v0.21.1

Bug Fixes

• Update tests for command refactoring and remove old coder commands
• Fix integration test to correctly validate plugin command loading behavior
• Fix e2e test with updated command prefix (opencode-coder/*)
• Add app.log mock method to integration test client

Refactoring

• Simplify all 5 commands to delegate to opencode-coder skill
• Commands now act as thin wrappers that load the skill
• Remove 500+ lines of duplicated instructions from commands
• Skill remains authoritative source with detailed procedures
• All 206 tests passing