[matrixarkai]

Summary

• plan the current manifest, placement, and as many as 32 data-group routes in one confirmed metadata frame
• resolve as many as 32 chunk-group routes per metadata barrier
• remember older server width limits and use bounded eight- or four-route reads on later operations
• use the widened confirmed plan for distributed object writes

For a 32-group object, the planning path now uses one metadata exchange instead of a manifest read, a placement read, and four route reads.

Validation

• cargo check -j1 --all-targets --all-features
• cargo test -j1 --all-features --test object_writer_connections -- --test-threads=1 (20 passed)
• cargo test -j1 --all-features --lib thirty_two_routes -- --test-threads=1 (2 passed)
• full library sweep: 725 passed, 33 ignored; one unrelated timing-sensitive case failed, then both exact matching cases passed on an immediate single-threaded rerun