v0.6.8

Patch release in the v0.6 "Kentucky Butter" line. devcake-cli stays at 0.1.9. No profile change: devcake up --release v0.6.8 is the whole upgrade. A stored config that still carries attach_merged_changeset_to_pmo logs the usual unknown-key warning on load and runs without it — nothing to migrate.

Retired — the deployment-global "attach merged change set to PMO" toggle and its Settings → Policies → Delivery card. With the delivery destination shipped in v0.6.7, the ticket receives a change set exactly when the mission's recorded destination is the ticket, or — as always — after merge for the invisible internal forge. A deployment-wide switch had no place left: configured repositories no longer receive a post-merge archive; the forge pull request is their canonical artifact. ADR-0017 gains the addendum that records the decision, the rejected alternatives and the residuals.

Runs carry their delivery destination. The Runs API rows and the CSV export gain delivery_to (repository, ticket, or empty for older records) right after pr_url; the mission drawer labels a ticket-destination pull request "PR → ticket".

Full detail: CHANGELOG.md and the living log in docs/16-roadmap.md.