -730,7 +748,7 @@ pub(crate) async fn persist_raw_transaction_acquisition(
                     if let std::result::Result::Err(error) = variant_result {
                         return std::result::Result::Err(error);
                     }
-                    (ksp_store_api::RawEntityWriteOutcome::Rehydrated, canonical_variant_id)
+                    (ksp_store_api::RawEntityWriteOutcome::Rehydrated, canonical_variant_id, std::option::Option::None)
                 } else {
                     let commit_result = sql_transaction.commit().await;
                     if commit_result.is_err() {
@@ -757,6 +775,9 @@ pub(crate) async fn persist_raw_transaction_acquisition(
     if commit_result.is_err() {
         return std::result::Result::Err(write_failed("raw_acquisition_commit"));
     }
+    if let std::option::Option::Some(transition) = canonical_promotion {
+        log_raw_transaction_canonical_promotion_committed(network, raw_transaction.slot(), transition);
+    }
     return std::result::Result::Ok(ksp_store_api::RawAcquisitionWriteOutcome::new(entity_outcome, observation_outcome));
 }
 
@@ -893,10 +914,19 @@ pub(crate) async fn transition_raw_transaction_retention(
     return commit_retention_outcome(sql_transaction, ksp_store_api::RawRetentionWriteOutcome::Applied).await;
 }
 
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+struct RawCanonicalPromotionTransition {
+    from_revision: u64,
+    from_variant_id: u64,
+    to_revision: u64,
+    to_variant_id: u64,
+}
+
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 enum ExistingTransactionMatch {
     Active,
     ActiveCompatibleLessComplete,
+    ActiveCompatibleMoreComplete,
     Purged,
 }
 
@@ -1229,6 +1259,182 @@ async fn persist_or_reuse_native_transaction_variant(
     };
 }
 
+async fn promote_more_complete_transaction_variant(
+    sql_transaction: &deadpool_postgres::Transaction<'_>,
+    locked: &RawTransactionDbRow,
+    incoming: &ksp_store_api::RawTransaction,
+    expected_canonical_variant_id: u64,
+    promoted_variant_id: u64,
+    updated_at_unix_millis: i64,
+) -> std::result::Result<RawCanonicalPromotionTransition, crate::PostgresBackendError> {
+    if promoted_variant_id == expected_canonical_variant_id {
+        return std::result::Result::Err(data_invalid("raw_variant_promotion_identity"));
+    }
+    let signature = incoming.reference().signature();
+    let signature_bytes: &[u8] = signature.as_bytes();
+    if locked.signature.as_slice() != signature_bytes {
+        return std::result::Result::Err(data_invalid("raw_variant_promotion_reference"));
+    }
+    let selector_result = sql_transaction.query_opt(SELECT_CANONICAL_VARIANT_SELECTOR_SQL, &[&signature_bytes]).await;
+    let selector_row = match selector_result {
+        std::result::Result::Ok(std::option::Option::Some(value)) => value,
+        std::result::Result::Ok(std::option::Option::None) => return std::result::Result::Err(data_invalid("raw_variant_promotion_selector_missing")),
+        std::result::Result::Err(_) => return std::result::Result::Err(write_failed("raw_variant_promotion_selector_query")),
+    };
+    let canonical_variant_id_text = match selector_row.try_get::<_, std::string::String>("canonical_variant_id_text") {
+        std::result::Result::Ok(value) => value,
+        std::result::Result::Err(_) => return std::result::Result::Err(data_invalid("raw_variant_promotion_selector_id")),
+    };
+    let current_canonical_variant_id = match decode_u64_decimal(canonical_variant_id_text.as_str(), "raw_variant_promotion_selector_id") {
+        std::result::Result::Ok(value) => value,
+        std::result::Result::Err(error) => return std::result::Result::Err(error),
