feature-workflow v9.13.0 — preflight gate before push

Preflight gate before every push

If .feature-workflow.yml defines a preflight: command (a local CI-parity gate reproducing the required checks — build / typecheck / test / lint), feature-autopilot runs it before every push (impl-review push and ship push) and only pushes on green — catching a red tree before a CI round-trip. feature-init scaffolds a commented preflight: key for new repos; no key → CI-only (legacy behavior).

Pairs with engineering-standards v0.1.2, which adds the worktree location rule: worktrees go at <target-repo-root>/.worktrees/<branch>, derived from the target repo's root as a real path (pwd -P), never /tmp — a /tmp symlink breaks vite-node worker module resolution so the suite silently never runs.