✨ Feature: Cross-Project Task Dependencies & Context Sharing

[vasconceloscezar]

Feature Request

Priority: Low (backlog)

Summary

Enable tasks to reference and depend on tasks from other projects, with ability to share context across task boundaries.

Motivation

• Complex features often span multiple projects
• Tasks need context from related work in other projects
• Dependencies across projects currently invisible
• No way to express "Task Y depends on Task X from other project"

Proposed Solution

1. Task Dependencies

Task Y (Project A) depends on Task X (Project B)

Features:

• Cross-project dependency tracking
• Visual indicators for blocked/blocking tasks
• Dependency graph view
• Notifications when dependencies complete

2. Context Sharing

Task Z needs context from Task X, Y

Features:

• Reference other tasks in description/comments
• Auto-link task mentions (#project/task-id)
• Pull conversation/code context from referenced tasks
• Show related tasks in sidebar

Example Use Cases

Use Case 1: API + Frontend

Frontend Task: "Implement user profile page"
├─ Depends on: API Task "Create /users/:id endpoint"
└─ References: Design Task "User profile mockups"

Use Case 2: Multi-Repo Feature

Integration Task: "Connect payment gateway"
├─ Depends on: Backend "Payment service API"
├─ Depends on: Frontend "Checkout UI component"
└─ References: Infra "Payment provider credentials"

Technical Considerations

Data Model:

• Add dependencies array to task schema
• Support both blocks and blocked_by relationships
• Store cross-project references with project_id + task_id

UI/UX:

• Dependency picker (search across projects)
• Dependency graph visualization
• Task reference autocomplete
• Blocked task indicators in kanban

Constraints:

• Prevent circular dependencies
• Handle deleted/archived referenced tasks
• Performance with large dependency graphs

Future Enhancements

• Dependency templates ("API → Frontend" pattern)
• Auto-create dependent tasks
• Gantt chart view for dependencies
• Critical path analysis
• Slack/notification integrations for dependency updates

Related Issues

• #242 (Macro Kanban View) - complementary feature