v0.12.0

• Agent Teams: group agents into named teams with team leads that do real management (Planning + Builders shipped in the new teams-dev template)
• Auto-scaling Builders: Epic Manager picks the right model per task, reuses idle workers, and adds Coders as workload grows — within capacity caps
• Parallel planning: add multiple Architects to the Planning team and the Brainstormer gathers independent framings before drafting the master plan
• Configure Teams at project creation: per-team provider-config allowlist, plus an autonomous-creation toggle to pause team-lead scaling
• Team management UI: dedicated /teams page, Chat sidebar grouping with quick add, Edit team modal (capacity + autonomous toggle), agent Clone/Restart/Delete
• MCP team tools: devchain_team, devchain_teams_list, devchain_teams_members_list, devchain_teams_create_agent, devchain_teams_delete_agent, devchain_teams_configs_list
• Project import preconfig dialog for team templates with sanitized provider-config selection
• Handlebars prompt engine with team variables; live updates for agent and team mutations across all chat clients