Auto mode with a direction and no planner does nothing, silently: a migrated repository gets a planner or says why not #7637

Owner, 2026-11-01: migrated trevato/pixel-plays, set auto mode, gave the direction "build more games!", and saw nothing new.

Verified: its crew is only torque, a builder. planIfThin returns "no planner on the crew" (src/crew/autonomy.ts:677) before it writes a direction issue, so directionIssueId stays null and the direction goes nowhere. Nothing on the page says so. The migration itself is great and should stay that fast.

Done when:

• [ ] Saving a direction on a repository with no planner adds one, or says beside the direction that nothing will act on it, with one button to add one. Pick the simpler of the two.
• [ ] A migrated repository in auto mode with a direction gets its first planned issues without any further step. Test the path end to end.
• [ ] The issue's page shows why nothing is happening whenever a saved direction has no direction issue.

Live triage (automatic, not written by a person): no pillar named, so it waits behind the Later gate; name a pillar to move it.