doma-testnet: vendor rollup.json with chain_op_config

Conduit's testnet rollup.json (doma-dev-ix58nm4rnd) omits chain_op_config,
crashing op-node v1.19.0 with 'cfg.Rollup.ChainOpConfig is nil'. Vendor a
complete rollup.json (chain_op_config eip1559 6/50/250, confirmed identical
in mainnet rollup.json and testnet genesis optimism config) plus the
post-fjord fork times baked in, mounted via custom_config so op-node uses
the local file instead of curling Conduit's incomplete one.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

op/doma/testnet/rollup.json

@@ -0,0 +1,44 @@
+{
+  "genesis": {
+    "l1": {
+      "hash": "0x4e3ab0dd0e07b3f2c04e5678b14c69197a4341c9db38f6a2e93a966b84347330",
+      "number": 7459270
+    },
+    "l2": {
+      "hash": "0x1a551331902837e62bea81ae4e11af1dd62e481bb0f1803233c5c275d3f7d480",
+      "number": 0
+    },
+    "l2_time": 1736491908,
+    "system_config": {
+      "batcherAddr": "0x7bff49d5c9ba8e518061f4978e8ff0920eaa3a7c",
+      "overhead": "0x00000000000000000000000000000000000000000000000000000000000000bc",
+      "scalar": "0x0000000000000000000000000000000000000000000000000000000000010b30",
+      "gasLimit": 30000000
+    }
+  },
+  "block_time": 2,
+  "max_sequencer_drift": 600,
+  "seq_window_size": 3600,
+  "channel_timeout": 300,
+  "l1_chain_id": 11155111,
+  "l2_chain_id": 97476,
+  "regolith_time": 0,
+  "canyon_time": 0,
+  "delta_time": 0,
+  "ecotone_time": 0,
+  "fjord_time": 0,
+  "batch_inbox_address": "0x7a666bec1e5ea04f832a03edd36516dcc04f8712",
+  "deposit_contract_address": "0x330c5f4dbe72ac987015d3dd390eba3b25968b1c",
+  "l1_system_config_address": "0xa6378952eb60076ac26546c02c93d32b38f8655e",
+  "protocol_versions_address": "0x0000000000000000000000000000000000000000",
+  "da_challenge_contract_address": "0x0000000000000000000000000000000000000000",
+  "chain_op_config": {
+    "eip1559Elasticity": 6,
+    "eip1559Denominator": 50,
+    "eip1559DenominatorCanyon": 250
+  },
+  "granite_time": 1744729200,
+  "holocene_time": 1744822800,
+  "isthmus_time": 1744905600,
+  "jovian_time": 1768978801
+}