[Bug] Claude adapter generates invalid hooks JSON from hooks.yaml

[Darwinium]

Description

When running an agent with the Claude adapter, gitagent run maps hooks/hooks.yaml to a temporary Claude Code hooks JSON file. The generated JSON has an invalid structure — the hooks array is missing inside each matcher entry.

Error

Settings Error

/private/var/folders/.../gitagent-hooks-26f81911.json
 └ hooks
   ├ PostToolUse
   │ └ 0
   │   └ hooks: Expected array, but received undefined
   └ PreToolUse
     └ 0
       └ hooks: Expected array, but received undefined

Expected

Claude Code expects this format:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "Edit|Write",
        "hooks": [
          { "type": "command", "command": "echo Done" }
        ]
      }
    ]
  }
}

Source hooks.yaml

hooks:
  on_session_start:
    - script: scripts/on-start.sh
      description: Initialize session context
      timeout: 10
      compliance: false
      fail_open: true
  on_error:
    - script: scripts/on-error.sh
      description: Handle errors and escalate if needed
      timeout: 10
      compliance: false
      fail_open: true

Steps to Reproduce

1. gitagent init --template full --dir ./my-agent
2. gitagent run -d ./my-agent

Workaround

Clear hooks: echo "hooks: {}" > hooks/hooks.yaml

Environment

• gitagent installed via npm install -g @open-gitagent/gitagent
• Adapter: claude
• OS: macOS