chore(tasks): mark p9-fb-06 in_progress

Final flip to completed lands in a separate one-line commit AFTER PR
merges so spec history reflects reality.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tasks/p9/p9-fb-06-data-reset-command.md

@@ -3,7 +3,7 @@ phase: P9
 component: kebab-cli + kebab-app
 task_id: p9-fb-06
 title: "kebab reset / nuke command"
-status: planned
+status: in_progress
 depends_on: []
 unblocks: []
 contract_source: ../../docs/superpowers/specs/2026-04-27-kebab-final-form-design.md