+    };
+    if current_canonical_variant_id != expected_canonical_variant_id {
+        return std::result::Result::Err(data_invalid("raw_variant_promotion_selector_changed"));
+    }
+    let canonical_revision_text = match selector_row.try_get::<_, std::string::String>("canonical_revision_text") {
+        std::result::Result::Ok(value) => value,
+        std::result::Result::Err(_) => return std::result::Result::Err(data_invalid("raw_variant_promotion_revision")),
+    };
+    let current_revision = match decode_u64_decimal(canonical_revision_text.as_str(), "raw_variant_promotion_revision") {
+        std::result::Result::Ok(value) => value,
+        std::result::Result::Err(error) => return std::result::Result::Err(error),
+    };
+    let next_revision = match next_transaction_canonical_revision(current_revision) {
+        std::result::Result::Ok(value) => value,
+        std::result::Result::Err(error) => return std::result::Result::Err(error),
+    };
+    let preserve_result = preserve_previous_canonical_variant(sql_transaction, locked, expected_canonical_variant_id).await;
+    if let std::result::Result::Err(error) = preserve_result {
+        return std::result::Result::Err(error);
+    }
+    let archive_cleanup_result = sql_transaction.execute(DELETE_ARCHIVE_PAYLOAD_SQL, &[&signature_bytes]).await;
+    match archive_cleanup_result {
+        std::result::Result::Ok(count) if count <= 1 => {},
+        std::result::Result::Ok(_) => return std::result::Result::Err(data_invalid("raw_variant_promotion_archive_cleanup_count")),
+        std::result::Result::Err(_) => return std::result::Result::Err(write_failed("raw_variant_promotion_archive_cleanup")),
+    }
+    let slot_text = incoming.slot().to_string();
+    let block_time = match incoming.block_time() {
+        std::option::Option::Some(value) => match i64::try_from(value.unix_millis()) {
+            std::result::Result::Ok(decoded) => std::option::Option::Some(decoded),
+            std::result::Result::Err(_) => return std::result::Result::Err(data_invalid("raw_variant_promotion_block_time")),
+        },
+        std::option::Option::None => std::option::Option::None,
+    };
+    let format_version = i64::from(incoming.payload().format_version());
+    let content_hash = incoming.payload().content_hash();
+    let content_hash_bytes: &[u8] = content_hash.as_bytes();
+    let payload_bytes = incoming.payload().bytes();
+    let projection_result = sql_transaction
+        .execute(
+            UPDATE_CANONICAL_TRANSACTION_PROJECTION_SQL,
+            &[
+                &signature_bytes,
+                &slot_text.as_str(),
+                &block_time,
+                &incoming.payload().format_id().as_str(),
+                &format_version,
+                &content_hash_bytes,
+                &payload_bytes,
+            ],
+        )
+        .await;
+    match projection_result {
+        std::result::Result::Ok(1) => {},
+        std::result::Result::Ok(_) => return std::result::Result::Err(data_invalid("raw_variant_promotion_projection_count")),
+        std::result::Result::Err(_) => return std::result::Result::Err(write_failed("raw_variant_promotion_projection")),
+    }
+    let expected_variant_id_text = expected_canonical_variant_id.to_string();
+    let expected_revision_text = current_revision.to_string();
+    let promoted_variant_id_text = promoted_variant_id.to_string();
+    let next_revision_text = next_revision.to_string();
+    let selector_update_result = sql_transaction
+        .execute(
+            UPDATE_TRANSACTION_VARIANT_SELECTOR_SQL,
+            &[
+                &signature_bytes,
+                &expected_variant_id_text.as_str(),
