Runs agy in headless mode with prompts tailored to project workflows.

Examples:

mix agy --mode plan path/to/implementation_plan.md --dry-run
mix agy --mode walkthrough path/to/walkthrough.md --timeout 10m
mix agy --mode commit-review path/to/walkthrough.md --skip-permissions
mix agy --mode plan path/to/implementation_plan.md --save-conversation release-review
mix agy --conversation-name release-review --mode walkthrough path/to/walkthrough.md
mix agy --conversation-name release-review --log-file auto --mode plan path/to/implementation_plan.md
mix agy --conversation-name release-review --watchdog-timeout 30m --mode plan path/to/implementation_plan.md

The task defaults to safe execution: it does not pass --dangerously-skip-permissions unless --skip-permissions is explicitly provided.