Feat: Trello integration

[AggManik]

Summary

Adds a full Trello integration with OAuth2 auth, schedule-based activity sync, and a comprehensive MCP toolset.

• OAuth2 via Atlassian (auth.atlassian.com) with read:trello, write:trello, delete:trello scopes
• Schedule sync every 5 minutes — polls all open boards for activity (card creates/moves/updates, comments, checklist completions, member changes, etc.) and surfaces them as CORE activity events
• 120+ MCP tools across all Trello resource types: boards, cards, lists, checklists, labels, members, organizations, notifications, actions, search, tokens, and webhooks

MCP Tools

Resource	Operations
Boards	get, create, update, delete, members, labels, lists, plugins, calendar/email keys
Cards	get, create, update, delete, attachments, comments, checklists, labels, members, stickers, votes, custom fields
Lists	get, create, update, archive, move, move-all-cards
Checklists	get, create, update, delete, items
Labels	get, create, update, delete
Members	get, boards, cards, notifications, organizations, board stars, saved searches
Organizations	get, create, update, delete, members, boards, plugins
Notifications	get, update, mark all read
Search	trello_search, trello_search_members
Webhooks	get, create, update, delete
Actions	get, update, delete, reactions

[AggManik]

atlassian stopped new oauth creation