+                &expected_revision_text.as_str(),
+                &promoted_variant_id_text.as_str(),
+                &next_revision_text.as_str(),
+                &updated_at_unix_millis,
+            ],
+        )
+        .await;
+    return match selector_update_result {
+        std::result::Result::Ok(1) => std::result::Result::Ok(RawCanonicalPromotionTransition {
+            from_revision: current_revision,
+            from_variant_id: expected_canonical_variant_id,
+            to_revision: next_revision,
+            to_variant_id: promoted_variant_id,
+        }),
+        std::result::Result::Ok(0) => std::result::Result::Err(data_invalid("raw_variant_promotion_stale_selector")),
+        std::result::Result::Ok(_) => std::result::Result::Err(data_invalid("raw_variant_promotion_selector_count")),
+        std::result::Result::Err(_) => std::result::Result::Err(write_failed("raw_variant_promotion_selector_update")),
+    };
+}
+
+async fn preserve_previous_canonical_variant(
+    sql_transaction: &deadpool_postgres::Transaction<'_>,
+    locked: &RawTransactionDbRow,
+    canonical_variant_id: u64,
+) -> std::result::Result<(), crate::PostgresBackendError> {
+    let state = match decode_retention_state(locked.retention_state.as_str()) {
+        std::result::Result::Ok(value) => value,
+        std::result::Result::Err(error) => return std::result::Result::Err(error),
+    };
+    let preserved_payload = if state == ksp_store_api::RawRetentionState::Full {
+        if locked.archive_payload.is_some() {
+            return std::result::Result::Err(data_invalid("raw_variant_promotion_full_shape"));
+        }
+        match locked.payload.as_ref() {
+            std::option::Option::Some(value) => value.as_slice(),
+            std::option::Option::None => return std::result::Result::Err(data_invalid("raw_variant_promotion_full_payload")),
+        }
+    } else if state == ksp_store_api::RawRetentionState::Archived {
+        if locked.payload.is_some() {
+            return std::result::Result::Err(data_invalid("raw_variant_promotion_archived_shape"));
+        }
+        match locked.archive_payload.as_ref() {
+            std::option::Option::Some(value) => value.as_slice(),
+            std::option::Option::None => return std::result::Result::Err(data_invalid("raw_variant_promotion_archived_payload")),
+        }
+    } else {
+        return std::result::Result::Err(data_invalid("raw_variant_promotion_retention_state"));
+    };
+    let signature_bytes: &[u8] = locked.signature.as_slice();
+    let canonical_variant_id_text = canonical_variant_id.to_string();
+    let content_hash_bytes: &[u8] = locked.content_hash.as_slice();
+    let update_result = sql_transaction
+        .execute(
+            UPDATE_TRANSACTION_VARIANT_TO_FULL_SQL,
+            &[
+                &signature_bytes,
+                &canonical_variant_id_text.as_str(),
+                &locked.slot_text.as_str(),
+                &locked.block_time_unix_millis,
+                &locked.format_id.as_str(),
+                &locked.format_version,
+                &content_hash_bytes,
+                &preserved_payload,
+            ],
+        )
+        .await;
+    return match update_result {
+        std::result::Result::Ok(1) => std::result::Result::Ok(()),
+        std::result::Result::Ok(_) => std::result::Result::Err(data_invalid("raw_variant_promotion_preserve_count")),
+        std::result::Result::Err(_) => std::result::Result::Err(write_failed("raw_variant_promotion_preserve")),
+    };
+}
+
+fn next_transaction_canonical_revision(current: u64) -> std::result::Result<u64, crate::PostgresBackendError> {
+    return match current.checked_add(1) {
