bob-sepolia: use local genesis/rollup for all variants, drop Conduit URLs

Conduit's downloaded genesis.json/rollup.json are faulty (rollup.json
lacks chain_op_config + post-Fjord fork times, crashing op-node v1.19.0).
The fixed configs live in op/bob/sepolia/. Removed the client_genesis /
node_rollup_json Conduit URLs from context.yml and regenerated, so all 7
bob-sepolia composes (geth + reth) now bind-mount ./op/bob/sepolia:/config
and drop the curl-from-Conduit init containers.

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

op/reth/bob-sepolia-op-reth-pruned-trace.yml

@@ -56,6 +56,7 @@ services:
     entrypoint: [op-reth, node]
     command:
       - --chain=/config/genesis.json
+      - --config=/config/reth/reth.toml
       - --datadir=/root/.local/share/reth
       - --engine.cross-block-cache-size=${BOB_SEPOLIA_RETH_STATE_CACHE:-4096}
       - --full
@@ -127,8 +128,6 @@ services:
       - OP_NODE_METRICS_ADDR=0.0.0.0
       - OP_NODE_METRICS_ENABLED=true
       - OP_NODE_METRICS_PORT=7300
-      - OP_NODE_OVERRIDE_GRANITE=1725984001
-      - OP_NODE_OVERRIDE_HOLOCENE=1732633200
       - OP_NODE_OVERRIDE_JOVIAN=1772548201
       - OP_NODE_OVERRIDE_PECTRABLOBSCHEDULE=1742486400
       - OP_NODE_P2P_ADVERTISE_IP=${IP}
@@ -145,8 +144,7 @@ services:
     entrypoint: [op-node]
     restart: unless-stopped
     depends_on:
-      bob-sepolia-op-reth-pruned:
-        condition: service_started
+      - bob-sepolia-op-reth-pruned
     networks:
       - chains
     volumes: