~anthropic/claude-sonnet-latest → B (60:40)

Side A vendors an entire speculative RocksDB-backed collections crate (with docs, examples, benches, vast Cargo.lock churn) mainly to move Reddit JSON out of memory, adding large maintenance surface for a modest, somewhat premature startup-RAM optimization. Side B is a small, focused bugfix that removes shared sentinel delegate IDs which were silently corrupting multi-user authorship/voting (AgentBound collisions), with clear tests proving the real bug and its fix, delivering concrete correctness value with minimal footprint.