Preset system: Add hook system for post-install automation #1850
Description
Summary
Port the hook system from extensions to presets, enabling post-install automation and preset composition.
Context
Extensions have a sophisticated hook system (extensions.py:1509-1884):
- Event-based hooks (
after_spec,after_tasks, etc.) - Conditional hook execution
- Config-based hook conditions
- Hook lifecycle management
Presets have no hook support.
Requirements
- Define relevant hook events for presets (e.g.,
after_install,after_resolve) - Port HookExecutor pattern to PresetManager
- Add hooks section to preset manifest
- Implement hook registration/execution lifecycle
Related
- Reverse parity: extensions → presets