Fork-based ownership:
- Add forkedFromId, forkCount fields to Collection and Agent models
- Add fork-status API endpoints for collections and agents
- Add ForkButton and ForkedFromBadge UI components
- Update clone endpoints to set forkedFromId and increment forkCount
- Add COLLECTION_FORKED and AGENT_FORKED activity types
- Enforce owner-only access for MCP tool execution and agent chat
MCP fix:
- Fix parseToolName to handle non-scoped packages like firecrawl-aisdk
- Try both scoped (@scope/name) and literal (name-with-hyphens) interpretations
- Pass collection envVars to tool executor for API key support