Release 0.9.74

[michael-denyer]

What changed

• VERSION is 0.9.74, and bun tools/generate.mjs stamped package.json and the four manifests.
• CHANGES.md gains the 0.9.74 entry, assembled from the proposed entries of fix(orch): serialize stale-lock takeovers and round-trip formula-leading cells #219 to Bound Autopilot's verify rounds and state the program size before fan-out #226.

Why

Installs update by version number, so the fixes merged in #219 to #226 reach nobody until the version moves.

Verification

On this tree, on macOS:

• bun tools/generate.mjs --check passes.
• bun test tests/ gives 1173 pass, 36 skip, 0 fail.
• bun test orch watch-pr in the scripts directory gives 223 pass, 0 fail.
• The dry runs of tools/sync.mjs at the pinned SHAs report no failure for pstack or cursor-team-kit.

Open risks

• The last change on each of fix(orch): serialize stale-lock takeovers and round-trip formula-leading cells #219 to fix(scripts): fail closed in the fork check, log.sh, check-playbooks, and resume #225 had gate and probe reruns but no independent review.
• fix(pi): repair /loop stop, print-mode /loop, and agent restore #222 carries one known gap, described in its body, in /loop during a manual /compact.