Lift reth static-file symlink guard: op-reth v2.3.2 verified through symlink

Live test on rpc-uk-4 (unichain-mainnet pruned, 166G static_files moved to
/slowdisk + symlinked): reth healed consistency, initialized the
StaticFileProducer, and resumed committing canonical blocks - full
read/write through the symlink. The guard's premise (old reth refusing
symlinked static_files) no longer holds; pre-v2 reths fail loudly at start,
fallback is --no-slowdisk. Restores/clones of reth nodes to SLOWDISK=True
hosts now offload statics automatically (NVMe is the scarce resource).
Note: reth also has --datadir.static-files for a flag-based layout later.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

clone-node.sh

@@ -517,15 +517,9 @@ main() {
     # Set up cleanup trap
     trap cleanup_all_ports EXIT INT TERM
     
-    # RETH GUARD: reth refuses to start when its static_files directory is a symlink.
-    # Match restore-volumes.sh: skip the whole /slowdisk static-file symlink offload
-    # for reth nodes and extract everything onto the primary disk.
-    if [[ "$1" == *reth* ]]; then
-        echo "WARNING: $1 contains 'reth' — static-file symlink offload disabled (reth broke whole-dir symlinks)"
-        echo "  All volumes will be extracted onto the primary disk (equivalent to --no-slowdisk)"
-        NO_SLOWDISK=true
-    fi
-    
+    # (RETH GUARD removed 2026-07-09: op-reth v2.3.2 verified running + WRITING through a
+    # symlinked static_files dir on rpc-uk-4. Pre-v2 reths that refuse symlinks fail loudly
+    # at start - rerun with --no-slowdisk for those.)
     setup_ssh_multiplex
     
     # the following sysctls are critical for high-latency networks