Implements the per-kind orchestration (clone @ pinned ref, inject core's
freshly-generated wire-vectors fixture via ETHERPAD_WIRE_VECTORS, run each
client's vectorTest + smokeCmd against the booted server) in a testable
run-clients.sh, and flips the three manifest entries to enabled, pinned to the
commits that carry their Phase 2 tests:
ether/pad#1, ether/etherpad-cli-client#136, ether/etherpad-desktop#78.
Validated end-to-end locally against a real core: all three clients' vectors +
live smoke pass. Refs should be bumped to the squash-merge commits once those
client PRs land.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>