v0.31.1

Added

• Added /chain inline parallel groups with per-step metadata, group options, and tab completion. Thanks to loss-and-quick (@loss-and-quick) for #312.
• Added subagent profile commands and provider model catalog generation for quota and quality model profiles. Thanks to tencnivel (@tencnivel) for #333.

Fixed

• Discover pi-intercom installations created by --extension npm:pi-intercom under Pi's temporary npm extension cache. Thanks to loss-and-quick (@loss-and-quick) for #336.
• Made async subagent interrupt, steer, and stop requests portable across platforms that do not support Unix signals. Thanks to AeonDave (@AeonDave) for #332.
• Hardened profile commands by probing models without tools, rejecting unsafe profile/provider path tokens, and resolving short model IDs and thinking suffixes against the current registry.
• Limited inline /chain acceptance values to levels expressible in slash syntax and kept completion disabled inside shared -- tasks with literal parentheses.