+        std::option::Option::Some(value) if value != 0 => std::result::Result::Ok(value),
+        _ => std::result::Result::Err(data_invalid("raw_variant_canonical_revision_exhausted")),
+    };
+}
+
 async fn persist_transaction_variant_link(
     sql_transaction: &deadpool_postgres::Transaction<'_>,
     observation: &ksp_store_api::RawTransactionObservation,
@@ -1449,9 +1655,8 @@ fn compare_existing_transaction(
             log_raw_transaction_compatible_truncated_log_messages(network, &stored, incoming);
             std::result::Result::Ok(ExistingTransactionMatch::ActiveCompatibleLessComplete)
         },
-        ksp_store_api::RawTransactionVariantRelation::CompatibleMoreComplete
-        | ksp_store_api::RawTransactionVariantRelation::Conflict
-        | ksp_store_api::RawTransactionVariantRelation::Incomparable => {
+        ksp_store_api::RawTransactionVariantRelation::CompatibleMoreComplete => std::result::Result::Ok(ExistingTransactionMatch::ActiveCompatibleMoreComplete),
+        ksp_store_api::RawTransactionVariantRelation::Conflict | ksp_store_api::RawTransactionVariantRelation::Incomparable => {
             log_raw_transaction_content_conflict(network, &stored, incoming);
             std::result::Result::Err(conflict("raw_acquisition_content_conflict"))
         },
@@ -1705,6 +1910,21 @@ fn log_raw_transaction_compatible_truncated_log_messages(
     return;
 }
 
+fn log_raw_transaction_canonical_promotion_committed(network: &ksp_store_api::RawNetworkId, slot: u64, transition: RawCanonicalPromotionTransition) {
+    ksp_logging_lib::info!(
+        target: crate::TRACING_TARGET,
+        domain = "store.raw_transaction.canonical_promotion",
+        network = network.as_str(),
+        slot = slot,
+        from_variant_id = transition.from_variant_id,
+        to_variant_id = transition.to_variant_id,
+        from_revision = transition.from_revision,
+        to_revision = transition.to_revision,
+        "PostgreSQL Store committed a proved RAW transaction canonical promotion"
+    );
+    return;
+}
+
 fn log_raw_transaction_content_conflict(
     network: &ksp_store_api::RawNetworkId,
     stored: &ksp_store_api::RawTransaction,
diff --git a/crates/ksp-store-postgres-lib/tests/v003_variant_persistence.rs b/crates/ksp-store-postgres-lib/tests/v003_variant_persistence.rs
index 7d0b4c0..f49af43 100644
--- a/crates/ksp-store-postgres-lib/tests/v003_variant_persistence.rs
+++ b/crates/ksp-store-postgres-lib/tests/v003_variant_persistence.rs
@@ -1,5 +1,5 @@
 // file: crates/ksp-store-postgres-lib/tests/v003_variant_persistence.rs
-// version: 2
+// version: 3
 
 #![warn(missing_docs)]
 #![deny(unreachable_pub)]
@@ -59,12 +59,52 @@ fn v0_3_16_pre_004_legacy_observation_without_mapping_is_not_fabricated() {
 }
 
 #[test]
-fn v0_3_16_pre_005_shared_comparator_is_active_but_durable_conflict_and_promotion_stay_deferred() {
+fn v0_3_16_pre_006_shared_comparator_promotes_only_more_complete_and_keeps_conflict_deferred() {
     let source = include_str!("../src/raw_transaction.rs");
     assert!(source.contains("ksp_store_api::compare_raw_transaction_variants"));
-    assert!(source.contains("ksp_store_api::RawTransactionVariantRelation::CompatibleLessComplete"));
-    assert!(source.contains("ksp_store_api::RawTransactionVariantRelation::CompatibleMoreComplete"));
+    assert!(source.contains("ExistingTransactionMatch::ActiveCompatibleLessComplete"));
+    assert!(source.contains("ExistingTransactionMatch::ActiveCompatibleMoreComplete"));
+    assert!(source.contains("promote_more_complete_transaction_variant"));
+    assert!(source.contains("UPDATE ksp_raw_transaction_canonical_selectors SET canonical_variant_id"));
