Ecosystem cap-widen (owner directive 2026-07-22): core 0.x is managed
compatibly, so libs accept any 0.x — the shared <0.13 lock-step ceiling (which
core 0.13.0 crossed) no longer recurs on each core minor.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>