linea-mainnet: disable Maru [linea] finalization provider

Maru CL stuck behind tip was sending FCU with finalized ahead of EL head
(Besu -38002). Comment out [linea] until EL catches tip (no enabled flag).

Co-authored-by: Cursor <cursoragent@cursor.com>

linea/mainnet/maru/config.toml.template

@@ -1,10 +1,14 @@
-# Uncomment the below [linea] section for finalized L2 block tag
-[linea]
-contract-address = "0xd19d4B5d358258f05D7B411E21A1460D11B0876F"
-l1-eth-api = { endpoint = "${L1_RPC}" }
-l1-polling-interval = "6 seconds"
-l1-highest-block-tag = "finalized"
-l2-eth-api-endpoint = { endpoint = "${SEQUENCER}" }
+# [linea] finalization provider DISABLED (2026-07-31): Maru CL stuck at slot
+# 6764022 with EL head ~24k behind tip; Maru sent FCU finalized ahead of EL
+# head → Besu -38002 Invalid forkchoice. Maru has no linea.enabled flag —
+# presence of [linea] enables the provider; comment out to disable. Re-enable
+# (uncomment) once EL has caught tip.
+# [linea]
+# contract-address = "0xd19d4B5d358258f05D7B411E21A1460D11B0876F"
+# l1-eth-api = { endpoint = "${L1_RPC}" }
+# l1-polling-interval = "6 seconds"
+# l1-highest-block-tag = "finalized"
+# l2-eth-api-endpoint = { endpoint = "${SEQUENCER}" }
 
 [persistence]
 data-path = "/opt/maru/data"