+    assert!(source.contains("canonical_revision = $5::TEXT::NUMERIC"));
+    assert!(source.contains("UPDATE ksp_raw_transactions SET slot = $2::TEXT::NUMERIC"));
+    assert!(source.contains("PostgreSQL Store committed a proved RAW transaction canonical promotion"));
+    assert!(!source.contains("log_raw_transaction_compatible_more_complete_log_messages"));
     assert!(!source.contains("INSERT INTO ksp_raw_transaction_conflicts"));
-    assert!(!source.contains("UPDATE ksp_raw_transaction_canonical_selectors SET canonical_variant_id"));
+    return;
+}
+
+#[test]
+fn v0_3_16_pre_006_promotion_is_inside_acquisition_transaction_and_preserves_previous_canonical() {
+    let source = include_str!("../src/raw_transaction.rs");
+    let start = source.find("pub(crate) async fn persist_raw_transaction_acquisition(");
+    let end = source.find("pub(crate) async fn record_raw_transaction_observation(");
+    let (start, end) = match (start, end) {
+        (std::option::Option::Some(start), std::option::Option::Some(end)) if start < end => (start, end),
+        _ => panic!("pre.006 acquisition function markers are missing"),
+    };
+    let body = &source[start..end];
+    let persist_variant = body.find("persist_or_reuse_native_transaction_variant");
+    let promote = body.find("promote_more_complete_transaction_variant");
+    let observation = body.find("persist_observation_row");
+    let commit = body.rfind("sql_transaction.commit().await");
+    let transition_log = body.find("log_raw_transaction_canonical_promotion_committed");
+    assert!(matches!(
+        (persist_variant, promote, observation, commit, transition_log),
+        (Some(persist_variant), Some(promote), Some(observation), Some(commit), Some(transition_log))
+            if persist_variant < promote && promote < observation && observation < commit && commit < transition_log
+    ));
+    let promotion_start = source.find("async fn promote_more_complete_transaction_variant(");
+    let promotion_end = source.find("async fn persist_transaction_variant_link(");
+    let (promotion_start, promotion_end) = match (promotion_start, promotion_end) {
+        (std::option::Option::Some(start), std::option::Option::Some(end)) if start < end => (start, end),
+        _ => panic!("pre.006 promotion helper markers are missing"),
+    };
+    let promotion = &source[promotion_start..promotion_end];
+    assert!(promotion.contains("preserve_previous_canonical_variant"));
+    assert!(promotion.contains("DELETE_ARCHIVE_PAYLOAD_SQL"));
+    assert!(promotion.contains("UPDATE_CANONICAL_TRANSACTION_PROJECTION_SQL"));
+    assert!(promotion.contains("UPDATE_TRANSACTION_VARIANT_SELECTOR_SQL"));
+    assert!(promotion.contains("next_transaction_canonical_revision"));
     return;
 }
diff --git a/crates/ksp-store-postgres-lib/unit_tests/raw_transaction.rs b/crates/ksp-store-postgres-lib/unit_tests/raw_transaction.rs
index 4ca07b0..bc0145c 100644
--- a/crates/ksp-store-postgres-lib/unit_tests/raw_transaction.rs
+++ b/crates/ksp-store-postgres-lib/unit_tests/raw_transaction.rs
@@ -1,5 +1,5 @@
 // file: crates/ksp-store-postgres-lib/unit_tests/raw_transaction.rs
-// version: 12
+// version: 13
 
 fn network() -> ksp_store_api::RawNetworkId {
     return match ksp_store_api::RawNetworkId::new("devnet") {
@@ -870,3 +870,33 @@ fn v0_3_16_pre_004_variant_link_contract_keeps_legacy_observations_unfabricated(
     assert!(!super::INSERT_TRANSACTION_VARIANT_LINK_SQL.contains("ON CONFLICT"));
     return;
 }
+
+#[test]
+fn v0_3_16_pre_006_canonical_revision_is_monotonic_and_bounded() {
+    assert_eq!(super::next_transaction_canonical_revision(1), std::result::Result::Ok(2));
+    let exhausted = super::next_transaction_canonical_revision(u64::MAX).err();
