Feature: Add issue relations support (blocking/blocked by)

[g-click-trade]

Issue co-written with dear assistant Claude Code 🤖

Feature Request

Add support for reading and managing issue relations (blocking, blocked by, related, duplicate).

Current Behavior

linearis issues read does not return relations, and there's no way to create/manage them via CLI.

Proposed Solution

Reading Relations

Include relations in issues read output:

{
  "identifier": "ENG-123",
  "relations": [
    {"type": "blocks", "issue": "ENG-124"},
    {"type": "blocked_by", "issue": "ENG-100"},
    {"type": "related", "issue": "ENG-200"}
  ]
}

Managing Relations

Option A: New subcommand

# Add relation
linearis issues relate ENG-123 --blocks ENG-124
linearis issues relate ENG-123 --blocked-by ENG-100
linearis issues relate ENG-123 --related ENG-200
linearis issues relate ENG-123 --duplicate-of ENG-50

# Remove relation
linearis issues unrelate ENG-123 --blocks ENG-124

Option B: Via update command

linearis issues update ENG-123 --blocks ENG-124
linearis issues update ENG-123 --blocked-by ENG-100

Linear API Reference

Uses issueRelationCreate mutation with IssueRelationType enum:

• blocks
• duplicate
• related

Use Case

Managing dependencies between issues programmatically, especially useful for automation and bulk operations.

[g-click-trade]

Workaround available: https://gist.github.com/g-click-trade/3d73f0492abd2e5c75baa863053867dc

# Get relations
python linearis_workarounds.py relation get ENG-123

# Add blocked_by
python linearis_workarounds.py relation add ENG-123 --blocked-by ENG-100

# Add blocks
python linearis_workarounds.py relation add ENG-123 --blocks ENG-200

# Add related
python linearis_workarounds.py relation add ENG-123 --related ENG-300

# Remove relation
python linearis_workarounds.py relation remove RELATION_UUID