v0.7.8 — convergence run-train live path from the shipped CLI

[0.7.8] - 2026-07-13

Convergence — the run-train live path now works from the shipped CLI

Completes the broker live-path the SPECPKGMIN pilot surfaced as unusable from the
shipped CLI. Together these make phase-loop run-train actually open draft PRs. The
routing broker keeps a per-repo, per-train admission/evidence store so one node's
ambiguous outcome fail-closes only that repo, never siblings or unrelated trains
(broker root keyed by the roadmap's resolved-path hash).

• gh pr create is now a complete non-interactive argv (fix). The broker's
  GitHubBrokerAdapter issued gh pr create --draft with no --title/--body,
  which aborts when gh is not attached to a tty ("must provide --title and --body")
  — the branch pushed but no PR opened (outcome_ambiguous_blocked). It now derives
  a title from the branch HEAD commit subject, passes the request's pr_body as
  --body, pins --head <branch>, and appends --draft for draft requests.
  (agent-harness#207)
• build_routing_broker_client — one broker client serves a MULTI-repo train
  (new). build_github_broker_client binds one repo_path at construction, so a
  single client could only serve one repo; a cross-repo run_train mis-bound
  git -C <wrong-repo> on node 2+. The routing client binds a fresh
  GitHubBrokerAdapter per BrokerRequest.repo (the node's resolved workspace) AND
  keeps a per-repo admission + evidence store under broker_root/<repo-slug>.
  Per-repo stores are load-bearing for safety, not just routing: epoch_blocked is a
  global scan over a store and an ambiguous terminal is durable + permanent and can be
  tripped by a benign transient (e.g. a one-off ls-remote/gh network hiccup →
  remote-read-failed/pr-unconfirmed), so a shared store would let one repo's
  transient permanently fail-close every other repo. Per-repo stores scope the
  fail-closed epoch to exactly the repo whose mutation became ambiguous.
  (agent-harness#206)
• run-train CLI now wires a broker-authoritative coordinator (fix).
  _run_train_command builds a CoordinatorRuntime carrying the routing broker and
  passes it to run_train. Previously the CLI passed no runtime, so every publish
  fail-closed broker_required and the train opened ZERO PRs. The broker root is
  namespaced per train by the roadmap's resolved-path hash
  (<ledger-dir>/broker/<path-hash>) — so two distinct roadmap files, even
  same-stemmed and even under one explicit --ledger-dir, get distinct broker roots
  and an ambiguous outcome in one train never fail-closes a different train. (Keying on
  the stable path rather than the content digest keeps a resumed train on its own epoch
  across roadmap edits.) (agent-harness#205)

SPECPKGMIN

• Harness dogfood of the consiliency-spec-ingest wheel + GP interchange seam.
  An env-gated (SPEC_ROOT/GP_ROOT/HARNESS_ROOT) cross-repo integration test that
  builds + installs the wheel, runs evaluate(...), and checks the GP interchange
  seam; bounds every child process with a timeout. (agent-harness#204)