Shards transaction conflicts across resolvers by key range.

Takes transaction conflict sections and creates resolver-specific transaction binaries containing only conflicts within each resolver's key range.

Process

1. Extract read/write conflicts from transaction sections
2. Distribute conflict ranges across resolvers using sweep algorithm
3. Split ranges that span multiple resolver boundaries
4. Build Transaction-format binaries for each resolver

Usage

sharded_transactions = ConflictSharding.shard_conflicts_across_resolvers(
  transaction_sections,
  resolver_ends,  # [{end_key, resolver_pid}]
  resolver_refs   # [resolver_pid]
)
# Returns %{resolver_pid => transaction_binary}