docs(review 002): pre-publish coverage, convention, and cleanup review
- One hard publishing blocker: missing README.md (R-01)
- Three expect() calls in library code violate AGENTS.md §2 (R-02)
- Unnecessary #[allow(dead_code)] on generate_request_id (R-03)
- Seven files below 90% line coverage, clustered in post-Unit-2 paths:
single-stream call mode (R-04), ChannelsAdapter::handle() (R-05),
ChannelCore/open-op machinery (R-06), SendStream/RecvStream (R-07),
make_sink_forwarding_handler (R-08), ChannelsSessionEnv (R-09),
CallClient accessors (R-10)
- Minor smells: too_many_arguments annotations (R-11), stub handlers (R-12)
- Five-unit remediation plan, each independently shippable
Verification: 483 tests pass, clippy/fmt/doc clean, 91.97% line coverage
deepseek-v4-pro
deba5f7023