+    assert_eq!(exhausted.as_ref().map(|value| return value.kind()), std::option::Option::Some(crate::PostgresBackendErrorKind::DataInvalid));
+    assert_eq!(exhausted.as_ref().map(|value| return value.phase()), std::option::Option::Some("raw_variant_canonical_revision_exhausted"));
+    return;
+}
+
+#[test]
+fn v0_3_16_pre_006_promotion_sql_is_compare_guarded_and_projection_complete() {
+    assert!(super::SELECT_CANONICAL_VARIANT_SELECTOR_SQL.contains("canonical_revision::TEXT"));
+    assert!(super::UPDATE_TRANSACTION_VARIANT_SELECTOR_SQL.contains("canonical_variant_id = $2::TEXT::NUMERIC"));
+    assert!(super::UPDATE_TRANSACTION_VARIANT_SELECTOR_SQL.contains("canonical_revision = $3::TEXT::NUMERIC"));
+    assert!(super::UPDATE_TRANSACTION_VARIANT_SELECTOR_SQL.contains("canonical_variant_id = $4::TEXT::NUMERIC"));
+    assert!(super::UPDATE_CANONICAL_TRANSACTION_PROJECTION_SQL.contains("slot = $2::TEXT::NUMERIC"));
+    assert!(super::UPDATE_CANONICAL_TRANSACTION_PROJECTION_SQL.contains("content_hash = $6"));
+    assert!(super::UPDATE_CANONICAL_TRANSACTION_PROJECTION_SQL.contains("payload = $7"));
+    assert!(super::UPDATE_CANONICAL_TRANSACTION_PROJECTION_SQL.contains("retention_state = 'full'"));
+    assert!(super::UPDATE_TRANSACTION_VARIANT_TO_FULL_SQL.contains("slot = $3::TEXT::NUMERIC"));
+    assert!(super::UPDATE_TRANSACTION_VARIANT_TO_FULL_SQL.contains("block_time_unix_millis IS NOT DISTINCT FROM $4"));
+    assert!(super::UPDATE_TRANSACTION_VARIANT_TO_FULL_SQL.contains("format_id = $5"));
+    assert!(super::UPDATE_TRANSACTION_VARIANT_TO_FULL_SQL.contains("format_version = $6"));
+    assert!(super::UPDATE_TRANSACTION_VARIANT_TO_FULL_SQL.contains("content_hash = $7"));
+    assert!(super::UPDATE_TRANSACTION_VARIANT_TO_FULL_SQL.contains("retention_state = 'archived'"));
+    assert!(super::UPDATE_TRANSACTION_VARIANT_TO_FULL_SQL.contains("retention_state = 'full' AND payload = $8"));
+    assert!(!super::UPDATE_TRANSACTION_VARIANT_TO_FULL_SQL.contains("DELETE"));
+    return;
+}
diff --git a/deltas/0.3.16/pre.006.md b/deltas/0.3.16/pre.006.md
new file mode 100644
index 0000000..1f39bd7
--- /dev/null
+++ b/deltas/0.3.16/pre.006.md
@@ -0,0 +1,217 @@
+<!-- file: deltas/0.3.16/pre.006.md -->
+<!-- version: 1 -->
+
+# Delta `0.3.16-pre.006` — promotion atomique du canonique RAW
+
+## Base requise
+
+```text
+0.3.16-pre.005-fix.001 appliqué
+workspace.package.version = 0.3.16-pre.5.fix.1
+```
+
+Le gate opérateur fourni pour la base est propre : audits Rust/export/KSP/Markdown, `cargo check --workspace`, Clippy `-D warnings`, toutes les suites `ksp-store-api` et `ksp-store-postgres-lib` ciblées passent. Les preuves PostgreSQL live restent opt-in.
+
+L'audit de l'archive source fournie a relevé un unique artefact ignoré, `scripts/__pycache__/audit_rust_general_rules.cpython-313.pyc`, alors que `.gitignore` exclut `__pycache__/`. Cet artefact n'appartient pas au source ni au delta et est explicitement exclu de l'archive `pre.006`. Aucun autre candidat correspondant aux familles ignorées de `.gitignore` n'a été trouvé.
+
+## Version
+
+Cette tranche modifie le runtime PostgreSQL :
+
+```text
+workspace.package.version = 0.3.16-pre.6
+```
+
+## Objectif
+
+Rendre effectif le sens déjà reconnu par le comparateur partagé :
+
+```text
+canonique logMessages tronqué
++
+incoming logMessages complet strictement prouvé
+=> CompatibleMoreComplete
+=> variante entrante durable
+=> promotion canonique atomique
+=> ancien canonique conservé
+```
+
+Aucune règle de dominance nouvelle n'est ajoutée. `logMessages` reste la seule preuve automatique de complétude et les autres différences continuent à suivre la politique fail-closed de `pre.005`.
