hashkeychain: commit genesis assets + drop config-download init containers

Removes the alpine genesis/rollup init containers and their
service_completed_successfully gate for all hashkeychain variants. The gate
wedged us-40: a reconcile compose-up recreated the op-reth EL but not the
init-gated op-node CL -> fresh EL + stale CL -> 2h engine freeze -> sole-provider
market -> $0 (2026-07-21). genesis.json now committed beside the existing
rollup.json so render_templates auto-detects custom_genesis/custom_rollup and
binds the local files; CL now depends only on the EL (service_started,
restart:true), identical to op-mainnet/op-sepolia. No S3 on the boot path.

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

op/geth/hashkeychain-testnet-op-geth-pruned-pebble-path--kona.yml

@@ -29,22 +29,6 @@ x-logging-defaults: &logging-defaults
 #   --data '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
 
 services:
-  hashkeychain-testnet-init:
-    image: alpine:3.21
-    user: root
-    entrypoint: [/bin/sh, -c]
-    command:
-      - |
-        apk add --no-cache curl wget
-        mkdir -p /config
-        curl -fsSL -o /config/genesis.json "https://hashkeychain.s3.ap-southeast-1.amazonaws.com/testnet/genesis.json"
-    restart: no
-    networks:
-      - chains
-    volumes:
-      - ./op/hashkeychain/testnet:/config
-    logging: *logging-defaults
-
   hashkeychain-testnet:
     image: ${HASHKEYCHAIN_GETH_IMAGE:-us-docker.pkg.dev/oplabs-tools-artifacts/images/op-geth}:${HASHKEYCHAIN_TESTNET_GETH_VERSION:-v1.101702.2}
     sysctls:
@@ -104,9 +88,6 @@ services:
       - --authrpc.vhosts=*
     restart: unless-stopped
     stop_grace_period: 5m
-    depends_on:
-      hashkeychain-testnet-init:
-        condition: service_completed_successfully
     networks:
       - chains
     volumes: