Replace Printf.sprintf with Fmt.str and Printf.printf with Fmt.pr
across requests, retry, and rpmsg test files.

Add pp pretty-printer for Error.t. Rename create_ept_ioctl to
ept_ioctl in rpmsg. Skip find_rel rename as it collides with the
rel field accessor.

Rename create/make to v in rpmsg, error, proxy, auth, version, and
other modules. Fix doc style issues in error.mli, requests.mli, and
expect_continue.mli. Update all callers.

Strip get_/make_/find_/create_ from 138 function definitions and all
call sites across ocaml-pds, ocaml-pid1, ocaml-precommit,
ocaml-publicsuffix, ocaml-qemu, ocaml-requests, ocaml-retry, and
ocaml-rpmsg. Use Module.v for constructors per the E331 convention.

Rename _get to get_entry in h2_hpack.ml and _iow to iow in rpmsg.ml
and test_wire.ml since these bindings are actually used.

- Validate HTTP-date time components (reject second=60) per RFC 9110
- Fix tty table truncation test to explicitly set overflow to Truncate
- Correct tty table.mli overflow default documentation
- Initialize crypto RNG in streaming-aead fuzz runner
- Add docstrings to test module mli files across requests and rpmsg

These are general-purpose OCaml libraries; their READMEs should describe
what the library does, not which product uses it.

Add missing periods to doc comments, fix [name] format mismatches,
and add pp pretty-printer to Publicsuffix.t.

- requests: convert test_signature, test_websocket, test_rfc9421_vectors
to modules exporting suite; add test.ml runner; delete standalone .mli
for test_simple/test_simple_head
- punycode: consolidate 2 test stanzas into single test.ml runner;
add .mli files; fix ace_prefix doc (E410)
- publicsuffix: rename psl_test.ml → test_psl.ml (E618)
- rpmsg: add missing test_rpmsg.mli and test_wire.mli (E600)

- ocaml-pds: test_blob_store (13 tests), test_sqlite_blockstore (14 tests)
- ocaml-publicsuffix: test_publicsuffix (21 tests, Mozilla PSL vectors),
test_publicsuffix_cmd (11 tests)
- ocaml-punycode: test_punycode_idna (51 tests, RFC 5891 IDNA vectors)
- ocaml-rpmsg: test_rpmsg (9 tests, Linux kernel rpmsg constants)

- xrpc_server: add on_listen callback with actual bound port (supports port 0)
- pds: register Eio.Switch.on_release for DB close in create/open_
- irmin: use on_listen in cmd_serve, close PDS in cmd_init, add interop cram test
- rpmsg: rename test_endpoint → test_rpmsg for consistency

- E320: shorten long identifier names in irmin/test/test_pds_interop.ml
- E335: remove underscore prefix from used bindings (env)
- E405: add doc comment to test_pds_interop.mli
- E600: flatten suite to single pair (string * test_case list)
- E610: extract PDS interop helpers into irmin/lib/pds_interop.ml
- E718: consolidate fuzz modules (punycode, rate-limit, requests, rpmsg)

- Change `run` signature to `string -> (string * test_case list) list -> unit`
matching Alcotest's grouping convention
- Fix `_name` bug: pass the name through to Alcotest.run_with_args
- Each fuzz module now exports `let suite = ("name", [test_case ...])`
- Entry points (fuzz.ml) collect suites: `Crowbar.run "pkg" [Fuzz_X.suite]`
- Remove stale `add_test`/`suite` API, keep only `test_case`/`run`
- Remove `let run () = ()` from fuzz_common.ml files
- Update merlint E725 rule to match new `let suite = ("name", ...)` pattern
- Update E725 test fixtures and expected output

- Restore cursor on exit via at_exit in Tty.Progress (fixes TTY corruption)
- Install SIGINT handler in monopam test for clean Ctrl-C
- Add 2s per-iteration timeout and 2s total budget to crowbar
- Group crowbar alcotest output by module prefix ("mdns: foo" → group "mdns")
- Skip fuzz runtest in afl context (enabled_if <> profile afl)
- Add merlint E725: enforce "module: description" fuzz test name convention

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.