+
+## Promotion atomique
+
+Le chemin PostgreSQL `persist_raw_transaction_acquisition` traite désormais `CompatibleMoreComplete` dans la même transaction que l'acquisition :
+
+```text
+lock identité V001
+ensure bootstrap V003
+compare canonique / incoming
+persist ou reuse variante incoming exacte
+charger selector + revision
+conserver l'ancien canonique
+mettre à jour la projection V001
+mettre à jour selector + canonical_revision
+persist observation
+lier observation -> variante incoming
+COMMIT
+```
+
+Le selector est modifié avec une garde exacte sur :
+
+```text
+transaction_signature
+canonical_variant_id attendu
+canonical_revision attendue
+```
+
+La nouvelle révision est calculée par incrément borné `u64`; l'épuisement de la révision est fail-closed avant mutation canonique.
+
+Toute cardinalité inattendue ou changement du selector observé pendant la transaction provoque une erreur et laisse PostgreSQL rollbacker l'ensemble de la promotion.
+
+## Projection V001 cohérente
+
+Lors d'une promotion, la projection de compatibilité `ksp_raw_transactions` est remplacée par la représentation entrante complète :
+
+```text
+slot
+block_time_unix_millis
+format_id
+format_version
+content_hash
+payload
+retention_state = full
+```
+
+Le selector V003 n'est déplacé qu'au sein de la même transaction. Il ne peut donc pas être durablement avancé si la projection V001 échoue, ni inversement.
+
+## Conservation de l'ancien canonique
+
+L'ancienne variante canonique n'est jamais supprimée ni écrasée par la nouvelle variante.
+
+Cas `Full` : l'ancienne variante V003 est confirmée byte-exactement sur slot, block time, format, version, hash et payload avant tout remplacement de projection.
+
+Cas projection V001 `Archived` : les bytes encore disponibles dans `ksp_raw_transaction_archive_payloads` sont d'abord copiés ou confirmés byte-exacts dans l'ancienne variante V003, avec la même vérification de métadonnées, puis l'archive V001 devenue obsolète est supprimée avant de remettre la projection V001 à `Full` sur le nouveau canonique.
+
+Cette copie de sauvegarde est une nécessité de promotion/rollback local, pas l'ouverture de la politique générale de rétention des variantes prévue en `0.3.17`.
+
+Aucune reconstruction réseau n'est utilisée.
+
+## Révision et historique minimal
+
+`canonical_revision` devient effectivement monotone lors d'une promotion automatique et constitue la garde durable du selector courant.
+
+Un journal opérationnel minimal est émis uniquement après le `COMMIT` réussi de l'acquisition. Il porte seulement le réseau, le slot, l'ancien/nouveau `variant_id` et l'ancienne/nouvelle `canonical_revision`; aucun payload ni signature n'est journalisé. Une promotion rollbackée n'est donc jamais annoncée comme commitée.
+
+Cette tranche n'ajoute pas de table append-only supplémentaire : le journal durable complet des actions/résolutions et les participants de conflit restent explicitement différés par le plan 038 à `0.3.17`. `pre.006` conserve donc le scope V003 déjà figé et n'altère aucun checksum de migration.
+
+## Conflits toujours différés
+
+Cette tranche ne modifie pas le comportement durable de :
+
+```text
+Conflict
+Incomparable
+```
+
+Ils restent projetés vers `raw_acquisition_content_conflict` jusqu'à `0.3.16-pre.007`.
+
+En particulier, `pre.006` n'écrit toujours pas dans :
+
+```text
+ksp_raw_transaction_conflicts
+```
+
+et ne rend encore aucun conflit non terminal côté Worker.
+
+## Tests et canaris
+
+Les tests unitaires PostgreSQL ajoutés verrouillent :
+
+- l'incrément borné de `canonical_revision` ;
+- la garde selector par ancien `canonical_variant_id` et ancienne revision ;
+- la projection V001 complète vers le nouveau canonique `Full` ;
+- la conservation locale d'une ancienne variante `Archived` ou déjà `Full`.
