Add Gloas boilerplate (#7728)

Adds the required boilerplate code for the Gloas (Glamsterdam) hard fork. This allows PRs testing Gloas-candidate features to test fork transition.

This also includes de-duplication of post-Bellatrix readiness notifiers from #6797 (credit to @dapplion)

common/eth2/src/types.rs

@@ -1140,7 +1140,7 @@ impl<'de> ContextDeserialize<'de, ForkName> for SsePayloadAttributes {
             ForkName::Capella => {
                 Self::V2(Deserialize::deserialize(deserializer).map_err(convert_err)?)
             }
-            ForkName::Deneb | ForkName::Electra | ForkName::Fulu => {
+            ForkName::Deneb | ForkName::Electra | ForkName::Fulu | ForkName::Gloas => {
                 Self::V3(Deserialize::deserialize(deserializer).map_err(convert_err)?)
             }
         })
@@ -2405,6 +2405,9 @@ mod test {
                 rng,
             )),
             ExecutionPayload::Fulu(ExecutionPayloadFulu::<MainnetEthSpec>::random_for_test(rng)),
+            ExecutionPayload::Gloas(ExecutionPayloadGloas::<MainnetEthSpec>::random_for_test(
+                rng,
+            )),
         ];
         let merged_forks = &ForkName::list_all()[2..];
         assert_eq!(
@@ -2459,6 +2462,17 @@ mod test {
                     blobs_bundle,
                 }
             },
+            {
+                let execution_payload =
+                    ExecutionPayload::Gloas(
+                        ExecutionPayloadGloas::<MainnetEthSpec>::random_for_test(rng),
+                    );
+                let blobs_bundle = BlobsBundle::random_for_test(rng);
+                ExecutionPayloadAndBlobs {
+                    execution_payload,
+                    blobs_bundle,
+                }
+            },
         ];
         let blob_forks = &ForkName::list_all()[4..];
 

common/eth2_network_config/built_in_network_configs/chiado/config.yaml

@@ -50,6 +50,9 @@ ELECTRA_FORK_EPOCH: 948224 # Thu Mar 6 2025 09:43:40 GMT+0000
 # Fulu
 FULU_FORK_VERSION: 0x0600006f
 FULU_FORK_EPOCH: 18446744073709551615
+# Gloas
+GLOAS_FORK_VERSION: 0x0700006f
+GLOAS_FORK_EPOCH: 18446744073709551615
 
 # Time parameters
 # ---------------------------------------------------------------
@@ -154,3 +157,4 @@ DATA_COLUMN_SIDECAR_SUBNET_COUNT: 128
 SAMPLES_PER_SLOT: 8
 CUSTODY_REQUIREMENT: 4
 MAX_BLOBS_PER_BLOCK_FULU: 12
+# Gloas

common/eth2_network_config/built_in_network_configs/gnosis/config.yaml

@@ -47,6 +47,9 @@ ELECTRA_FORK_EPOCH: 1337856 # 2025-04-30T14:03:40.000Z
 # Fulu
 FULU_FORK_VERSION: 0x06000064
 FULU_FORK_EPOCH: 18446744073709551615
+# Gloas
+GLOAS_FORK_VERSION: 0x07000064
+GLOAS_FORK_EPOCH: 18446744073709551615
 
 # Time parameters
 # ---------------------------------------------------------------
@@ -138,3 +141,5 @@ DATA_COLUMN_SIDECAR_SUBNET_COUNT: 128
 SAMPLES_PER_SLOT: 8
 CUSTODY_REQUIREMENT: 4
 MAX_BLOBS_PER_BLOCK_FULU: 12
+
+# Gloas

common/eth2_network_config/built_in_network_configs/holesky/config.yaml

@@ -39,6 +39,9 @@ ELECTRA_FORK_EPOCH: 115968
 # Fulu
 FULU_FORK_VERSION: 0x07017000
 FULU_FORK_EPOCH: 18446744073709551615
+# Gloas
+GLOAS_FORK_VERSION: 0x08017000
+GLOAS_FORK_EPOCH: 18446744073709551615
 
 # Time parameters
 # ---------------------------------------------------------------
@@ -145,4 +148,6 @@ SAMPLES_PER_SLOT: 8
 CUSTODY_REQUIREMENT: 4
 VALIDATOR_CUSTODY_REQUIREMENT: 8
 BALANCE_PER_ADDITIONAL_CUSTODY_GROUP: 32000000000
-MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS: 4096
+MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS: 4096
+
+# Gloas

common/eth2_network_config/built_in_network_configs/hoodi/config.yaml

@@ -44,6 +44,10 @@ ELECTRA_FORK_EPOCH: 2048
 FULU_FORK_VERSION: 0x70000910
 FULU_FORK_EPOCH: 18446744073709551615
 
+# Gloas
+GLOAS_FORK_VERSION: 0x80000910
+GLOAS_FORK_EPOCH: 18446744073709551615
+
 
 # Time parameters
 # ---------------------------------------------------------------
@@ -159,5 +163,7 @@ VALIDATOR_CUSTODY_REQUIREMENT: 8
 BALANCE_PER_ADDITIONAL_CUSTODY_GROUP: 32000000000
 MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS: 4096
 
+# Gloas
+
 # EIP7732
 MAX_REQUEST_PAYLOADS: 128

common/eth2_network_config/built_in_network_configs/mainnet/config.yaml

@@ -53,6 +53,9 @@ ELECTRA_FORK_EPOCH: 364032 # May 7, 2025, 10:05:11am UTC
 # Fulu
 FULU_FORK_VERSION: 0x06000000
 FULU_FORK_EPOCH: 18446744073709551615
+# Gloas
+GLOAS_FORK_VERSION: 0x07000000
+GLOAS_FORK_EPOCH: 18446744073709551615
 
 # Time parameters
 # ---------------------------------------------------------------
@@ -161,3 +164,5 @@ CUSTODY_REQUIREMENT: 4
 VALIDATOR_CUSTODY_REQUIREMENT: 8
 BALANCE_PER_ADDITIONAL_CUSTODY_GROUP: 32000000000
 MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS: 4096
+
+# Gloas

common/eth2_network_config/built_in_network_configs/sepolia/config.yaml

@@ -40,6 +40,14 @@ DENEB_FORK_EPOCH: 132608
 ELECTRA_FORK_VERSION: 0x90000074
 ELECTRA_FORK_EPOCH: 222464
 
+# Fulu
+FULU_FORK_VERSION: 0x90000075
+FULU_FORK_EPOCH: 18446744073709551615
+
+# Gloas
+GLOAS_FORK_VERSION: 0x90000076
+GLOAS_FORK_EPOCH: 18446744073709551615
+
 # Time parameters
 # ---------------------------------------------------------------
 # 12 seconds
@@ -147,3 +155,5 @@ CUSTODY_REQUIREMENT: 4
 VALIDATOR_CUSTODY_REQUIREMENT: 8
 BALANCE_PER_ADDITIONAL_CUSTODY_GROUP: 32000000000
 MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS: 4096
+
+# Gloas