v0.2.0

Readable lossless inline codecs for records, objects, listings, trees, and
lockfiles: structure is stripped while every value stays readable at face value,
with no unreadable re-encoding and no decoder in the loop.

Unified inline-vs-offload routing on one expected-token-cost model, gated on
whether the offload preview covers a block's content: record arrays evict to the
store, objects and text ship inline.

New OffloadMode host control (Off, Auto, Always), also settable via the
SW_OFFLOAD_MODE proxy env var and enforced on every offload path.

Refreshed BENCHMARKS.md with measured numbers, plus new inline_bench, latency,
and accuracy bench harnesses.