+
+Le canari `v003_variant_persistence.rs` est avancé de `pre.005` vers `pre.006` et exige désormais :
+
+- le chemin `ActiveCompatibleMoreComplete` ;
+- la persistance de la variante avant promotion ;
+- la promotion avant l'observation et avant le commit final ;
+- l'update du selector et de `canonical_revision` ;
+- l'update de la projection V001 ;
+- la conservation de l'ancien canonique ;
+- le journal opérationnel de promotion placé après le commit réussi ;
+- l'absence persistante d'écriture dans la table de conflits avant `pre.007`.
+
+## Fichiers modifiés
+
+```text
+Cargo.toml
+crates/ksp-store-postgres-lib/src/raw_transaction.rs
+crates/ksp-store-postgres-lib/tests/v003_variant_persistence.rs
+crates/ksp-store-postgres-lib/unit_tests/raw_transaction.rs
+```
+
+## Fichier ajouté
+
+```text
+deltas/0.3.16/pre.006.md
+```
+
+## Fichiers supprimés
+
+```text
+aucun
+```
+
+## Validation exécutée lors de la génération
+
+Sur le checkout complet final :
+
+```bash
+python3 scripts/audit_rust_workspace_rules.py
+python3 scripts/audit_markdown_tables.py README.md RULES.md ROADMAP.md CHANGELOG.md docs prompts crates deltas
+```
+
+Résultat : audits Rust/export/KSP et Markdown propres.
+
+Le ZIP minimal final est ensuite appliqué sur une copie fraîche de `0.3.16-pre.005-fix.001`. Les mêmes audits y restent propres, les cinq fichiers livrés sont byte-identiques au checkout de génération et les 98 ressources de migration PostgreSQL restent byte-identiques à la base.
+
+Des canaris statiques supplémentaires ont été rejoués sur le source final et sur le replay pour confirmer l'ordre : variante -> promotion -> observation -> mapping -> commit -> journal opérationnel, l'existence des updates selector/projection, la conservation byte-exacte de l'ancien canonique et l'absence d'écriture de conflit.
+
+Le toolchain Rust n'est pas installé dans l'environnement de génération ; `cargo fmt`, `cargo check`, Clippy et les tests Cargo ne sont donc pas déclarés exécutés ici. Le gate Cargo propre de la base provient du log opérateur fourni avec `pre.005-fix.001`.
+
+## Validation opérateur demandée
+
+```bash
+cargo fmt --all
+cargo fmt --all -- --check
+
+python3 scripts/audit_rust_workspace_rules.py
+python3 scripts/audit_markdown_tables.py README.md RULES.md ROADMAP.md CHANGELOG.md docs prompts crates deltas
+
+cargo check --workspace
+cargo clippy --workspace --all-targets --all-features -- -D warnings
+
+cargo test -p ksp-store-api --all-targets --all-features
+cargo test -p ksp-store-postgres-lib --all-targets --all-features
+```
+
+Les preuves PostgreSQL live restent opt-in pour cette tranche ; elles pourront être rejouées séparément sur une base dédiée.
+
+## Décisions prises
+
+- une promotion automatique n'est admise que pour `CompatibleMoreComplete` déjà prouvé par le comparateur partagé ;
+- la projection V001 et le selector V003 restent une seule mutation transactionnelle ;
+- l'ancien canonique est conservé localement avant tout remplacement de projection ;
+- `canonical_revision` est incrémentée avec garde compare-and-set ;
+- aucune migration existante n'est modifiée ;
+- le journal append-only complet reste reporté selon le plan 038.
+
+## Questions ouvertes
+
+Aucune question bloquante pour cette tranche. Les conflict cases durables et l'outcome Worker non terminal appartiennent à `pre.007`.
+
+## Suite
+
+Après gate propre : `0.3.16-pre.007` — conflit durable minimal + intégration Worker : variante divergente conservée, case `Open`, outcome Store non terminal, arbitrage run-local limité à l'autorité du Store et health `Degraded` lorsque requis.