Fix Merlin.create→Merlin.v in prune/lib to match ocaml-merlin API rename.
Fix space-test/dune-project: remove duplicate root package, add missing
space-test package stanza so dune fmt passes.

Add READMEs for: ocaml-fdir, ocaml-initramfs, ocaml-jailhouse,
ocaml-linkedin, ocaml-openamp, ocaml-pid1, ocaml-rpmsg, ocaml-sbom,
ocaml-slack, ocaml-vz, ocaml-zephyr, space, space-block, space-ground,
space-net, space-sim, space-test, space-wire.

- E340: Extract err_unexpected_message helper in tcpcl_adapter
- E105: Replace catch-all exception handlers with specific exceptions
(Eio.Io in tcpcl close, Invalid_argument/Failure in wire decoders)
- Refactor tcpcl_adapter recv_message into smaller functions
- dune fmt formatting fixes

- E005: extract send_housekeeping from run_sim to shorten function
- E619: use Fmt.failwith instead of failwith (Fmt.str ...)
- E405/E600: fix test_e2e.mli to export single suite pair with docs