chore: update tend workflows (0.1.6 → 0.1.7)

[prql-bot]

Automated nightly regeneration of tend's workflow files, picking up the tend 0.1.6 → 0.1.7 release. The harness action moved to the max-sixty/tend/claude subpath (actions are now named by harness), and the review workflow gained allow-unsafe-pr-checkout: true so fork-PR reviews run.

tend version: 0.1.6 → 0.1.7

Notable changes:

• Actions are now named by harness; shared step scripts factored out — this is why the generated uses: refs move to max-sixty/tend/claude@0.1.7 (refactor(actions): share step scripts; name actions by harness max-sixty/tend#712).
• Review workflow opts into v7 fork-PR checkout (allow-unsafe-pr-checkout) so reviews run on fork PRs (fix(review): opt into v7 fork-PR checkout so fork reviews run max-sixty/tend#725).
• CI-monitoring guidance: poll loops trimmed to fit the Bash tool's 10-minute cap (fix(running-in-ci): trim CI-poll loops to fit Bash tool's 10-min cap max-sixty/tend#695).
• running-in-ci: surface scope blockers instead of silently routing around them (fix(running-in-ci): surface scope blockers instead of silently routing around them max-sixty/tend#717).
• nightly: base the workflow-regen worktree on an open PR rather than a branch ref (fix(nightly): base workflow-regen worktree on open PR, not branch ref max-sixty/tend#721).

This supersedes the naive Dependabot bump in #6031: 0.1.7 moved the action to the tend/claude subpath, which a bare @0.1.6→@0.1.7 ref bump doesn't account for.

Compare: max-sixty/tend@0.1.6...0.1.7